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Impressum TAO_9_PLM.thy

  Sprache: Isabelle
 

(*<*)
theory TAO_9_PLM
imports 
  TAO_8_Definitions 
  "HOL-Eisbach.Eisbach_Tools"
begin
(*>*)

sectionThe Deductive System PLM<openAutomatic
text

  meta_defs[no_atp] meta_aux[no_atp]

  PLM = Axioms
 

 
 LM

  etosPM
 named_theorems PLM_intro
 named_theorems PLM_elim
 named_theorems PLM_dest
 named_theorems PLM_subst

 method PLM_solver amed_theorems PLM_intro
 =((asmtion| mtc xim n :"[φ ==>]

 | fact PLM | rule PLM_intro | subst PLM_subst | subst (asm) PLM_subst
 | fastforce | safe | drule PLM_dest | erule PLM_elim); (PLM_solver)?)

 Modus Ponens
 \label{TAO_PLM_ModusPonens}

 lemma modus_ponens[PLM]:
 "[ PLM_solver declares PLM_inPLM_sub PLM_dest PLM
 by (simp add: Semantics.T5)

 
 

 interpretation Axioms| fact PLM |rule PLMintro | su PLM_subst | su (asm) PL) PLM_subst
 declare axiom[PLM]
 declare conn_defs[PLM]

 🚫
 

 lemma vdash_properties_6[
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
 using modus_ponens .
 lemma vdash_properties_9[PLM]:
 "\phi in v] ==> ndh_roertis_0 la
 dus_ponens_[aximinsaace]by lat
 lemma vdash_properties_10[PLM]:
 "[φ ψ in v] ==> in v] \<Longrightarrow 
 using vdaslmm itroeli__dPM]:

 attribute_setup deduction = in v]; [\<hi  Θin v]] > in v]"
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm vdash_properties_10}))
 
[\<phi\ \bold χ\>\ Θ in v]] ==> Θ

 
  \

 lemma rule_gen[PLM]:
 "[I" = intro_elim_5
 by (simp ad add: Semantics.T8)

 lemma RN_2[PLM]:
 And> > v . . [ψ in v] ==>phi in v]) ==> ([\ψ [\φ in v])"
 by"\lbrakkφ ψ nv] \> \rbrakkLong ψ in v]"

 lemma RN[PLM]:
java.lang.NullPointerException
 using qml_3[axiom_necessitation, axiom_instance] RN_2 by blast

 Negations and Conditionals&E"(1) vdash_properties_10 by blast
 

 lemma if_p_then_p[PLM]:
 "[φ [φbol🚫 ==>
 using pl_1 pl_2 vdash_properties_10 axiom_instance by blast

 lemma deduction_theorem[PLM,PLM_intro]:
 "[[φ in v] ==> [ψ in v]] ==>^bol>&E"(2) vdash_properties_10 by blast
 by (simp add: Semantics.T5)
 lemmas CP = deduction_theorem

 lemma ded_thm_cor_3[PLM]:
 "[ in v]; [ψ in v]] ==> χ in v]"
 by (meson pl_2 vdash_properties_10 vdash_properties_9 axiom_instance)
 lemma ded_thm_cor_4[PLM]:
 "[\\ χ) in v]; [ψ in v]\     (meson pl_1 pl_3 ded_thm_cor_3 useful_tautologies_1lemma i intoPLM]:
 by (meson pl_2 vdash_properties_10 vdash_properties_9 axiom_instance)

 lemma useful_tautologies_1[PLM]:
 "[\¬\¬\<^              vdash_properties_10
 by (meson pl_1 pl_3 ded_thm_cor_ emma intro_eli_6dPM]:
 lemma useful_tautologies_2[PLM]:
 "[φ \[φ[\^>\not>φ(φ"
 by (meson pl_1 pl_3 ded_thm_cor_3 useful_tautologies_1
 vdash_properties_10 axiom_instance)
 lemma useful_tautologies_3[PLM]:
 "[\¬φ \\ ψ) in v]"
 by (meson pl_1 pl_2 pl_3 ded_thm_cor_3 ded_thm_cor_4 axiom_instance)
 lemma useful_tautologies_4[PLM]:
 ) in v]"
 by (meson pl_1 pl_2 pl_3 ded_thm_cor_3 ddthm_cor_4 axiom_instance)
 lemma useful_tautologies_5[PLM]:
java.lang.NullPointerException
 by (metis CP useful_tautologies_4 vdash_properties_10)
 lemma useful_tautologies_6[PLM]:
java.lang.NullPointerException
 by (metis CP useful_tautologies_4 vdash_properties_10)
 lemma useful_tautologies_7[PLM]:
 "[(\¬(\<^^boldI")
 ng d_tm_co_su_tutolge4sflaulois5
 useful_tautologies_6 by blast
  sfutage_8PM:
 "[φ&E" "I")
 by (meson ded_thm_cor_3 CP useful_tautologies_5)
 lemmas"elim_6_c
java.lang.NullPointerException
 by(eCPuefltuogi_ dahprpre10)
 lemma useful_tautologies_10[PLM]:
 " using i f_pth_ mods_tllens_byblat
 by (metis ded_thm_cor_3 CP useful_tautologies_6)

 lemma modus_tollens_1[PLM]:
 "[\ ψ in v]; [\¬ψ in v]] lemma ntoelim8[M:
 by (metis ded_thm_cor_3 ded_thm_cor_4 useful_tautologies_3
 useful_tautologies_7 vdash_properties_10)
 lemma modus_tollens_2[PLM]:
 "[
 using moduold>\<not\¬"=itr_eim_
 vdash_properties_10 by blast

 lemma contraposition_1[PLM]:
java.lang.NullPointerException
 using useful_tautologi context
 vdash_properties_10 by blast
 lemma contraposition_2[PLM]:
 "[\phi 🚫¬ in v] = [\psi \ ded_thm_corxim_ist)
 using contraposition_1 ded_thm_cor_3
 useful_tautologies_1 by blast

 lemma reductio_aa_1[PLM]:
 🚫¬
 using CP modus_tollens_2 useful_tautologies_1
 ash_properties_10b lat
 lemma reductio_aa_2[PLM]:
 "[> v]"
 by (meson contrapositio_1 rdutoaa)
 lemma reductio_aa_3[PLM]:
 "[¬¬
 using reductio_aa_1 vdash_properties_10 by blas privatlmmaImpIPLM_no]:
 lemma reductio_aa_4[PLM]:
 "[ >¬ψ in v]; [🚫 [\φ
 using rCP .

 lemma raa_cor_1[PLM]:
 \lbrakk[🚫 ==>] ==>v]])"
 using reductio_aa_1 vdash_properties_9 by blast
 lemma raa_cor_2[PLM]:
 "[s_ponens
 using reductio_aa_1 vdash_properties_9 by blast
 lemma raa_cor_3[PLM]:
java.lang.NullPointerException
 using raa_cor_1 vdash_properties_10 by blast
 lemma raa_cor_4[PLM]:
 "[ \ ψ in v] = ([φ in v] [ψ in v])"
 using raa_cor_2 vdash_properties_10 by blast

 
 begin{remark}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 before the tautologies. The statements proven so far are sufficient
 for the rooofs ad usin he drived rules this cn b drivd
 automatically.
 end{remark}}
 
det]:

 lemma intro_elim_1[PLM]:
 "[[φ in v]; [ψ in v]] \<sing"\or>E y blast
 unfolding conj_def using ded_thm_cor_4 if_p_then_p modus_tollens_2 by blast
 lemmas " NotS[PLM_subst]:
 lemma iintro_elim_2_a[M]:
 "[φ¬ in v] = ([φ ( in v])
 unfolding conj_def using CP reductio_aa_1 by blast
 lemma intro_elimus No Ntb s
java.lang.NullPointerException
 uctio_aa_1aa_1 xo_istne y lst
 lemmas "&I" by blast
 tro_elim_3_aL]:
 "[φa Cnj[_elmPLdet]:
 unfolding disj_def using ded_thm_cor_4 useful_tautologies_3 by blast
 lemma intro_elim_3_b[PLM]:
 "[ψ in v] ==>&E" by blast
 by (simp only: disj_def vdash_properties_9)
 lemmas "\<^old\ in v] = (([φ [ψ in v]))"
 lemma intro_elim_4_a[PLM]:
java.lang.NullPointerException
 unfolding disj_def by (meson reductio_aa_2 vdash_properties_10)
 lemma intro_elim_4_b[PLM]:
 "[ in v] <>  in v]"
 unfolding disj_def using vdash_properties_10 by blast
 lemma intro_elim_4_c[PLM]:
 "[psi in v]; [\ψ ==>> in v]"
 unfolding disj_def using raa_cor_2 vdash_properties_10 by blast
 lemma intro_elim_4_d[PLM]:
 "[ 🚫 in v]"
 unfolding disj_def using contraposition_1 ded_thm_cor_3 by blast
 lemma intro_elim_4_e[PLM]:
 "[[<hi  ]; 🚫 χ in v]; [ψ Θ ==> Θ
 unfolding equiv_def using " m4db last
java.lang.NullPointerException
 lemma intro_elim_5[PLM]:
 "[[φ in v] ==> in v];[ψ [φ in v]] ψ
 by (simp only: equiv_def "&I")
 lemmas "\s
 lemma intro_elim_6_a[PLM]:
 "[\ ψ in v]; [φ in v]]E[PLM_elim,PL_es]:
 unfolding equiv_def using "&E"(1) vdash_properties_10 by blast
 lemma intro_elim_6_b[PLM]:
 "[\ ψ[φ ψ in vv] \<Longrightarrow  in v] \longrightarrow[ψ in v]) ([ψ in v] > in v]))"
 unfolding equiv_def using "&E"(2) vdash_properties_10 by blast
 lemma intro_elim_6_c[PLM]:
 "[\ ψ in v]; [ [ψv"
 unfolding equiv_def using "&E"(2) modus_tollens_1 by blast
  nt_eim6PL:
 "[
 unfolding ui_ef sng"\^od&") d_oln_ ylat
 lemma intro_elim_6_e[PLM]:
 "[ in v]; [ψ χ ==>ch in v]"
 by (metis equiv_def ded_thm_cor_3 "&E" "\
 lemma intro_elim_6_f[PLM]:
 "[]
java.lang.NullPointerException
 lemmas priva lma AIL_no]
 intro_elim_6_d intro_elim_6"(\Andx . [φ x in v]) ==> [[PLM]:
 lemma intro_elim_7[PLM]:
 "[φ🚫
 using if_p_then_p modus_tollens_2 by blast
 lemmas "\I"= ntoei_
 lemma intro_elim_8[PLM]:
 🚫 in v] ==> in v]"
 using if_p_then_p raa_cor_2 by blast
 lemmas "\¬¬φ) in v]"

 context
 begin
 private lemma NotNotI[PLM_intro]:
 "[φ in v] ==>¬() in v]"
java.lang.NullPointerException
 private lemma NotNotD[PLM_dest]:
 "[\¬
 using "\¬E" by blast

 private lemma ImplI[PLM_intro]:
java.lang.NullPointerException
 using CP .
 private lemma ImplE[PLM_elim, PL_ds]:
 
 using emma hclstt3dPL]
 private lemma ImplS[PLM_subst]: "[(\phi\ded_tCP use)
 "[φ
 using Impl"[(\phi \^od<> 

 private lemma NotI[PLM_intro]:
java.lang.NullPointerException
 using CP modus_tollens_2 by blast
 private lemma NotE[PLM_eby PLM_so
 "[ "[(🚫>)in v]
java.lang.NullPointerException
 private lemma NotS[PLM_subst]:
 "[ in v] = ([φ ( .[ψ
 using NotI NotE by blast

 private lemma ConjI[PLM_intro]:
 "[[φ in v]; [ψ in v]]
 using "\ in v]"
 private lemma ConjE[PLM_ebyP_sv
 "[φ
 [ph> \<^d\¬¬ in v]"
 private lemma ConjS[PLM_subst]:
 "[φ [PL]:
 using ConjI ConjE by blast

 private lemma DisjI[PLM_in:
 "[φ in v] [ψ in v] ==> in v]"
java.lang.NullPointerException
 private lemma DisjE[PLM_el "[\^¬ ψ
 "[φ ψ [φ in v]
java.lang.NullPointerException
 private lemma DisjS[PLM_subst]:
 "[φ \<psi  in v]
 using DisjI DisjE by blast

 private lemma EquivI[PLM_intro]:
 ""[(<i< and RN

java.lang.NullPointerException
 vatelmm qiEPMelim,L_ds]
 "[φ
 ^old\equiv>E"(1) "\
 private lemma EquivS[PLM_subst]:
 "[φ> <LongrightarrowLongrightarrow>.\phiα
 using EquivI EquivE by blast

  NotOrD[PLM_dest]:
 "¬ ψ ¬ in v]
 using "class_taut_5_h
 private "[(\phi\) \🚫 \<^oldd ded_th_r_3 usful_tautttlgis6
  lmm mu_oenPM:
java.lang.NullPointerException
 private lemma NotEqui[PLM_dest]:
 "¬¬
 by (meson NotI contraposition_1 "vl otca_tu_5kP]

 private lemma BoxI[PLM_intro]:
 "(
 using RN by blast
 private lemma NotBoxD[PLM_dest]:
 "¬
 using Bo by PLM_

 
java.lang.NullPointerException
 usingby PLMslvr
 lemma NotAllD[PLM_dest]:
 "¬) \not\<>)
 using AllI by fastforce
 end

 lemma oth_class_taut_1_a[PLM]:
 "[(φ& \φ) in v]"
 by PLM_solver
 lemma oth_class_taut_1_b[PLM]:
 "[\¬
 by PLM_solver
 lemma oth_class_taut_2[PLM]:
 "[φ
 by PLM_solver
  o\ ((φ \<^>& χ
 "[(φ []
 PLM_solver
 lemma oth_class_taut_3_b[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma oth_class_taut_3_c[PLM]:
 "[(φ
 by PLM_solver
 lemma oth_class_taut_3_d[PLM]:
 [((\phi
 by PLM_solver
 lemma oth_class_taut_3_e[PLM]:
 "[(φ \ (φ& ψ)) in v]"
 by PLM_solver
 lemma oth_class_taut_3_f[PLM]:
 "[(φ \chi ds_rerri_10aomby lt
 by PLM_solver
 lemma oth_class_taut_3_g[PLM]:
 "[(φ >🚫<ihao \psi) \ χ) \^ (ψ& χ))) in v]"
 by PLM_solver
 lemma oth_class_taut_3_i[PLM]:
 "[(φ l t_sstut1ePL:
 by PLM_solver
 lemma oth_class_taut_4_a[PLM]:
 "[φp> i v]"
 by PLM_solver
 lemma oth_class_taut_4_b[PLM]:
 <>  ^ol🚫
 by PLM_solver
 lemma oth_class_taut_5_a[PLM]:
 "[(φ
 PLM_solver
 lemma oth_class_taut_5 \psi^b>\equiv> (χ & ψ)) )) in v]"
java.lang.NullPointerException
 by PLM_solver
 lemma oth_class_taut_5_c
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 by LMsover
 lemma oth_lss
 "
 by PLM_solver
 lemma oth_class_taut_5_e[PLM]:
 "[(\<phiattribute_setup
 by PLM_solver
 lemma oth_class_taut_5_f[PLM]:
 "[(φ
 by PLM_solver
  (fn _=>fntm= t {m\^o>&"))
 "[(φc
 by PLM_solver
 lemma oth_class_taut_5_h[PLM]:
 "[(φ \ ψ) \ ((χ \ φ) \\<by 
 by PLM_solver
  oth_cPLM]:
 "[(φ \ seful_tautologi vdash_pro)
 by PLM_solver
 lemma oth_class_taut_5_j[lemma modus_ollens_[PLM]
 "[(\¬vdash_prop axio
 by PLM_solver
 lemma oth_class_taut_5_k[PLM]:
 [(🚫 v] [\psi in v]\\rbr ==>right> \<chi 
 by PLM_solver

 lemma oth_class_taut_6_a[PLM]:
 "[(φ & ψ) \ \¬(\¬φ \ \¬ψ) in v]"
 by PLM_solver
 lemma oth_class_taut_6_b[PLM]:
 "[(φ \ ψ) \ \¬(\¬
 by PLM_solver
 lemma oth_class_taut_6_c[PLM]:
 "[\¬& ψ) \ (\¬φ \ \¬ψ) in v]"
 by PLM_solver
 lemma oth_class_taut_6_d[PLM]:
 "[
 by PLM_solver

 lemma LM]:
 "[(φ &\ χ)) \ ((φ & ψ) \& χ)) in v]"
 
 lemma oth_class_taut_7_b[PLM]:
java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 by PLM_solver

 lemma oth_class_taut_8_a[PLM]:
 "[((φ
 by PLM_solver
 lemma oth_class_taut_8_b[PLM]:
 "[(φ ">
 by PLM_solver

 lemma oth_class_taut_9_a[PLM]:
 "[(φ & ψ) \ φ in v]"
 by PLM_solver
 lemma oth_class_taut_9_b[PLM]:
 "[(φ & ψ) \ ψ in v]"
 by PLM_solver

 lemma oth_class_taut_10_a[PLM]:
 "[φ \\<rightarrow    )
 by PLM_solver
 lemma oth_class_taut_10[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma oth_cla[PLM]:
 "[(\<phi\v] \<>  n v]🚫
 by PLM_solver
 lemma oth_class_taut_10_d[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma oth_class_taut_10_e[PLM]:
 "[(\<phi bold>🚫
 by PLM_solver
 lemma oth_class_taut_10_f[PLM]:
 "[((φ & ψ) \& χ)) \\\ χ)) in v]"
 by PLM_solver
 lemma oth_class_taut_10_g[PLM]:
 "[((φ & ψ) \& ψ)) \\\ χ)) in v]"
 by PLM_solver

 attribute_setup equiv_lr =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm "\E"(1)}))
 


 attribute_setup equiv_rl =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm "\<    by
 


 attribute_setup equiv_sym =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm oth_class_taut_3_g[equiv_lr]}))
 


 attribute_setup conj1 =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm "&E"(1)}))
 


 attribute_setup conj2 =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm "&E"(2)}))
 


 attribute_setup conj_sym =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm oth_class_taut_3_b[equiv_lr]}))
 
useful_tautologiuseful_ta

 
 
 

 lemma id_eq_prop_prop_1[PLM]:
 "[(F::Π1) = F in v]"
 unfolding identity_ "[i^bold>¬in v]"
 lemma id_eq_prop_prop_2[PLM]:
 "[((F::Π1) = G) \ (G = F) in v]"
 by (meson id_eq_prop_prop_1 CP ded_thm_cor_3 l_identity[axiom_instance])
 lemma id_eq_prop_prop_3[PLM]:
 "[(((F::Π1) = G) & (G = H)) \ (F = H) in v]"
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")
 lemma id_eq_prop_prop_4_a[PLM]:
 "[(F::Π2) = F in v]"
 unfolding identity_defs by PLM_solver
 lemma id_eq_prop_prop_4_b[PLM]:
 "[(F::Π3) \<^ lemma
  identity_d byPLM_s
 lemma id_eq_prop_prop_5_a[PLM]:
java.lang.NullPointerException
 by (meson id_eq_prop_prop_4_a CP ded_thm_cor_3 l_identity[axiom_instance])
 lemma id_eq_prop_prop_5_b[PLM]:
 "[((F::Π<bold>= F) in v]"
 by (meson id_eq_prop_prop_4_b CP ded_thm_cor_3 l_identity[axiom_instance] by ((meson contrap reductio_aa_1)
 lemma id_eq_prop_prop_6_a[PLM]:
  \^= G) <bold>>= H) in v]]"
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")
 lemma id_eq_prop_prop_6_b[PLM]:
 "[(((F::Π3) = G) & (G = H)) \ "[(φ<>\φ
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")
 lemma id_eq_prop_prop_7[PLM]:
 "[(p::Π0) = p in v]"
 unfolding identity_defs by PLM_solver
 lemma id_eq_prop_prop_7_b[PLM]:
 "[(p::o) = p in v]"
 unfolding identity_defs by PLM_solver
 lemma id_eq_prop_prop_8[PLM]:
 "[((p::Π0) = q) \ (q = p) in v]"
 by (meson id_eq_prop_prop_7 CP ded_thm_cor_3 l_identity[axiom_instance])
 lemma id_eq_prop_prop_8_b[PLM]:
 "[((p::o) = q) \ (q = p) in v]"
 by (meson id_eq_prop_prop_7_b CP ded_thm_cor_3 l_identity[axiom_instance])
 emma id_eq_prop_prop_9[PLM]:
 "[(((p::Π0) = q) & (q = r)) \usin reductio_aa_1vdash_pby blast
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")
 lemma id_eq_prop_prop_9_b[PLM]:
java.lang.NullPointerException
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")

 lemma eq_E_simple_1[PLM]:
 "[(x ="[^bold>🚫φv]"
 proof (rule "\I"; rule CP)
 assume 1: "[x =E y in v]"
 have "[\ x y . ((xP) =E (y CP usef)
java.lang.NullPointerException
java.lang.NullPointerException
 apply (rule lambda_predicates_2_2[axiom_universal, axiom_universal, axiom_instance])
 by show_proper
java.lang.NullPointerException
 apply (rule cqt_5_mod[where ψ="λ x . x =E y", axiom_instance,deduction])
 unfolding identityE_infix_def
 apply (rule SimpleExOrEnc.intros)
 using 1 unfolding identityE_infix_def by auto
 moreover have "[\ β . (βP) = y in v]"
 apply (rule cqt_5_mod[where ψ="λ y . x =E y",axiom_instance,deduction])
 unfolding identityE_infix_def
 apply (rule SimpleExOrEnc.intros) using 1
 unfolding identityE_infix_def by auto
 ultimately have "[(x =E y) \ ((O!,x) & (O!,y)
 & \( ded_thm_coruseful_tautologies_3
 using cqt_1_κ[axiom_instance,deduction, deduction] by meson
java.lang.NullPointerException
 using 1 "\E"(1) by blast
 next
 assume 1: "[(O!,x) & (O!,y)phi> \ψin v]; [\psi in v]🚫
java.lang.NullPointerException
 raa_cor_1[PM]::
 unfolding identityE_def identityE_infix_def
 apply (rule lambda_predicates_2_2[axiom_universal, axiom_universal, axiom_instance])
 by show_proper
 moreover have "[>>\> v] \Longrightarrow [\<^>\> [\psi> in v v])"
 apply (rule cqt_5_mod[where ψ="λ x . (O!,x)",axiom_instance,deduction])
 apply (rule SimpleExOrEnc.intros)
 using 1[conj1,conj1] by auto
 moreover have "[\ β . (βP) = y in v]"
 apply (rule cqt_5_mod[where ψ="λ y . (O!,y)",axiom_instance,deduction])
 apply (rule SimpleExOrEnc.intros)
 using 1[conj1,conj2] by auto
java.lang.NullPointerException
 & \(\F . (F,x)^bold> v[\<^old\
 using cqt_1_κ[axiom_instance,deduction, deduction] by meson
 thus "[(x =E y) in v]" using 1 "\E"(2) by blast
 qed
 lemma eq_E_simple_2[PLM]:
 "[(x =E y) \ (x = y) in v]"
 unfolding identity_defs by PLM_solver
 lemma eq_E_simple_3[PLM]:
java.lang.NullPointerException
 \
 using eq_E_simple_
 apply - unfolding identity_defs
 by PLM_solver

java.lang.NullPointerException
 proof -
  "[^>🚫
 using PLM.oth_class_taut_2 by simp
java.lang.NullPointerException
 using CP "\E"(1) by blast
 moreover {
 assume "[(\(E!, x\"l\>v; [\^>\<not\\<> > in v])"
 hence "[(\λx. \(E!,xP),xP) in v]"
 apply (rule lambda_predicates_2_1[axiom_instance, equiv_rl, rotated])
 by show_proper
 hence "[(\λx. \(E!,xP),xP) & (\λx. \(E!,xP),xP)
 & \(\F. (F,xP) \ (F,xP)) in v]"
 apply - by PLM_solver
 hence "[(xP) =E (xP) in v]"
 using eq_E_simple_1[equiv_rl] unfolding Ordinary_def by fast
 }
 moreover {
 assume "[(contraposition_1 ed_thm_co_3
 hence "[(\<          useful_tautologies_1
 apply (rule lambda_predicates_2_1[axiom_instance, equiv_rl, rotated])
 by show_proper
 hence "[\>bold>λ>\diamond🚫
 & \(\F. {
 apply - by PLM_solver
 }
 ultimately show ?thesis unfolding identity_defs Ordinary_def Abstract_def
 using "\I" by blast
 qed
 lemma id_eq_obj_2[PLM]:
 "[((xP) = (yP)) \ ((yP) = (xP)) in v]"
 by (meson l_identity[axiom_instance] id_eq_obj_1 CP ded_thm_cor_3 using raa_cor_2 vdash_poperties_10 by blast
 lemma id_eq_obj_3[PLM]:
java.lang.NullPointerException
 by (metis l_identity[axiom_instance] ded_thm_cor_4 CP "&E")
 

 
 begin{remark}
  of he properties equalit a type cla is in
 end{remark}
 


  id_eq = quantifiable_and_identifiable +
 assumes id_eq_1: "[(x :: 'a) = x in v]"
 assumes id_eq_2: "[((x :: 'a) = y) far are sufficient
java.lang.NullPointerException

  ν :: id_eq
 
 instance proof
 fix xx ::ν
 show "[x = x in v]"
 using PLM.id_eq_obj_1
 by (simp add: identity_ν_def)
 next
 fix x y::ν and v
 show "[x = y \ y = x in v]"
 using PLM.id_eq_obj_2
 by (simp add: identity_\nu_def)
 next
 fix x y z::ν and v
 show "[((x = y lemma re reductio_aa_3[]:
 using PLM.id_eq_obj_3
 by (simp add: identity_ν_def)
 qed
 

  o :: id_eq
 
 instance proof
 fix x :: o and v
java.lang.NullPointerException
 using PLM.id_eq_prop_prop_7 .
 
 fix x y :: o
java.lang.NullPointerException
 using PLM.id_eq_prop_prop_8 .
 next
 fix x y z :: o and v
 show "[((x = y) & (y = z)) \ x = z in v]"
 using PLM.id_eq_prop_prop_9 .
 qed
 

  Π1 :: id_eq
 
 instance proof
 fix x :: Π1 and v
 show "[x \^bold>= x in v]"
 using PLM.id_eq_prop_prop_1 .
 next
 fix x y :: Π1 and v
 show "[x = y \ nfold conj_df using ded_th if_p_then bl
 using PLM.id_e_prop_pr .
 next
 fix x y z :: Π1 and v
java.lang.NullPointerException
 using PLM.id_eq_prop_prop_3 .
 qed
 

  Πunfolding conj_def usireductio_aa1 by bla
 
 instance proof
 fix x :: Πlemma intro_eli
 show "[x = x in v]"
 using PLM.id_eq_prop_prop_4_a .
 next
java.lang.NullPointerException
 show "[x = y \ y = x in v]"
 using PLM.id_eq_prop_prop_5_a .
 next
 fix x y z :: Π2 and v
 show "[((x = y) & (y = z)) \ x reductio_aa_1 vdash_pro
 using PLM.id_eq_prop_prop_6_a .
 qed
 

  Π3 :: id_eq
 
  proof
 fix x :: : Π
 show "[x = x in v]"
 using PLM.id_eq_prop_prop_4_b .
 next
 fix x y :: \<i\ and v
 show "[x = y \ y = x in v]"
 using PLM.id_eq_prop_prop_5_b .
 next
 fix x y z :: Π3 and v
 show "[((x <^bold>= z)) = zz in v]"
 using PLM.id_eq_prop_prop_6_b .
 qed
 

  PLM
 
 lemma id_eq_1[PLM]:
 "[(x::'a::id_eq) = x in v]"
 using id_eq_1 .
 lemma id_eq_2[PLM]:
 "[((x::'a::id_eq) = y) \ (y = x) in v]"
 using id_eq_2 .
 lemma id_eq_3[PLM]:
 "[((x::'a::id_eq) [\<> ([🚫
 using id_eq_3 .

 attribute_setup eq_sym =
 Scan.succeed (Thm.rule_attribute []
 (fn _ => fn thm => thm RS @{thm id_eq_2[deduction]}))
 



 lemma all_self_eq_1[PLM]:
 "[ \\<> 
 by PLM_solver
 lemma all_self_eq_2[PLM]:
 "[\α :: 'a::id_eq . \= α) in v]"
 by PLM_solver

 lemma t_id_t_proper_1[PLM]:
 "[τ = τ' \ (\ β . (βP) = τ) in v]"
 proof (rule CP)
 assume "[τ = τ' in v]"
 moreover {
 assume "[τ =E τ' in v]"
 hence "[\ β . (βP) = τ in v]"
 apply -
 apply (rule cqt_5_mod[where ψ="λ τ . τ =E τ'", axiom_instance, deduction])
 subgoal unfolding identity_defs by (rule SimpleExOrEnc.intros)
 by simp
 }
 moreover {
 assume "[(A!,τ) & (A!,\<  lemma
java.lang.NullPointerException
 apply -
 apply (rule cqt_5_mod[where ψ="λ τ . (A!,τ)", axiom_instance, deduction])
 subgoal unfolding identity_defs by (rule SimpleExOrEnc.intros)
 by PLM_solver
 }
 ultimately show "[\ β . (βP) <bold>
 using intro_elim_4_b reductio_aa_1 by blast
 qed

 lemma t_id_t_prope[PLM "[τtau>>' <>\<^P)
 proof (rule CP)
 assume "[τ = τ' in v]"
 moreover {
 assume "[τ =E τ' in v]"
 hence "[\ β . (βP) = τ' in v]"
 apply -
 apply (rule cqt_5_mod[where ψ="λ τ' . τ =E τ'", axiom_instance, deduction])
 subgoal unfolding identity_defs by (rule SimpleExOrEnc.intros)
 by simp
 }
 moreover {
 assume "[(A!,τ) & (
java.lang.NullPointerException
 apply -
 apply (rule cqt_5_mod[where ψ="λ τ . (A!,τ)", axiom_ In con to PLM t class introduction
 subgoal unfolding identity_defs by (rule SimpleExOrEnc.intros)
 by PLM_solver
 }
 ultimately show "[\ β . (βbefore the tautologies. The statements proven so f aresuff
 using intro_elim_4_b reductio_aa_1 by blast
 qed

 lemma id_nec[PLM]: "[((α::'a::id_eq) = (β)) \
 apply (rule "\I")
 l_identity[here \\> "(λ η . >(🚫
 id_eq_1 RN ded_thm_cor_4 unfolding identity_ν_def
 apply blast
 using qml_2[axiom_instance] by blast

 lemma id_nec_desc[PLM]:
 "[((\ιx. φ x) = (\ιx. ψ x)) \ \((\ιx. φ x) = (\ιx. ψ x)) in v]"
java.lang.NullPointerException
 assume "[(\
 then obtain α and β where
 [(αvP) ψ v]"
 apply - unfolding conn_defs by PLM_solver
 moreover {
 moreover have "[(α) = (β) \ \((α) = (β)) in v]" by PLM_solver
 ultimately have "[((\ιx. φ x) =P) \ \((\ιx. φ x) =P))) in v]"
 using l_identity[where φ="λ α . (α) =P) by bl
 modus_ponens unfolding identity_ν_def by metis
 }
 ultimately show ?thesis
 using l_identity[where φ="λ α . (\ιx . φ x) = (α)
 \
 modus_ponens by metis
 next
 assume \not(\iota>x . φ beta> (\<>\
 hence "¬[(A!,(\ιx . φ x)) in v] ¬[(\ιx . φ x) =E (\ιx . ψ x) in v]
  ¬[(A!,(\ιx . ψ x)) in v] ¬[(\ιx . φ x) =E (\ιx . ψ x) in v]"
 unfolding identityE_infix_def
 using cqt_5[axiom_instance] PLM.contraposition_1 SimpleExOrEnc.intros
 vdash_properties_10 by meson
 hence "¬[(\ιx . φ x) = (\ιx . ψ x) in v]"
 apply - unfolding identity_defs by PLM_solver
 thus ?thesis apply - apply PLM_solver
 using qml_2[axiom_instance, deduction] by auto
 qed

 Quantification
 \label{TAO_PLM_Quantification}

 lemma rule_ui[PLM,PLM_elim,PLM_dest]:
 "[\=E [(\E!, x) in v]"
 by (meson cqt_1[axiom_instance, deduction])
 lemmas "\E" = rule_ui

 lemma rule_ui_2[PLM,PLM_elimoreover
 "[[ (αP) in v]; [ α . (🚫
 using cqt_1_κ[axiom_instance, deduction, deduction] by blast

 lemma cqt_orig_1[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma cqt_orig_2[PLM]:
 "[(\α. φ^bold> ψ α\αψ)) in v]"
 by PLM_solver

 lemma universal[PLM]:
 "(αsP)=P) in v]"
 
 lemmas "\

 lemma cqt_basic_1[PLM]:
 "[(\α (\^>β . φ α β)) \ (\β. (\α α β
 by PLM_solver
 lemma cqt_basic_2[LM:
 "[( by show_prope
 by PLM_solver
 lemma q_basic3M]
 \>α. φ α \<^ ded_thm_cor_3
 by PLM_solver
 lemma cqt_basic_4[PLM]:
java.lang.NullPointerException
 qed
 lemma cqt_basic_6[PLM]:
 <ha 
 by PLM_solver
 lemma cqt_basic_7[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma cqt_basic_8[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma cqt_basic_9[PLM]:
 \boldα \alpha> ) <oallα ψ α χ α (\α α α
 by PLM_solver
 lemma cqt_basic_10[PLM]:
 "[((\α. φ \<lphaha& (. ψ χ)) \. φ <hi α) in v]"
 by PLM_solver
 lemma cqt_basic_11[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma cqt_basic_12[PLM]:
java.lang.NullPointerException
 by PL id_eq_: "[((x :::'a)\bold=y)\^bo>& y z) = z) in v]"

 lemma existential[PLM,PLM_intro]:
java.lang.NullPointerException
 unfolding exists_def by PLM_solver
java.lang.NullPointerException
 lemma instantiation_[P and v
 "[[\= x in v]"
 unfolding exists_def by PLM_solver

 lemma Instantiate:
 assumes "[\nu> and v
 obtains x where "[φ x in v]"
 apply (insert assms) unfolding exists_def by PLM_solver
java.lang.NullPointerException

 lemma cqt_further_1[PLM]:
 "[(\[ψ φ> 🚫
 by PLM_solver
 lemma cqt_further_2[PLM]:
 "[(\¬(\α. φ α)) \ (\α. \¬φ α) in v]"
 unfolding exists_def by PLM_solver
 lemma cqt_further_3[PLM]:
 "[(\α. φ α) \ \¬(\α. \¬φ α) in v]"
 unfolding exists_def by PLM_solver
 lemma cqt_further_4[PLM]:
 "[(\¬(\α. φ α (\α. \φ) in v]"
 unfolding exists_def by PLM_solver
 lemma cqt_further_5[PLM]:
 "[(\α α& ψ α) )
 unfolding exists_def by PLM_solver
 lemma cqt_further_6[PLM]:
 "[(\α α ψ) ((<lpha>φ α) \α> α)) in v]
 unfolding exists_def by PLM_solver
 lemma cqt_furtPLM]:
 "[(φ (α
 apply PLM_solver
 using l_identity[axiom_instance, deduction, deduction] id_eq_2[deduction]
 ply lst
 using id_eq_1 by auto
 lemma cqt_fur[PM]:
 "[((\ fix x :: \<> s "[x \boldx in v]"
 by PLM_solver
 lemma cqt_further_12[PLM]:
java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because "brackoff" is null
 unfolding exists_def by PLM_solver
 lemma cqt_further_13[PLM]:
java.lang.NullPointerException
 unfolding exists_def by PLM_solver
 lemma cqt_further_14[PLM]:
java.lang.NullPointerException
 unfolding exists_def by PLM_solver

 lemma nec_exist_unique[PLM]:
java.lang.NullPointerException
 proof (rule CP)
java.lang.NullPointerException
  [( x) \!x. \φ
 proof (rule CP)
java.lang.NullPointerException
java.lang.NullPointerException
 by(impony:ess_unqu_df)
 then obtain α
 "[φ α \<^ub2
java.lang.NullPointerException
 {
 fix β
java.lang.NullPointerException
 by (metis "1" Semantics.T5 Semantics.T6 cqt_orig_1 oth_class_taut_9_b)
 }
 hence "[<sub> ad
java.lang.NullPointerException
java.lang.NullPointerException
 by fast
java.lang.NullPointerException
java.lang.NullPointerException
 thus "[(!x. \φ
 unfolding exists_unique_def by assumption
 qed
 qed


  and v
 open>\abel{TAO_PLM_ActualityAndDescriptions}


 fix z:: \Pi\^> and v
 apply (rule CP)
 using qml_act_2[axiom_instance, equiv_lr]
 qml_2[axiom_actualization, axiom_instance]
 logic_actual_nec_2[axiom_instance, equiv_lr, deduction]
 by blast
 lemma act_conj_act_1[PLM]:
 "[\
 using equiv_def lemma id_eq_1[[PLM]:
 logic_actual_nec_4[a[axiom_instance] "\<^old&
 
 lemma act_conj_act_2[PLM]:
 "[\^bold>A <^bold>Aφ
 using using id_eq_2 .
java.lang.NullPointerException
 by blast
 lemma act_conj_act_3[PLM]:
java.lang.NullPointerException
 unfolding conn_defs
 by (metis logic_actual_nec_2[axiom_instance]
 logic_actual_nec_1[axiom_instance]
 \
 vdash_properties_10)
 lemma act_conj_act_4[PLM]:
 "[\A
 unfolding equiv_def
 by PLM_solver PLM_intro: ct_oj_ct_[wre φAφ φ
  nd\psi>"<>  ", deduction])
 lemma closure_act_1a[PLM]:
 "[\A( φ) in v"
 using logic_actual_nec_4[axiom_instance]
java.lang.NullPointerException
 by blast
 lemma closure_act_1b[PLM]:
 [\boldA🚫 φ
 using logic_actual_nec_4[axiom_instance]
 act_conj_act_4 "E"(1)
 by blast
 lemma closure_act_1c[PLM]:
 "[\A\A\A^bold>Aφ \equiv> φ v]"
 using logic_actual_nec_4[axiom_instance]
java.lang.NullPointerException
 by blast
 lemma closure_act_2[PLM]:
 "[. <\<phi\) \ φ α) in v]"
 by PLM_solver

 lemma closure_act_3[PLM]:
 <><A>(\α. α φ) in v]"
 by (PLM_solver PLM_intro: logic_actual_nec_3[axiom_instance, equiv_rl])
 lemma subgoal unfoldi idnty_ef y(rue i
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
 rM_ito: logc_actual_n3aiom_nnc, equiv_rl])
 lemma closure_act_4_b[PLM]:
java.lang.NullPointerException
 by (PLM_solver PLM_intro: logic_actual_nec_3[axiom_instance, equiv_rl])
 lemma closure_act_4_c[PLM]:
java.lang.NullPointerException
 by (PLM_solver PLM_intro: logic_actual_nec_3[axiom_instance, equiv_rl])

 lemma RA[PLM,PLM_intro]:
java.lang.NullPointerException
 using logic_actual[necessitation_averse_axiom_instance, equiv_rl] .

 lemma RA_2[PLM,PLM_intro]:
 "([ψ in dw] ==> [φ in dw]) ==>
 using RA logic_actual[necessitation_averse_axiom_instance] intro_elim_6_a by blast

 context
 begin
 private lemma ActualE[PLM,PLM_elim,PLM_dest]:
java.lang.NullPointerException
 using logic_actual[necessitation_averse_axiom_instance, equiv_lr] .
 
 private lemma NotActualD[PLM_dest]:
java.lang.NullPointerException
 using RA by metis
 
 private lemma ActualImplI[PLM_intro]:
 "[\Aφ
 logic_actual_nec_2[axiom_instance, equiv_rl] .
 private lemma ActualImplE[PLM_dest, PLM_elim]:
 "[\A\ ψ) in v] ==> [\Aφ \ \Aψ in v]"
 using logic_actual_nec_2[axiom_instance, equiv_lr] .
 private lemma NotActualImplD[PLM_dest]:
 "¬[\A\ ψ) in v] ==> ¬[\Aφ \ \Aψ in v]"
 using ActualImplI b by blast
 
 private lemma ActualNotI[PLM_intro]:
 "[\¬\Aφ in v] ==> [\A\¬φ in v]"
 using logic_actual_nec_1[axiom_instance, equiv_rl] .
 lemma ActualNotE[PLM_elim,PLM_dest]:
 "[\A\¬φ in v] ==> [\¬\Aφ in v]"
 using logic_actual_nec_1[axiom_instance, equiv_lr] .
 lemma NotActualNotD[PLM_dest]:
 "¬[\Aby (metis equiv_dded_tm_cor"\^>&E" """)
 using ActualNotI by blast
 
 private lemma ActualConjI[PLM_intro]:
java.lang.NullPointerException
 unfolding equiv_def
 by (PLM_solver PLM_intro: act_conj_act_3[deduction])
 private lemma ActualConjE[PLM_elim,PLM_dest]:
 " iv] ==>φin v"
 unfolding conj_def by PLM_solver
 
 private lemma ActualEquivI[PLM_intro]:
 "[\Aφ \ \Aψ in v] ==> [\A\ ψ) in v]"
 unfolding equiv_def
 by (PLM_solver PLM_intro: act_conj_act_3[deduction])
 private lemma ActualEquivE[PLM_elim, PLM_dest]:
 "[\A\ ψ) in v] ==> [\Aφ \ \Aψ in v]"
 unfolding equiv_def by PLM_solver

 private lemma ActualBoxI[PLM_intro]:
 "[\φ in v] ==> [\A(\φ) in v]"
 using qml_act_2[axiom_instance, equiv_lr] .
 private lemma ActualBoxE[PLM_elim, PLM_dest]:
 "[\A(\φ) in v] ==> [\φ in v]"
 using qml_act_2[axiom_instance, equiv_rl] .
 private lemma NotActualBoxD[PLM_dest]:
 "¬[\A(\φ) in v] ==> ¬[\φ in v]"
 ActualBoxI y bla

 private lemma ActualDisjI[PLM_intro]:
 "[\Aφ \ \<  lemmas
 unfolding disj_def by PLM_solver
 LM_elim,PL,PLM_dest]::
 "[\A\ ψ) in v] ==> [\Aφlemma ntro_elim_7[PLM]:
 unfolding disj_def by PLM_solver
 private lemma NotActualDisjD[PLM_dest]:
 "¬in v] 🚫
 using ActualDisjI by blast

 private lemma ActualForallI[PLM_intro]:
 "[\ x . \A(φ x) in v] ==> [\A(\ x . φ x) in v]"
 using logic_actual_nec_3[axiom_instance, equiv_rl] .
 lemma ActualForallE[PLM_elim,PLM_dest]:
 > x . <phi Longrightarrow> [\ x . \A(φ x) in v]"
 using logic_actual_nec_3[axiom_instance, equiv_lr] .
 lemma NotActualForallD[PLM_dest]:
 "¬[\A(\ x . φ x) in v] ==> lemmas "\"^bol>¬
 using ActualForallI by blast

 lemma ActualActualI[PLM_intro]:
java.lang.NullPointerException
 using logic_actual_nec_4[axiom_instance, equiv_lr] .
 lemma ActualActualE[PLM_elim,PLM_dest]:
java.lang.NullPointerException
 using logic_actual_nec_4[axiom_instance, equiv_rl] .
 lemma NotActualActualD[PLM_dest]:
 "¬[\A\Aφ in v] ==> ¬[\Aφ in v]"
 using ActualActualI by blast
 end

 lemma ANeg_1[PLM]:
 "[\¬\Aφ \ \¬φ in dw]"
 by PLM_solver
 lemma ANeg_2[PLM]:
 "[\¬\A\¬φ \ φ in dw]"
 by PLM_solver
 lemma Act_Basic_1[PLM]:
 "[\Aφ \ \A\¬φ in v]"
 by PLM_solver
 lemma Act_Basic_2[PLM]:
 "[\A& ψ) \ (\Aφ & \Aψ
 by PLM_solver
 lemma Act_Basic_3[PLM]:
java.lang.NullPointerException
 by PLM_solver
 lemma Act_Basic_4[PLM]:
 "[(\A\ ψ) [PLM_intro:
 by PLM_solver
 lemma Act_Basic_5[PLM]:
 "[\A ==><>)
 by PLM_solver
 lemma Act_Basic_6[PLM]:
 "[\φ \ \A(\φ) in v]"
 unfolding diamond_def by PLM_solver
 lemma Act_Basic_7[PLM]:
 "[\Aφ \ \\Aφ in v]"
 by (simp add: qml_2[axiom_instance] qml_act_1[axiom_instance] "\I")
 lemma Act_Basic_8[PLM]:
 "[\A(\φ) \ \\Aφ in v]"
 by (metis qml_act_2[axiom_instance] CP Act_Basic_7 "\E"(1)
 "\E"(2) nec_imp_act vdash_properties_10)
 lemma Act_Basic_9[PLM]:
java.lang.NullPointerException
 using qml_act_1[axiom_instance] ded_thm_cor_3 nec_imp_act by blast
 lemma Act_Basic_10[PLM]:
java.lang.NullPointerException
 by PLM_solver

 lemma Act_Basic_11[PLM]:
 [<^bold>>.v]"
 proof -
 have "[\A(\ α . \¬φ α) \ (\ α . \A\¬φ α) in v]"
 using logic_actual_nec_3[axiom_instance] by blast
 hence "[\¬\A(\ α . "\<lbrakk[ in v]; [φ 🚫
 using oth_class_taut_5_d[equiv_lr] by blast
 moreover have "[\A\¬(\ α . \¬φ α) \ \¬\A(\ α . \¬φ α) in v]"
 using logic_actual_nec_1[axiom_instance] by blast
 ultimately have "[\A\¬(\ α . \¬φ α) \ \¬(\ α . \A\¬φ α) in v]"
 using "\E"(5) by blast
 moreover {
 have "[\equiv_de ded_th>E" "\^>
 using logic_actual_nec_1[axiom_universal, axiom_instance] by blast
java.lang.NullPointerException
 using cqt_basic_3[deduction] by fast
 hence "[(\¬(\ α . \A\¬φ α)) \inintr
 using oth_class_taut_5_d[equiv_lr] by blast
 }
 ultimately show ?thesis
 by (metis "\E" MetaSolver.EquivI Semantics.T7 existential)
 

 lemma act_quant_uniq[PLM]:
java.lang.NullPointerException
 by PLM_solver

 lemma lemmas " "\^>🚫
java.lang.NullPointerException
 using descriptions[axiom_instance] act_quant_uniq "\E"(5) by fast

 lemma hintikka[PLM]:
 "[(xP = (\ιx. φ x)) \ (φ x & (\ z . φ z \ z = x)) in dw]"
 proof -
 have "[(\ z . φ z \ z = x) \ (φ x & ( if_p_raa_co_2 byblas
 unfolding identity_ν_def apply PLM_solver using id_eq_obj_1 apply simp
java.lang.NullPointerException
 deduction, deduction]
 using id_eq_obj_2[deduction] unfolding identity_ν_def by fastforce
 thus ?thesis using "\E"(5) fund_cont_desc by blast
 qed

 lemma russell_axiom_a[PLM]:
 "[((F, \ιx. φ x)) context
 (is "[?lhs \ ?rhs in dw]")
 proof -
 {
 assume 1: "[?lhs in dw]"
 hence "[\α. αP = (\ιx. φ x) in dw]"
 using cqt_5[axiom_instance, deduction]
 SimpleExOrEnc.intros
 by blast
 then obtain α where 2:
 "[αP = (\ιx. φ x) in dw]"
 using "\E" by auto
 hence 3: "[φ α & (\ z . φ z \ z = α) in dw]"
 using hintikka[equiv_lr] by simp
 from 2 have "[(private lemma N NotNotI[[PLM_int]:
 using l_identity[where α="αP" and β="\<"[
 axiom_instance, deduction, deduction]
 id_eq_obj_1[where x=α] by auto
 hence "[(F, αP) in dw]"
 using 1 l_identity[where β="αP" and α="\ιx. φ x" and φ="λ x . (F,x)",
 axiom_instance, deduction, deduction] by auto
java.lang.NullPointerException
 hence "[?rhs in dw]" using "\I"[where α=α] by simp
 }
 moreover {
 assume "[?rhs in dw]"
 then obtain α where 4:
 "[φ α & (\ z . φ z bold>¬> [φ
 using "\E" by auto
 hence "[αP = (\ιx . φ x) in dw] [(F, αP) in dw]"
 using hintikka[equiv_rl] "&E" by blast
 hence "[?lhs in dw]"
 using l_identity[axiom_instance, deduction, deduction]
 by blast
 }
 ultimately show ?thesis by PLM_solver
 qed

 lemma russell_axiom_g[PLM]:
 "[{\ιx. φ x,F}
 (is "[?lhs \ ?rhs in dw]")
 proof -
 {
 assume 1: "[?lhs in dw]"
 hence "[\^bold>\<iotax dw]"
 using cqt_5[axiom_instance, deduction] SimpleExOrEnc.intros by blast
 then obtain α where 2: "[αP = (\ιx. φ x) in dw]" by (rule "\E")
 hence 3: "[(φ α & (\ z . φ z \ z = α)) in dw]"
 using hintikka[equiv_lr] by simp
 from 2 have "[(\ιx. φ x) = αP in dw]"
 using l_identity[where α="αP" and β="\ιx. φ x" and φ="λ using .
 axiom_instance, deduction, deduction]
 id_eq_obj_1[where x=α] by auto
 hence "[{αP, F} in dw]"
 using 1 l_identity[where β="αP" and α="\ιx. φ x" and φ="λ x . {x,F}",
 axiom_instance, deduction, deduction] by auto
 with 3 have "[(φ α lelemma ImplE[PLM_el PLM:
 using "&I" by auto
 hence "[?rhs in dw]" using "\I"[where α=α[φ ψ> ([φLongrigh> [ψ
 }
 moreover {
 assume "[?rhs in dw]"
 then obtain α where 4:
 "[φ α & (\ z . φ z \ z = α) & {αP, F} in dw]"
 using "\E" by auto
 hence "[αP = (\ιx . \<phi    
 using hintikka[equiv_rl] "&E" by blast
 hence "[?lhs in dw]"
 using l_identity[axiom_instance, deduction, deduction]
 by fast
 }
 ultimately show ?thesis by PLM_solver
 qed

 lemma russell_axiom[PLM]:
 assumes "SimpleExOrEnc ψ"
 shows "[ψ (\ιx. φ x) \ (\ x . φ x & (\ z . φ z \ z = x) & ψ (xP)) in dw]"
java.lang.NullPointerException
 proof -
 {
 assume 1: "[?lhs in dw]"
 hence "[PLM_intro]:
 using cqt_5[axiom_instance, deduction] assms by blast
 then obtain α where 2: "[α> (\Longrightarrow [\<^^bold
 hence 3: "[(φ α & (\ z . φ z \ z = α)) in dw]"
 using hintikka[equiv_lr] by simp
 from 2 have "[(\ιx. φ x) =P) in dw]"
 using l_identity[where α="αP" and β="\ιx. φ x" and φ="λ x . x = αusing CP modby bla
 axiom_instance, deduction, deduction]
 id_eq_obj_1[where x=α] by auto
 hence "[ψ (αP) in dw]"
 using 1 l_identity[where β"[longrightarrow> (\<forall\
 axiom_instance, deduction, deduction] by auto
 with 3 have "[φ α & (\ z . φ z \ z = α) & ψ (αP) in dw]"
 using "&I" by auto
 hence "[?rhs in dw]" using "\I"[where α=α] by (simp add: identity_defs)
 }
 moreover {
 assume "[?rhs in dw]"
 then obtain α where 4:
 "[φ α Convergence of the IMAP-CRDTstext\open>In this final section show that concurrent updates commute and thus Strong Eventual
java.lang.NullPointerException
  [🚫in dw] \and [🚫 i dw]"
java.lang.NullPointerException
  "[?lhs in dw]"
 using l_identity[axiom \\not> is"
 by fast
 }
 howti b PM_
 qed

 lemma uniqu
java.lang.StringIndexOutOfBoundsException: Index 141 out of bounds for length 141
 proof((rule "\\bold>\<equivI
 assume "[nd_expunge_ids_imply_messages_sameoncrren_apedexpung_inenenttechial
  obtaiα
 "[α<^upP = (x \<hi  ""(r, Store e2 mo r)
 by (rule "E")
 hence ""[φ \β φ \beta>> ]"
 using hintikka[equiv_lr] by auto
 thus "[!x . φ x n dw]"
 unfolding exists_unique_def using " is"
 next
 assume "[!x .>x in dw]"
 then obtain α where
 assumes "¬ e1 mo ii) (ir, Deleis e2)"
 unfolding exists_unique_def by (rule "E")
 hence "[α prefix of j"
 using hintikka[equiv_rl] by auto
 thus "[y. y= (\<iotax x) in dw]"
 using "I" by fast
 qed

 lemma y_in_1[PLM]:
 "[xP = (\ι> hb (i, Store e1 mo i) (r, Expunge e2 mo2 r)"
 using hintikkequiv_lr, conj1] by (rule CP)

 lemma y_in_2[PLM]:
 "[z= (\ φ dw]"
 using

  "xs pre of j"
 "[("as
 proof (rule CP)
java.lang.NullPointerException
  ob y where 1:
java.lang.NullPointerException
 by (rule "E")
java.lang.NullPointerException
 using y_in_2[deduction] unfolding identity_ν_def by blst
 thus "[φ (d_commute
 using l_identity[axiom_instance, deduction,
 deduction] 1 by fast
 qed

 lemma act_quant_nec[PLM]:
java.lang.NullPointerException
 by PLM_solver

 lemma equi_desc_descA_1[PLM]:
java.lang.NullPointerException
 using descriptions[axiom_in concurre delete_store_commute store_id_va)
 using act_quant_nec apply (rule " append_delete_ids_impl
 using descrip[axiom_instance]
java.lang.NullPointerException

 lemma uusi"\boldor>>I"y b
 
 ofreCP)
 assume preficontins_msgpply(mts
 then using assms preixcotais_sg ppl (mti
 " privrivate lemma DisjE[PLM_elim,PLM_dest:
java.lang.NullPointerException
 moreoverusing assmsprefix_cotin_msg by(mti cncren_str_tre_idepndnt tore_d_vld
 using equi_desc_d[qui_lr by ato
 ^bold>\<otaxιAφ x) in v]"
 using l_identity[axiom_instance, deduction, deduction]
 yast
 qed

 lemma equi_desc_descA_3[PLM]:
 assumes "SimpleExOrEnc ψ"
 shows "[ψ ( of j"
 proof (rule CP)
 assume "[ψιx. φ x) in v]"
java.lang.NullPointerException
 using cqt_5[OF assms, axiom_instance, deduction] by auto
 then obtain α where "[αxs i. xs prefix of i =ps "λ
java.lang.NullPointerException
 using equi_desc_descA_1[equiv_lr] by auto
 thus "[apply(mets(no_ypes, ifin)appl_peratins_dfbid.bind_lunit not_oe_q
java.lang.NullPointerException
 qed

 lemma equi_desc_descA_4[PLM]:
 assumes "SimpleExOrEnc ψ"
 shows "[ψ (\ιx. φ x) \ ((\ιx. φ x) = (\ιx. \Aφ x)) in v]"
 proof (rule CP)
java.lang.NullPointerException
 hence "[\α. αP = (\ιx. φ x) in v]"
 using cqt_5[OF assms, axiom_instance, deduction] by auto
java.lang.NullPointerException
 moreover hence "[α[PLM_in:
 using equi_desc_descA_1[equiv_lr] by auto
 ultimately show "[(\ιx. φ x) = ( "\lbrakk[φ[ψ] ==> 🚫
 using l_identity[axiom_instance, deduction, deduction] by fast
 qed

 lemma nec_hintikka_scheme[PLM]:
 "[(xP = (\ιx. φ x)) \ (\Aφ x & (\ z . \Aφ z \ z = x)) in v]"
 using descriptions[axiom_instance]
 apply (rule "\<^      using
 apply PLM_solver
 using id_eq_obj_1 apply simp
 using id_eq_obj_2[deduction]
 l_identity[where α="x", axiom_instance, deduction, deduction]
 unfolding identity_ν_def
 apply blast
 using l_identity[where α="x", axiom_instance, deduction, deduction]
 id_eq_2[where 'a=ν, deduction] unfolding identity_ν_def by meson

 lemma equiv_desc_eq[PLM]:
 assumes "x.[\A(φ x \ ψ x) in v]"
java.lang.NullPointerException
 proof(rule "\I")
 fix x
 {
 assume "[xP = ( [PLM_s]:
 hence 1: "[\Aφ] = ([φ\psii v])
 using nec_hintikka_scheme[equiv_lr] by auto
 hence 2: "[\Aφ x in v] [(\z. \Aφ z \ z = x) in v]"
 using "&E" by blast
 {
 fix z
 {
 assume "[\Aψ z in v]"
 hence "[\Aφ z in v]"
 using assms[where x=z] apply - by PLM_solver
 "\^A \<^>\
 using 2 cqt_1[axiom_instance,deduction] by auto
 ultimately have "[z = x in v]"
 using vdash_properties_10 by auto
 }
 hence "[\Aψ z \ z = x in v]" by (rule CP)
 }
 hence "[(\ z . \Aψ z \ z = x) in v]" by (rule "\I")
 moreover have "[\Aψ x in v]"
 using 1[conj1] assms[where x=x]
 apply - by PLM_solver
 ultimately have "[\Aψ x & (\z. \Aψ z \ z = x) in v]"
 by PLM_solver
 hence "[xP = (\ιx. ψ x) in v]"
 using nec_hintikka_scheme[where φ="ψ", equiv_rl] by auto
 }
 
 assume "[xP = (\ιx . ψ🚫
 hence 1: "[\Aψ x & (\z. \Aψ z \ z = x) in v]"
 using nec_hintikka_scheme[equiv_lr] by auto
java.lang.NullPointerException
 using "&E" by blast
 
 
 {
 assume "[\Aφ z in v]"
 hence "[\Aψ z in v]"
 using assms[wherx=z]
 apply - by PLM_solver
 moreover have "[\Aψ z phi>\^\equivψ\phi in v]
 using 2 cqt_1[axiom_instance,deduction] by auto
 ultimately have "[z = x in v]"
 using vdash_properties_10 by auto
 }
 hence "[\Aφ z \ in v] 🚫
 }
java.lang.NullPointerException
 moreover have "[\Aφ x in v]"
 using 1[conj1] assms[where x=x]
 apply - by PLM_solver
java.lang.NullPointerException
 by PLM_solver
 hence "[xP = (\ιx. φ x) in v]"
  nec_hinti[where φequiv_rl]
 by auto
 }
 ultimately show "[xP = (\ιx. φ x) privatelemma BoxI[PM_intr]:
 using "\I" CP by auto
 qed

 lemma UniqueAux:
java.lang.NullPointerException
 shows "[(\ z . ( lemma NotI[PPL:
 proof -
 {
 fix z
 {
 assume "[\A(φ z) in v]"
 hence "[z = α in v]"
 using assms[conj2, THEN cqt_1[where α=z,
 axiom_instance, deduction],
 deduction] by auto
 }
 moreover {
 assume "[z = α in v]"
 hence "[α= z in v]"
 unfolding identity_ν_def
 using id_eq_obj_2[deduction] by fast
 hence "[\A(φ z) in v]" using assms[conj1]
 using l_identity[axiom_instance, deduction,
 deduction] by fast
 }
java.lang.NullPointerException
 using "\I" CP by auto
 }
 thus "[(\ z . (2) "\"bold>
 by (rule "\I")
 qed

 lemma nec_russell_axiom[PLM]:
 assumes "SimpleExOrEnc ψ"
 shows "[(ψ (\ιx. φ x)) phi>in v v] = ([φlongrighta> ()
 & ψ (xP)) in v]"
 (is "[?lhs \ ?rhs in v]")
 proof -
 {
 assume 1: "[?lhs in v]"
 hence "[\α. (αP) = (\ιx. φ x) in v]"
 using cqt_5[axiom_instance, deduction] assms by blast
 then obtain α where 2: "[(αP) = (\ιpriva lemma ConPLM_i]:
 hence "[(\ z . (fastforce
 using descriptions[axiom_instance, equiv_lr] by auto
java.lang.NullPointerException
 using cqt_1[where α=α and φ="λ z . (\ lemma oth_class_taut_1_a[[PLM]:
 axiom_instance, deduction, equiv_rl]
 using id_eq_obj_1[where x=α] unfolding identity_ν_def
 sing hintikka[equiv_l cq]
 "&I" by fast
 from 2 have "[(\ιx. φ x) =P) in v]"
 using l_identity[where β="(\ιx. φ x)" and φ="λ x . x = (αusing "\^>&I"by bla
 axiom_instance, deduction, deduction]
  a ConjE ConjE[PLM_elim,PLM_dest]:
 hence "[ψ (αP) in v]"
 using 1 l_identity[where α="(\ιx. φ x)" and φ="λ x . ψ x",
 axiom_instance, deduction,
 deduction] by auto
  3 have "[(^bold>\>🚫
 using "&I" by simp
 hence "[?rhs in v]"
 using "\I"[where α=α]
 by (simp add: identity_defs)
 }
 moreover {
 assume "[?rhs in v]"
 then obtain α where 4:
java.lang.NullPointerException
 using "\E" by auto
 hence "[(\ z . (\A(φ z) \ (z = α))) in v]"
 using UniqueAux "&E"(1) by auto
 hence "[(αP) = (\ιx . φ x) in v] [ψ (αP) in v]"
 using descriptions[axiom_instance, equiv_rl]
 4[conj2] by blast
 hence "[?lhs in v]"
 using l_identity[axiom_instance, deduction,
 deduction]
 by fast
 }
 ultimately show ?thesis by PLM_solver
 qed

 lemma actual_desc_1[PLM]:
 "[(\ y . (yP) = (\ιx. φ x)) \ (\! x . \A(φ x)) in v]" (is "[?lhs \ ?rhs in v]")
 proof -
 {
 assume "[?lhs in v]"
 then obtain α where
java.lang.NullPointerException
 by (rule "\E")
 hence "[(A!,(\ιx. φ x)) in v] [(αP) =E (\ιx. φ x) in v]"
 apply - unfolding identity_defs by PLM_solver
 then obtain x where
java.lang.NullPointerException
 using nec_russell_axiom[where ψ="λx . (A!,x)", equiv_lr, THEN "\E"]
 using nec_russell_axiom[where ψ="λx . (α lemma Conj[PLM_sust]:
 using SimpleExOrEnc.intros unfolding identityE_infix_def
java.lang.NullPointerException
 hence "[?rhs in v]" unfolding exists_unique_def by (rule "\I")
 }
 moreover {
 assume "[?rhs in v]"
 then obtain x where
 "[((\A CoonjI Conjby blast
  exists_ by (rule "🚫
 hence "[\]"
 using UniqueAux by auto
 hence "[(x>ι x) in v]"
 using descriptions[axiom_instance, equiv_rl] by auto
 hence "[?lhs in v]" by (rule "\I")
 }
 ultimately show ?thesis
 using "\I" CP by auto
 qed

 lemma actual_desc_2[PLM]:
 "[(xP) = (\ιx. φ) \ \Aφ in v]"
 using nec_hintikka_scheme[equiv_lr, conj1]
 by (rule CP)

 lemma actual_desc_3[PLM]:
 "[(zP) = (\ιx. φ x) \oth_PLM]:
 using nec_hintikka_scheme[equiv_lr, conj1]
 by (rule CP)

 lemma actual_desc_4[PLM]:
java.lang.NullPointerException
 proof (rule CP)
 assume "[(\ y . (yP) = (\ιx . φ (xP))) in v]"
 then obtain y where 1:
java.lang.NullPointerException
 by (rule "\E")
 hence "[\A>r v] ==> in vv]]
 thus "[\A(φ (\ιx. φ (xP))) in v]"
 using l_identity[axiom_instance, deduction,
 deduction] 1 by fast
 qed

 lemma unique_box_desc_1[PLM]:
 "[(\!x . \(φ x)) \ (\ y . (yP) = (\ιx. φ x) \ φ y) in v]"
 proof (rule CP)
 assume "[(\ψ> in v]
 then obtain α where 1:
  "[🚫
 unfolding exists_unique_def by (rule "\E")
 {
 fix y
 {
 assume "[( v]"
 hence "[\Aφ α \ α = y in v]"
 using nec_hintikka_scheme[where x="y" and φ="φ", equiv_lr, conj2,
 THEN cqt_1[where α=α,axiom_instance, deduction]] by simp
 hence "[α = y in v]"
 using 1[conj1] nec_imp_act vdash_properties_10 by blast
 hence "[φ y in v]"
 using 1[conj1] qml_2[axiom_instance, deduction]
 l_identity[axiom_instance, deduction, deduction]
 by fast
 }
 hence "[(yP) = (\ιx. φ x) \>[φ> [ψpsi> in v] \Longrightarrow[φrbr> ==>bo>
 by (rule CP)
 }
 thus "[\ y . (yP) bold>))\ψ>\<oror]
 by (rule "\I")
 qed

 lemma unique_box_desc[PLM]:
 "[(\ x . (φ x \ \(φ x))) \ ((\!x . φusing CP"🚫
 \ (\ y . (yP = (\<     "\longrightarrow[φ))"
 apply (rule CP, rule CP)
 using nec_exist_unique[deduction, deduction]
 unique_box_desc_1[deduction] by blast

 
 \label{TAO_PLM_Necessity}\   oth_class_tPLM]:

 lemma RM_1[PLM]:
java.lang.NullPointerException
 using RN qml_1[axiom_instance] vdash_properties_10 by blast

 lemma RM_1_b[PLM]:
 "(v.[χ in v] ==>\ ψ in v]) ==> ([\χ in v] ==> [\φ \ \ψ in v])"
 using RN_2 qml_1[axiom_instance] vdash_properties_10 by blast

 lemma RM_2[PLM]:
java.lang.NullPointerException
 unfolding diamond_def
 using RM_1 contraposition_1 by auto

 lemma RM_2_b[PLM]:
 "(v.[χ in v] ==>\ ψ in v]) ==> ([\χ in v] ==> [\φ \ \ψ in v])"
 unfolding diamond_def
 using RM_1_ contraposition_1 by blast

 lemma KBasic_1[PLM]:
java.lang.NullPointerException
 by (simp only: pl_1[axiom_instance] RM_1)
 lemma KBasic_2[PLM]:
 "[\(\¬φ) > 🚫
 by (simp only: RM_1 useful_tautologies_3)
 lemma KBasic_3[PLM]:
 "[\& ψ) \ \φ & \ψ in v]"
 apply (rule "\I")
 apply (rule CP)
 apply (rule "&I")
 using RM_1 oth_class_taut_9_a vdash_properties_6 apply blast
 using RM_1 oth_class_taut_9_b vdash_properties_6 apply blast
 usingusing qml_1[axiom_ RM_1 ded_thm_cor_3 oth_class_ta
 oth_class_taut_8_b vdash_properties_10
 by blast
 lemma KBasic_4[PLM]:
 "[\\ ψ) \ (\\ ψ) & \\ φ)) in v]"
java.lang.NullPointerException
 unfolding equiv_def using KBasic_3 PLM.CP "\E"(1)
 apply blast
 using KBasic_3 PLM.CP "\E"(2)
 by bl
 lemma KBasic_5[PLM]:
java.lang.NullPointerException
 by (metis qml_1[axiom_instance] CP "&E" "\I" vdash_properties_10)
 lemma KBasic_6[PLM]:
 "[\
 using KBasic_4 KBasic_5 by (metis equiv_def ded_thm_cor_3 "&E"(1))
 lemma "[(🚫
 nitpick[expect=genuine, user_axioms, card = 1, card i = 2]
 oops countermodel as desired
 lemma KBasic_7[PLM]:
 "[(\φ & \ψ) \ \\ ψ) in v]"
 proof (rule CP)
 assume "[\φ & \oth_[PLM
 hence "[\\ φ) in v] [phi \phi> "
 using "&E" KBasic_1 vdash_properties_10 by blast
 thus "[\\ ψ) in v]"
 using KBasic_4 "\E"(2) intro_elim_1 by blast
 qed

 lemma KBasic_8[PLM]:
 "[\private lemma BoxI[PLM_intro]:
 using KBasic_7 KBasic_3
 by (metis equiv_def PLM.ded_thm_cor_3 "&E"(1))
 lemma KBasic_9[PLM]:
java.lang.NullPointerException
 proof (rule CP)
 assume "[> (φb>¬
 hence "[\((\¬φ) \ (\¬ψ)) in v]"
 using KBasic_8 vdash_properties_10 by blast
 moreover have "v.[((\¬φ) \ (\¬ψ)) \
 using CP "\E"(2) oth_class_taut_5_d by blast
 ultimately show " ψ) in v]"
 using RM_1 PLM.vdash_properties_10 by blast
 qed

 lemma rule_sub_lem_1_a[PLM]:
 "[\\ χ) "[(\phi^old>ψ^bol>>v]"
 using qml_2[axiom_instance] "\E"(1) oth_class_taut_5_d
 vdash_properties_10
 by blast
 lemma rule_sub_lem_1_b[PLM]:
 "[\\ χ) in v] ==> [(ψ \ Θ) \\ Θ) in v]"
 by (metis equiv_def contraposition_1 CP "&E"(2) "\I"
 "\E"(1) rule_sub_lem_1_a)
 lemma rule_sub_lem_1_c[PLM]:
 "[\lemma ototh_clPLM]:
 by (metis CP "\I" "\E"(3) "\ "[(φ> 🚫
 "\¬\¬E" rule_sub_lem_1_a)
 lemma rule_sub_lem_1_d[PLM]:
 "(x.[\(ψ x \ χ x) in v]) ==> [(\α. ψ α) \ (\α. χ α) in v]"
 by (metis equiv_def "\I" CP "&E" "\I" raa_cor_1
java.lang.NullPointerException
 lemma rule_sub_lem_1_e[PLM]:
 [\equiv> 🚫
 using Act_Basic_5 "\E"(1) nec_imp_act
 vdash_properties_10
 by bl
 lemma rule_sub_lem_1_f[PLM]:
 "[\\ χ) in v] ==> [\<^   "
 using KBasic_6 "\I" "\E"(1) vdash_properties_9
 by blast


 named_theorems Substable_intros
 
 definition Substable :: "('a==>'a==>bool)==>('a==>o) ==> bool"
 where "Substable (λ cond φ . ψ χ v . (cond ψ χ) [φ ψ \ φ χ in v])"
 
 lemma Substable_intro_const[Substable_intros]:
 "Substable cond (λ φ . Θ)"
 unfolding Substable_def using oth_class_taut_4_a by blast

 lemma Substable_intro_not[Substable_intros]:
 assumes "Substable cond ψ"
 shows "[(\^lemm oth_class_taut_3_c[LM]:
 using assms unfolding Substable_def
 using"(\phi\>p> \^>& \<hi)\rightarrowb x in v]"
 lemma Su[Sustbe_nrs]:
 assumes "Substable cond ψ"
 and "Substable cond χ
 howss "Sbstble cond(🚫
 using assms unfolding Substable_def
 by (metis "byPLM_
 lemma Substable_intro_box[Substable_intros]:
 assumes "Substable cond ψ"
java.lang.NullPointerException
 }
 using rule_sub_lem_1_f RN by meson
 lemma Substable_intro_actual[Substable_intros]:
 assumes "Substable cond ψ"
 ψ
 using assms unfolding Substable_def
 using rule_sub_lem_1_e RN by meson
 lemma Substable_intro_all[Substable_intros]:
 assumes "
 shows "Substable cond (λActuality and Descriptions

 using assms unfolding Substable_def
 by (simp add: RN rule_sub_lem_1_d)

 named_theorems Substable_Cond_defs
 qml_2[aiom_actualaion, aiointne

  Substable =
 fixes Substable_Cond :: "'aual[axio
 assumesslesuneec:
 "
 ==>A ψ [\<>\

  o
 
 definition Substable_Cond_o"[\bold <^old\A) \A in v]"
 "Substable_Cond_o . nv"
 instance "[🚫φ \Aφv"
 interpret PLM .
 fix φ o" and ψ :: o>:: "bool ==>
 assume "Substable Substable_Cond φ"
 moreover assume "Substable_Cond ψ"
java.lang.StringIndexOutOfBoundsException: Index 182 out of bounds for length 182
  Substable_def by blast
 hence "[φ ψ in v] = [φ χ in v]" using "\E" by blast
 moreover assume "Θ ψ
 imatelytly hw"Θ χ
 qed
 

 ( α \¬ <>) . α
 qt_basic_3dcto] byat
 definition Substable_Cond_fun where [PLM.Substable_Cond_defs]:
 ows
 instance proof
 interpret PLM .
 fix φ 'b) ==>" and \psi χa \Rightarrow 'b" andΘ
 assume
 moreover assume "Substable_Cond ψ χ"
  ψ χE"(5) byfs
 unfolding Substable_def by blast
 hence "[φ χsingg"\E" by blast
 moreover assume "Θ [φ ψ in v]"
 ultimately show "Θ [φ in v]" by simp
 qed
 

  PLM
 

 lemma Substable_intro_equiv[Substable_intros]:
 assumes Subbstabl on\<si"
 stablen<>"
 shows "Substable cond (\<lambdathen
 unfolding conn_defs by (simp add: assms Substable_intros)
 lemma Substable_intro_conj[Substable_intros]:
 assumes "Substable cond ψ
 and "Substable cond χ
 shows "Substable cnd \<ambda  φ
 unfolding conn_defs by (simp add: assms Substable_intros)
 lemma Substable_intro_disj[Substable_intros]:
 assumes "Substable cond \< \
 and "Substable cond χ"
 shows "Substable cond (λ φ . ψ φ \by blast
 unfolding conn_defs by (simp add: assms Substable_intros)
 lemma Substable_intro_diamond[Substable_intros]:
 assumes "Substable cond ψ
 shows "Substable cond (λ φ
 unfolding conn_defs by (simp add: assms Substable_intros)
 lemma Substable_intro_exis[Substable_nr]:
 assumes " x . Substable cond (ψ x)"
  proof --
 unfolding conn_defs by (simp add: assms Substable_intros)

 lemma Substable_intro_id_o ipEOrc.itrsbblst
 "Substable Substable_Cond (λbi \alpha whe : [<>\P = (x. φ>E")
 unfolding Substable_def Substable_Cond_o
 lemma Substable_intro_id_fun[Substable_intros]:
java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
 shows "Substable Substable_Cond (λ
 using assms unfolding Substable_def Substable_Cond_fun_def
 by blast

 method PLM_subst_method for ψ::"'a::Substable" and χ::"'a::Substable" =
 (match conclusion in "Θ [φ in v]" r <>nd
 =ψ=φ
 ((fast intro: Substable_intros, ((assumption)+)?)+; fail),
 unfold Substable_Cond_defs)


 method PLM_autosubst =
java.lang.NullPointerException
  and v ==>
 \<penrule
 ((fast intro: Substable_intros, ((assumption)+)?)+; fail),
 unfold Substable_Cond_defs)


 method PLM_autosubst1 =
 (match premises in "v x . [ψ
 for ψ::"'a::type==>\   peErnc <>"
  φ
  ?rhs in dw]")
 ((fast intro: Substable_intros, ((assumption)+)?)+; fail),
 unfold Substable_Cond_defs)


 method PLM_autosubst2 =
 (h rms in"<dx x y x y in v]"
 for \<>:::"'a::type==>o
java.lang.NullPointerException
  and ψ and φ and v=v],
 ((fast intro: Substable_intros, ((assumption)+)?)+; fail),
 unfold ubsale_o_es<> 

  Msbs_o_meto fr\phi:'a:Sbsale🚫o" and ψ::"'a" =
 (mat concluinn Theta> [\phiχ in v]" for Θ and χ and v ==>
  and φ and v=v],
 ((fast intro: Sustbl_nrs,((smtin+)); il,
 unfold Substable_Cond_defs)
)

 
 text{* \begin{TODO}
 only vnuin th SatcsofthBxoprtr.
 As it is not needed for the further reasoning it remains commented for now.
 \end{TODO} *}
 lemma rule_sub_lem_2:
 assumes "Substable Substable_Cond φ"
 shows "[\(ψ \<^          using
 using assms unfolding Substable_def Substable_Cond_defs
 using Semantics.T6 by fast
*)


  lemma rule_sub_nec["bold y . y= ( bo>\equiv> (\<exists>!x . φ x) in dw]"     
    assumes "bstableubtale_Cn <>"
    shows "( ) in v]) ==> [🚫 χ

    proof -

      assume "(E"

      hence <> <>iv = \> in v]"
        using assms RN unfolding Substable_def Substable_Cond_defs
        using><equiv>I" CP "(on
      thus "Θ ψ Θ [φ in v]" by auto
    qed

  lemmarule_sub_nec1[PLM]:
    assumes "Substable Substable_Cond φ"
    shows "(v x .[(ψ x \< then obta obtain α

    proof -

      assume "(v x.ψ x \^ x) in
      hence "[φ ψ in v] = [φ χ in v]"
        using assms RN unfolding Substable_def Substable_Cond_defs
        using "\<equiv>I" CP "\<equiv>E"(1"\<equiv>E"(2by metisby PLM_solver
      thus "Θ [φ ψ in v] ==> Θ [φ χ in v]" by auto
    qed

  lemma rule_sub_nec2[PLM]:
    assumes "Substable Substable_Cond φ"
    shows<Andxy .ψ Θ> in <Longrightarrow >  v]"

    proof -

      assume "(v x y .[ψ x y \<equiv> χ x y in v])"

      hence "[φ ψ in v] = [φ χ in v]"

        using assms RN unfolding Substable_def Substable_Cond_defs

        using "\<equiv>I" CP "\<equiv>E"(1) "\<equiv>E"(2) by metis

      thus "Θ [φ ψ in v] ==> Θ [φ χ in v]" by auto

    qed

  lemma rule_sub_remark_1_autosubst:
    assumes "(v.[(A!,x) \<equiv> (\<not>(\<diamond>(E!,x))) in v])"
        and "[\<lparr>A!,x) in v]"
    ^bod>\>\^b>¬\<lparr>E!,x) in v"
    applyinsert auto

  lemmarule_sub_remark_1
    assumes "(v.[(A!,x)
        and "[java.lang.NullPointerException
      shows"[\<not>\<not>\<diamond>(E!,x) in v]"
    apply (PLM_subst_method "(A!,x)" "(byueP)
     apply (simp add: assms(1))
    by (simp add: assms(2))

  lemma
    assumes "(v.[(R,x,y) y . y= (x .<> x^>))) \<rightarrow ( (xjava.lang.NullPointerException
        and "[<rightarrow> in v]"
    shows  here
    pplypply_ubst

  lemma rule_sub_remark_3_autosubst:
    assumes "(A!,x ((\<lparrE!,x<^sup>P))) in v])"
        and "[_def by blast
    [<bold>(>)) in v]"
    apply (insert assms) apply PLM_autosubst1 by auto

  lemma rule_sub_remark_3:
    assumes "(
        and "[ x . (P) in v]"
    shows "[\<exists> x . (\<not
    apply (PLM_subst_method "λx . (A!,xP)(\^>P 🚫 (x= (x . <ph> ))) in v]"
     apply (simp add: assms(1))
    by (simp add: assms(2)

  lemma rule_sub_remark_4:
    assumesui_desc_descA_2
        and "[\<A>(\<not>(\<not>\<>\P))) in v]"
    shows "[\<A>(P,x\<exists>y. y= (>. φ x) in v]"
    apply (insert assms) apply PLM_autosubst1 by auto

  lemma rule_sub_remark_5:
    assumes "v.[(φ morhene [\^>P = (\<A>φ x) in v]"
        and "[boldιx. φ x) \<iota>x. \<phi> x) in v]"
    shows "[\<box>((\<not>ψ) ,uton dedcio
    apply (insert assms) apply PLM_autosubst by auto

  lemma rule_sub_remark_ emma eqides_desA3L:
     sme "Andv.[ψ  χn v]"
        and "[\<iota>x. φ x)  ( y . y= (x <boldφ
    shows java.lang.NullPointerException
    apply (insert assms) apply PLM_autosubst by aut

  lemma rule_sub_remark_7:
    assumes "v.[φ \<equiv> (java.lang.NullPointerException
        and "[(φ φ) in v]"
    shows((bold¬φ)) 🚫 yto
    pply _osubst

  lemmaemma
    assumes>.[\<phi><equiv> φ in v]"
        and "[\<box>(java.lang.NullPointerException
    shows "[\<box>(φ) in v]"
    apply (insert assms) apply PLM_autosubstto

  lemma rule_sub_remark_9
    assumes "P,a) (( Q,b) (Q,b)))in v]
        and "\lparrP,a) <bold= (P,a)
    shows "[(P,a)= ((P,a)& ((Q,b)bo(\<lparr>Q,b)
      ply (insert assms)
      apply PLM_autosubst oops

  
  @{text "dr_alphabetic_thm"} implicitly holds

  lemma KBasic2_1[PLM]:
    "[\<box>φ java.lang.NullPointerException
    apply (PLM_subst_method "φ="x", axiom_instance, deduction, deduction]
     by PLM_solver+

  lemma KBasic2_2[PLM]:
    "[(\<not
    unfolding diamond_def
    apply (PLM_subst_method "φ>\not>(\<not>\<phi)
     by PLM_solver+

  lemma KBasic2_3[PLM]:
    "[\<box>φ{
    unfolding diamond_def
    pply>" "(\<phi
     yLM_solver
    by (simp add: oth_class_taut_4_b)
  lemmas "Df" = KBasic2_3

   f z
    "[\<box>(\<A>ψ
    unfolding diamond_def
    by (simp add: oth_class_taut_4_b)

  lemma KBasic2_5[PLM]:
    "[\<box>(φ \<rightarrow> ψ) \<rightarrow> (\<diamond>φ \<rightarrow> \<diamond>ψ) in v]"
    by (simp             z<> x in v]"
  lemmas "Kjava.lang.NullPointerException

  lemma KBasic2_6[PLM]:
    "[> ψ^bol (\<diamond>φ \<or> \<diamond>ψ) in v]"
    proof -
      have "[((<p>) \<not>ψ)) <^bod\equiv(\<box>(><phi>) \<box>(\<o>ψ
        using sing 1cn1]asm[her =x
      hence "[(\<not>(\<diamond        ultimately have java.lang.NullPointerException
        using "Df\<boxιx. ψ x) in v]"
      hence "[(((((\<phi^> (\<not>ψ\^ (((\<phi>) \^& (\^olddiamondψ))) in v]java.lang.StringIndexOutOfBoundsException: Index 245 out of bounds for length 245
        apply - apply (PLM_subst_methodP \<iota>x . ψ
         apply (simp4
        apply (PLM_subst_method "\<A>ψ x in v] z. \<rightarrow> z x v"
         apply (simp add: KBasic2_4)
        unfolding diamond_def by assumption
      hence java.lang.NullPointerException
        apply - apply (PLM_subst_method "(( PLM_solver
        using oth_class_taut_6_b[equiv_sym] by auto
      hence java.lang.NullPointerException
        by (rule oth_class_taut_5_d[equiv_lr])
      hence "[\<diamond>(φ \<or>              dash_properties_10
          apply(PLM_subst_method<^boldnot^bold>🚫
        using oth_class_taut_4_b^boldz.  ^><rightarrow> z ) vI")
      thus ?thesis
        apply - apply (PLM_subst_method "           1[conj1
        using oth_class_taut_6_b[equiv_sym] by auto
    qed

  lemmaBasic2_7
    "[( ) \<box>(φ ψ
    proof -
      have "
        by (metis contraposition_1 contraposition_2 useful_tautologies_3 disj_def)
      hence^bold \<box>(φ ψyauto
      moreover {
          have " v . [ψ \<rightarrow> (φ
            by (simp only: pl_1[axiom_instance] disj_def)
          hence "[ \<box>(φ ) in
            using RM_1 by auto
      }
      ultimately show ?thesis
        using oth_class_taut_10_d vdash_properties_10 by blast
    qed

  lemma KBasic2_8[PLM]:
    "[\<diamond>(φ = α in v]"
     metis&I" oth_class_taut_9_a
              oth_class_taut_9_b vdash_proper unfolding identi\nu_def

  lemma KBasic2_9[PLM]:
    "[\<diamond>(φ
    apply        
     using oth_class_taut_5_k[equiv_symly
   ybst_method¬φ <><or> ψ" "φ  <psi
     usingtaut_5_k[equiv_symsimp
    apply (PLM_subst_method()" "\<box>φ)")
     using KBasic2_2[equiv_sym] apply simp
    using KBasic2_6 .

  lemma KBasic2_10[PLM]:
    "[\<box>φ)  (\<box>())) in v]"
java.lang.NullPointerException
    using oth_class_taut_4_b oth_class_taut_4_a by auto

  lemma KBasic2_11[PLM]:
    "[\<diamond>φ  ((\<^bold>¬φ
    unfolding diamond_def
    apply (PLM_subst_method "\<box>(ast
using oth_class_taut_4_b oth_class_taut_4_a by auto

  lemma KBasic2_12[PLM]: "[\<box         java.lang.NullPointerException
    proof -
  <bod><b>(\<>  φ) \<^old<🚫<rightarrow> \<box>φ
        using CP RM_1_b "
      hence java.lang.NullPointerException
        unfolding diamond_def disj_def
        by (meson CP "\<^bold>notE" vdash_properties_6)
      thus ?thesis apply -
        apply (PLM_subst_method "(java.lang.NullPointerException
         apply (simp add(> \<iota>x. φx)) vjava.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
        apply (PLM_subst_method phi)" " psi)")
         apply (simp add: PLM.oth_class_taut_3_e)
        by assumption
    qed

  lemma TBasic[PL
    "  n"
    unfolding diamond
   apply (subst contraposition_1)
    apply (PLM_subst_method "\<^bold><ot>φ" "\<not>\<not>\<box>\<not>φ
     apply (simp add: PLM.oth_class_taut_4_b)
    using qml_2[where φ="\<not>φthen obtain x where
    by simp
  lemmas "Tjava.lang.NullPointerException

  lemma S5Basic_1[PLM]:
    java.lang.NullPointerException
    proof (rule CP)
      assume "[\<diamond>java.lang.NullPointerException
      nce¬\<diamond>\<phi> in
        using KBasic2_10[equiv_lr] by simp
      moreover have java.lang.NullPointerException
        by (simp add: qml_3[axiom_ins])
      ultimately have "[\<not>java.lang.NullPointerException
        by (simp add[java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
      thus "[\<box>\<sing 
        unfolding diamond_def apply -
        apply PMustetod "bold¬\^<not>φ" "φ
         using oth_class_taut_4_b[equiv_sym] apply simp
        unfolding usingaut_4_b
        by simp      then obtain:
    qed
  lemmas "5\<>E"

  lemma[]
    "[\<box>φ
    using "5\<diamond

  lemma S5Basic_3[PLM]:
    "[\<diamond>φ \<equiv> \<e!.<^bold>\boxφ x)) in v]"
    qml_3nstanceI blast

  lemma S5Basic_4[PLM]:
    java.lang.NullPointerException
    using "TP\<iota>x. φ xin
    by (rule CP)

  lemma
    "[\<box>φ φ in v]"
    using S5Basic_2[equiv_rl, THEN qml_2[axiom_instance, deduction]]
    by (rule CP)
  lemmas "B\<diamond>" = S5Basic_5

  lemma S5Basic_6[PLM]:
    "[\<box>φ \<rightarrow> by PLM_solve
    using S5Basic_4[deduction] RM_1[OF S5Basic_1, deduction] CP by auto
  lemmas "4\<box>" = S5Basic_6

  lemma S5Bas[PLM]:]:
    "[\<box>φ \<equiv> \<box>\<box>φ in v]"
    using "4\<box>" qml_2[axiom_instance] by (rule "\<equiv>I")

  lemma S5Basic_8[PLM]:
    "[\<diamond>\<diamond>φ \<rightarrow> \<diamond>φ in v]"
    using S5Basic_6[where φ="\<not>φ", THEN contraposition_1[THEN iffD1], deduction]
           by PLM_soPLM_solver
  lemmas "4\<diamond>" = S5Basic_8

  lemma S5Basic_9[PLM]:
    "[\<diamond>\<diamond>φ \<equiv> \<diamond>φ in v]"
    using "4\<diamond>" "T\<diamond>" by (rule "\<equiv>I")

  lemma S5Basic_10[PLM]:
    "[\<box>(φ \<or> \<box>ψ) \<equiv> (\<box>φ \<or> \<box>ψ) in v]"
    apply (rule "\<equiv>I")
     apply (PLM_subst_goal_method "λ χ . \<box>(φ \<or> \<box>ψ) \<rightarrow> (\<box>φ \<or> χ)" "\<diamond>\<box>ψ")
      using S5Basic_2[equiv_sym] apply simp
     using KBasic2_12 apply assumption
    apply (PLM_subst_goal_method "λ χ .(PLM_solver
     using S5Basic_7[equiv_sym] apply simp
    using KBasic2_7 by auto

  lemmaS5Basic_11:
    "[\<box>(φ \<or> \<diamond>ψ) \<equiv> (\<box>φ \<or> \<diamond>ψ) in v]"
    apply (rule "\<equiv>I")
     apply (PLM_subst_goal_method "λ χ . \<box>(φ \<or> \<diamond>ψ) \<rightarrow> (\<box>φ \<or> χ)" "\<diamond>\<diamond>ψ")
      using S5Basic_9 apply simp
     using KBasic2_12
    apply (PLM_subst_goal_method "λ χ .(\<box>φ \<or> χot[PLM]:
     using S5Basic_3[equiv_sym] apply simp
usingKBasic2_7b assu

  lemma S5Basic_12[PLM]:
    "[\<diamond>(φ & \<diamond>ψlemmaoth_class_taut_8_b
    proof -
      have "[> (\psi \^>\<rightarrowightarrow ((φ>) 🚫
        using S5Basic_10 by auto
      hence 1: "[(\<not>\<box>((\<not>φ) \<or> \<box>(\<not>ψ))) \<equiv> \<not>(\<box>(\<not>φ) \<or> \<box>(\<not>ψ)) in v]"
        using oth_class_taut_5_d[equiv_lr] by auto
      have 2: "[(byPLM_solver
        apply (PLM_subst_method "\<box>\<no
         using KBasic2_4 apply simp
        apply (PLM_subst_method "\<box>\<not>φ" "\<not>\<diamond>φ")
         using KBasic2_4 apply simp
        apply (PLM_subst_method "(\<not>\<box>((\<not>φ) \<or> \<box>(\<not>ψ)))" "(\<diamond>(\<not>((\<not>φ) \<or> (\<box>(\<not>ψ)))))")
         unfolding diamond_def
         apply (simp add: RN oth_class_taut_4_b rule_sub_lem_1_a rule_sub_lem_1_f)
        using 1 by assumption
      show ?thesis
        apply (PLM_subst_method "\<not>((\<not>φ) \<or> (\<not>\<diamond>ψ))" "φ & \<diamond>ψ")
         using oth_class_taut_6_a[equiv_sym] apply simp
        apply (PLM_subst_method "\<not>((\<not>(\<diamond>φ)) \<or> (\<not>\<diamond
         using oth_class_taut_6_a[equiv_sym] apply simp
        using 2 by assumption
    qed

  lemma S5Basic_13[PLM]:
    "[\<diamond>(φ & (\<box>ψ)) \<equiv> (\<diamond>φ & (\<box>ψ)) in v]"
    apply (PLM_subst_method "\<diamond>\<box>ψ" "\<box>ψ")
     using S5Basic_2[equiv_sym] apply simp
    using S5Basic_12 by simp

  lemma S5Basic_14[PLM]:
    "[\<box>(φ \<rightarrow> (\<box>ψ)) \<equiv> \<box>(\<diamond>φ \<rightarrow> ψ) in v]"
    proof (rule "\<equiv>I"; rule CP)
      assume "[\<box>(φ \<rightarrow> \<box>ψ) in v]"
      moreover {
        have "v.[\<box>(φ \<rightarrow> \<box>ψ) \<rightarrow> (\<diamond>φ \<rightarrow> ψ) in v]"
          proof (rule CP)
            fix v
            assume "[\<box>(φ \<rightarrow> \<box>ψ) in v]"
            hence "[\<diamond>φby PLM_solver
              using "K\<diamond>"[deduction] by auto
            thus "[\<diamond>φ \<rightarrow> ψ in v]"
              using "B\<diamond>" ded_thm_cor_3 by blast
          
        hence "[\<box>(\<box>(φ \<rightarrow> \<box>ψ) \<rightarrow> (\<diamond>φ \<rightarrow> ψ)) in v]"
          by (rule RN)
        hence "[\<box>(\<box>(φ \<rightarrow> \<box>ψ)) \<rightarrow> \<box>((\<diamond>φ \<rightarrow> ψ)) in v]"
          using qml_1[axiom_instance, deduction] by auto
      }
      ultimately show "[\<box>(\<diamond>φ \<rightarrow> ψ) in v]"
        using S5Basic_6 CP vdash_properties_10 by meson
    next
      assume "[\<box>(\<diamond>φ \<rightarrow> ψ) in v]"
      moreover {
        fix v
        {
          assume "[\<box>(\<diamond>φ \<rightarrow> ψ) in v]"
          hence 1: "[\<box>\<diamond>φ \<rightarrow> \<box>ψ in v]"
            using qml_1[axiom_instance, deduction] by auto
          assume "[φ in v]"
          hence "[\<box>\<diamond>φ in v]"
            using S5Basic_4[deduction] by auto
          hence "[\<box>ψ in v]"
            using 1[deduction] by auto
        }
        hence "[\<box>(\<diamond>φ \<rightarrow> ψ) in v] ==> [φ \<rightarrow> \<box>ψ in v]"
          using CP by auto
      }
      ultimately show "[\<box>(φ \<rightarrow> \<box>ψ) in v]"
        using S5Basic_6 RN_2 vdash_properties_10 by blast
    qed

  lemma sc_eq_box_box_1[PLM]:
    "[\<box>(φ \<rightarrow> \<box>φ) \<rightarrow> (\<diamond>φ \<equiv> \<box>φ) in v]"
    proof(rule CP)
      assume 1: "[\<box>(φ \<rightarrow> \<box>φ) in v]"
      hence "[\<box>(\<diamond>φ \<rightarrow> φ) in v]"
        using S5Basic_14[equiv_lr] by auto
      hence "[\<diamond>φ \<rightarrow> φ in v]"
        using qml_2[axiom_instance, deduction] by auto
      moreover from 1 have "[φ \<rightarrow> \<box>φ in v]"
        using qml_2[axiom_instance, deduction] by auto
      ultimately have "[\<diamond>φ \<rightarrow> \<box>φ in v]"
        using ded_thm_cor_3 by blast
      moreover have "[\<box>φ \<rightarrow> \<diamond>φ in v]"
        using qml_2[axiom_instance] "T\<diamond>"
        by (rule ded_thm_cor_3)
      ultimately show "[\<diamond>φ \<equiv> \<box>φ in v]"
        by (rule "\<equiv>I")
    qed

  lemma sc_eq_box_box_2[PLM]:
    "[\<box>(φ \<rightarrow> \<box>φ) \<rightarrow> ((\<not>\<box>φ) \<equiv> (\<box>(\<not>φ))) in v]"
    proof (rule CP)
      assume "[\<box>(φ \<rightarrow> \<box>φ) in v]"
      hence "[(\<not>\<box>(\<not>φ)) \<equiv> \<box>φ in v]"
        using sc_eq_box_box_1[deduction] unfolding diamond_def by auto
      thus "[((\<not>\<box>φ) \<equiv> (\<box>(\<not>φ))) in v]"
        by (meson CP "\<equiv>I" "\<equiv>E"(3)
                  "\<equiv>E"(4) "\<not>\<not>I" "\<not>\<not>E")
    qed

  lemma sc_eq_box_box_3[PLM]:
    "[(\<box>(φ \<rightarrow> \<box>φ) & \<box>(ψ \<rightarrow> \<box>ψ)) \<rightarrow> ((\<box>φ \<equiv> \<box>ψ) \<rightarrow> \<box>(φ \<equiv> ψ)) in v]"
    proof (rule CP)
      assume 1: "[(\<box>(φ \<rightarrow> \<box>φ) & (& (()))) in
      
        assume "[
        hence "[(\<box>φ = delete) + 2")
          using oth_class_taut_5_i[equiv_lr] by auto
        moreover {
          assume "[\<box Basic2_7
          hence> ψ
            using KBasic_7[deduction] by auto
        }
        moreover {
          assume "[(\<not>(\< y (metis contraposit controi_ eutuogs3dje)
          hence "\^(\<not>φ) & \<box>( 3"
             using 1 "&E" "&I" sc_eq_box_box_2[deduction, equiv_lr]
             by metis
          hence "[\<box>((\<box>ψhtarrow<old(φ \<or> ψ) in v]"
            using KBasic_3[equiv_rl] by auto
          hence "[<      ultimately
            using KBasic_9[deduction] by auto
       }
        ultimately have "[&I" oth_class_taut_9_a
          usingbold<or>E"(1) by blast
      }
      thus "[\<diamond \<equiv> (\phi \<diamond>ψ
        using CP by auto
    qed

  rived_S5_rules_1_a
    assumes "v. [χ in v] ==>
    shows "[bold
    proof -
      have "[\<box>χ in v] \<Longrightarrow    
        using assms RM_1_b by metis
      thus "[\^ in (1
        usingoperties_10etis
    qed

  lemma derived_S5_rules_1_bMjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
    assumes "v. [\<diamond>φ \<rightarrow> ψ in v]"
    shows \<\psi in
    using derived_S5_rules_1_a all_self_eq_1 assms by blast

  lemma derived_S5_rules_2_a[PLM]:
    assumes " ohlssau__)
    shows "<><box>χ in v] ==> \^oldφ <^>\
    proof -
      have java.lang.NullPointerException
     M_2_bsyet
      thus "[ in <ghtarrow java.lang.NullPointerException
        using "B\<diamond>" vdash_properties_10tntraposition_1
    qed

  lemmaerived_S5_rules_2_b
    assumes "v. [φ \<diamond>"c
    shows java.lang.NullPointerException
_S5_rules_2_a all_self_eq_1 by blast

  lemma BFs_1[PLM]: "[(\<.<(φα (\<alphaetis d_thm_cor_4&)
    proof (rule derived_S5_rules_1_b^bold¬\<^bold>¬φ
      fix v
     
        fixbysimp
        have "α . phi α)) \<box>(φ α) in v]"
          using cqt_orig_1 by metis
        hence "[<bold>🚫(φ αn v"
          using RM_2 by metis
        moreover have "[_s_eo \^¬\<phi>" 
          using "Bjava.lang.NullPointerException
        ultimately have "[\<dia by simp
          using ded_thm_cor_3 by blast
      }
      hence "[java.lang.NullPointerException
        using "\<forall>I" by metis
      thus "[\<forall>α. (φ α))" bolI" by blast
        using cqt_orig_2[deduction] by auto
    qed
  lemmas BF = BFs_1

  lemma BFs_2[PLM]:
    java.lang.NullPointerException
    proof -
      {
        fix α
        {
           fix v
           have "[(\<forall>α. φ αjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        }
        ce(\<alpha> . φ α java.lang.NullPointerException
      }
      hence java.lang.NullPointerException
      thus ?thesis using cqt_orig_2[deduction] by metis
    qed
  lemmasφ"

  lemma BFs_3[PLM]:
    "[\<diamond>(="\phi, THEN contraposition_1[THEN iffD1], deduction]
    proof -
      have "[(\<forall>α. \<box>(\<not>(φ α))) \<rightarrow> \<box>(\<forall>α. \<diamond>\<^bold>&>& \boldb>( inv]"
        
      hence 1
        using contraposition_1 by simp
      have 2"[\<not>(. >)) \<not>(. \<not>(φ α)))) in v]"
        apply (PLM_subst_method "\<box>(\alp. \<not>(φ α))" ",
        using KBasic2_2 1 by simp+
      have "[\<not>(by show_proper
        apply (PLM_subst_method " χ ><rightarrow> (φmorhave ">exists\alpha>)<bold
         using cqt_further_2 apply metis
        using 2 by metis
      thus ?thesis
        unfolding exists_def diamond_def by auto
    qed
  lemmas "BF\<diamond>" = BFs_3

:
    "[(\<exists> α . \<diamond>(φ αSimpleExOrEn.intros))
    proof -
      have 1: "[\<box>(\<forall>α . \<not>(φ α)) \<rightarrow> (\<using 🚫
        usingby 
      have 2"[(\<exists> α . (\<not>(\<box>(\<not>(φ α))))) \<rightarrow> (\<not>(\<box>(\<forall>α. \<not>(φ α)))) in v]"
        apply (PLM_subst_method "\<not>(\<forall>α. \<box>(\<not>(φ α)))" "(\<exists> α . (\<n pply (rul cqt_wher\psi"lambdajava.lang.NullPointerException
         using cqt_further_2 apply blast
        using 1 using contraposition_1 by metis
      have java.lang.NullPointerException
        apply (PLM_subst_method "\<not>(\<box>(java.lang.NullPointerException
         using KBasic2_2 apply blast
        using 2 by assumption
      thus
        unfolding diamond_def exists_def by auto
    qed
  lemmas "CBF\<diamond>" = BFs_4

  lemma sign_S5_thm_1[PLM]:
    "[(\<exists> α. \<box>(φ α)) \<rightarrow> \<box>(\<exists> α. φ α) in v]"
    proof (rule
      assume "[\<exists> α . \<box>(φ α) in v]"
      then obtain τ where "[\<box>(φ τ) in v]"
        by (rule "\<exists>E")
      moreover {
        fix v
        assume "[φ τ in v]"
        hence "[\<exists> α . φ α in v]"
           rule<>Ijava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
      }
      ultimately show "[\<box>(\<exists> α . φ α) in v]"
        using RN_2 by blast
    qed
  lemmas Buridan = sign_S5_thm_1

  lemma sign_S5_thm_2[PLM]:
    "[\<diamond>(\<forall> α . φ α) \<rightarrow> (\<forall> α . \<diamond>(φ α)) in v]"
    proof -
      {
        fix α
        {
          fix v
          have "[(\<forall> α . φ α) \<rightarrow> φ α in v]"
            using cqt_orig_1 by metis
        }
        hence "[\<diamond>(\<forall> α . φ α) \<rightarrow> \<diamond>(φ α) in v]"
          using RM_2 by metis
      }
      hence "[\<forall> α . \<diamond>(\<forall> α . φ α) \<rightarrow> \<diamond>(φ α) in v]"
        using "\<forall>I" by metis
      thus ?thesis
        using cqt_orig_2[deduction] by metis
    qed
  lemmas "Buridan\<diamond>" = sign_S5_thm_2

  lemma sign_S5_thm_3[PLM]:
    "[\<diamond>(\<exists> α . φ α & ψ α) \<rightarrow> \<diamond>((\<exists> α . φ α) & (\<exists> α . ψ α)) in v]"
    by (simp only: RM_2 cqt_further_5)

  lemma sign_S5_thm_4[PLM]:
    "[((\<box>(\<forall> α. φ α \<rightarrow> ψ α)) & (\<box>(\<forall> α . ψ α \<rightarrow> χ α))) \<rightarrow> \<box>(\<forall>α. φ α \<rightarrow> χ α) in v]"
    proof (rule CP)
      assume java.lang.NullPointerException
      hence "[\<box>((\<forall>α. φ α \<rightarrow> ψ α) & (lambda_predicates_2_2[axiom_universalaxiom_instance
        using KBasic_3[equiv_rl] by blast
      moreover {
        fix v
        assume "[((\<forall>α. φ α \<rightarrow> ψ α) & (\<forall>α. ψ α \<rightarrow> χ α)) in v]"
         [^boldalphaphi> \^\rightarrow🚫
          using cqt_basic_9[deduction] by blast
      }
      ultimately show "[\<box>(\<forall>α. φ α \<rightarrow> χ α) in v]"
        using RN_2 by blast
    qed

  lemma sign_S5_thm_5[PLM]:
    "[((\<box>(SimpleExOrEnc.intros)
    proof (rule CP)
      assume "[java.lang.NullPointerException
      hence "[\<box>((\<forall>α. φ α \<^bold>\><> βsup>P) \^bold>= yin v]]"
        using KBasic_3[equiv_rl] by blast
      moreover {
        fix v
        assume "[((\<forall>α. φ α \<equiv> ψ α) & (\<forall>α. ψ α \<equiv> χ α)) in v]"
        hence "[(\<forall> α . φ α \<equiv> χ α) in v]"
          using cqt_basic_10[deduction] by blast
      }
      ultimately show "[\<box>(\<forall>α. φ α \<equiv> χ αru SimpleExOrEintros)
        using RN_2 by blast
    qed
  
  lemma id_nec2_1[PLM]:
    "[\<diamond>((α::'a::id_eq) = β) \<equiv> (α = β) in v]"
apply(rule "\<equiv>I"; rule CP)
     using id_nec[equiv_lr] derived_S5_rules_2_b CP modus_ponens apply blast
    using "T\<diamond>"[deduction] by auto

  lemma id_nec2_2_Aux:
    "[(\<diamond>φ) \<equiv> ψ in v] ==> [(\<not>ψ) \<equiv> \<box>(\<not>φ) in v]"
    proof -
      assume "[(\<diamond>φ) \<equiv> ψ in v]"
      moreover have "φ ψ. [(\<not>φ) \<equiv> ψ in v] d>🚫
        by PLM_solver
      ultimately show ?thesis
        unfolding diamond_def by blast
    qed

  lemma id_nec2_2[PLM]:
    "[((α::'a::id_eq) \<noteq> β) \<equiv> \<box>(α \<noteq> β) in v]"
    using id_nec2_1[THEN id_nec2_2_Aux] by auto

  lemma id_nec2_3[PLM]:
    "[( <b>
    using "T\<diamond>" "\<equiv>I" id_nec2_2[equiv_lr]
          CP derived_S5_rules_2_b by metis

  lemma exists_desc_box_1[PLM]:
    "[( []:
    proof (rule CP)
       java.lang.NullPointerException
      then obtain y where "[(yP= (\<iota>x. φ x) in v]"
        by (rule "\<exists>E")
      hence "[\<box>(yP = (\<iota>x. φ                <^bold\lparr!\rparr\^>\lparr!\rparr <>\^>box<> <>,\>java.lang.NullPointerException
        using l_identity[axiom_instance, deduction, deduction]
              cqt_1[axiom_instance] all_self_eq_2[where 'a=ν]
              modus_ponens unfolding identity_ν_def by fast
      thus "[\<exists>y. \<box>((yP) = (\<iota>x. φ x)) in v]"
        by (rule "\<exists>I")
    qed

  lemma exists_desc_box_2[PLM]:
    java.lang.NullPointerException
    using exists_desc_box_1 Buridan ded_thm_cor_3 by fast

  lemma en_eq_1[PLM]:
    "[\<diamond>{x,F} \<equiv> \<box>{x,F
    using encoding[axiom_instance] RN
          sc_eq_box_box_1 modus_ponens by blast
  lemma en_eq_2[PLM]:
    "[{x,F} \<equiv> \<box>{x,F} in v]"
    using encoding[axiom_instance] qml_2[axiom_instance] by (rule "\<equiv>I")
  lemma en_eq_3[PLM]:
    "[\<diamond>{x,F} \<equiv> {x,F} in v]"
    using encoding[axiom_instance] derived_S5_rules_2_b "\<equiv>I" "T\<diamond>" by auto
  lemma en_eq_4[PLM]:
    "[({x,F} \<equiv> {y,G}) \<equiv> (\<box>{x,F} \<equiv> \<box>{y,G}) in v]"
    by (metis CP en_eq_2 "\<equiv>I" "\<equiv>E"(1"\<equiv>E"(2))
  lemma en_eq_5[PLM]:
    "[\<box>({x,F} \<equiv> {y,G}) \<equiv> (\<box>{x,F} \<equiv> \<box>{y,G}) in v]"
    using "\<equiv>I" KBasic_6 encoding[axiom_necessitation, axiom_instance]
    sc_eq_box_box_3[deduction] "&I" by simp
  lemma en_eq_6[PLM]:
    "[({x,F} \ have "(<>(<^bold\^>\diamond\lparrE, xjava.lang.NullPointerException
    using en_eq_4 en_eq_5 oth_class_taut_4_a "\<equiv>E"(6by meson
  lemma en_eq_7[PLM]:
    "[(\<not>{x,F}) \<equiv> \<box>(\<not>{x,F}) in v]"
    using en_eq_3[THEN id_nec2_2_Aux] by blast
  lemma en_eq_8[PLM]:
    java.lang.NullPointerException
     unfolding diamond_def apply (PLM_subst_method "{x,F}" "\<not>\<not>{x,F}")
      using oth_class_taut_4_b apply simp
     apply (PLM_subst_method "{x,F}" "\<diamond>(E!, x^not>java.lang.NullPointerException
      using en_eq_2 apply simp
     using oth_class_taut_4_a by assumption
  lemma en_eq_9[PLM]:
    "[\<diamond>(\<not>{x,F}
    using en_eq_8 en_eq_7 "\<equiv>E"(5) by blast
  lemma en_eq_10[PLM]:
    "[\<A>{x,F} \<equiv> {x,F}
    apply (rule "\<equiv>I")
     using encoding[axiom_actualization, axiom_instance,
                    THEN logic_actual_nec_2[axiom_instance, equiv_lr],
                    deduction, THEN qml_act_2[axiom_instance, equiv_rl],
                    THEN en_eq_2[equiv_rl]] CP
     apply simp
    using encoding[axiom_instance] nec_imp_act ded_thm_cor_3 by blast

subsectionof 
text\label{TAO_PLM_Relations}

  lemma beta_equiv_eq_1_1[PLM]:
    assumes "IsProperInX \<phi>"
        and "IsProperInX \<psi>"
        and "\<And>x.[\<phi> (x\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) in v]"
    shows "[\<lparr>\<^bold>\<lambda> y. \<phi> (y\<^sup>P), x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>\<^bold>\<lambda> y. \<psi> (y\<^sup>P), x\<^sup>P\<rparr> in v]"
    using lambda_predicates_2_1[OF assms(1), axiom_instance]
    using lambda_predicates_2_1[OF assms(2), axiom_instance]
    using assms(3) by (meson "\<^bold>\<equiv>E"(6) oth_class_taut_4_a)

  lemma beta_equiv_eq_1_2[PLM]:
    assumes "IsProperInXY \<phi>"
        and "IsProperInXY \<psi>"
        and "\<And>x y.[\<phi> (x\<^sup>P) (y\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) (y\<^sup>P) in v]"
    shows "[\<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<phi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr>
            \<^bold>\<equiv> \<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<psi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr> in v]"
    using lambda_predicates_2_2[OF assms(1), axiom_instance]
    using lambda_predicates_2_2[OF assms(2), axiom_instance]
    using assms(3) by (meson "\<^bold>\<equiv>E"(6) oth_class_taut_4_a)

  lemma beta_equiv_eq_1_3[PLM]:
    assumes "IsProperInXYZ \<phi>"
        and "IsProperInXYZ \<psi>"
        and "\<And>x y z.[\<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P) in v]"
    shows "[\<lparr>\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z. \<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P)), x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr>
            \<^bold>\<equiv> \<lparr>\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z. \<psi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P)), x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr> in v]"
    using lambda_predicates_2_3[OF assms(1),        hence "[\lparr\^bold\lambdax <bold>\not\^><>\<lparrE,\<sup>\rparr,\^>\rparrinv"
    using lambda_predicates_2_3[OF assms(2), axiom_instance]
    using assms(3) by (meson "\<^bold>\<equiv>E"(6) oth_class_taut_4_a)

  lemma beta_equiv_eq_2_1[PLM]:
    assumes "IsProperInX \<phi>"
        and "IsProperInX \<psi>"
    shows "[(\<^bold>\<box>(\<^bold>\<forall> x . \<phi> (x\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P))) \<^bold>\<rightarrow        hencelparr<>>^<bold><>\lparrE,\^>\rparr\>rparr\bold& <>^\lambdax<\><^\diamondlparr!x<>\,^Prparr
            (\<^bold>\<box>(\<^bold>\<forall> x . \<lparr>\<^bold>\<lambda> y. \<phi> (y\<^sup>P), x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>\<^bold>\<lambda> y. \<psi> (y\<^sup>P), x\<^sup>P\<rparr>)) in v]"
     apply (rule qml_1[axiom_instance, deduction])
     apply (rule RN)
     proof (rule CP, rule "\<^bold>\<forall>I")
      fix v x
      assume "[\<^bold>\<forall>x. \<phi> (x\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) in v]"
      hence "\<And>x.[\<phi> (x\<^sup>P) \<^bold>\<equiv> \<psi> (x\    "((x<supP <bold= (y\^supP)\<bold>(y<sup>) <^bold> (\^>) \bold>rightarrow(x<sup>)<^bold>= (z\<^sup>P)) in v]"
        by PLM_solver
      thus "[\<lparr>\<^bold>\<lambda> y. \<phi> (y\<^sup>P), x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>\<^bold>\<lambda> y. \<psi> (y\<^sup>P), x\<^sup>P\<rparr> in v]"
        using assms beta_equiv_eq_1_1 by auto
     qed

  lemma beta_equiv_eq_2_2[PLM]:
    assumes "IsProperInXY \<phi>"
        and "IsProperInXY \<psi>"
    shows "[(\<^bold>\<box>(\<^bold>\<forall> x y . \<phi> (x\<^sup>P) (y\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) (y\<^sup>P))) \<^bold>\<rightarrow>
            (\<^bold>\<box>(\<^bold>\<forall> x y . \<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<phi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr>
              \<^bold>\<equiv> \<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<psi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr>)) in v]"
    apply (rule qml_1[axiom_instance, deduction])
    apply (rule RN)
    proof (rule CP, rule "\<^bold>\<forall>I", rule "\<^bold>\<forall>I")
      fix v x y
      assume "[\<^bold>\<forall>x y. \<phi> (  next
      hence "(\<And>x y.[\<phi> (x\<^sup>P) (y\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) (y\<^sup>P) in v])"
        by (meson "\<^bold>\<forall>E")
      thus "[\<lparr>\<^\<equiv  (x\<^sup>P) (<supP v"
            \<^bold>\<equiv> \<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<psi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr> in v]"
         assms beta_equiv_eq_1_2 auto
    qed

  lemma beta_equiv_eq_2_3[PLM]:
    sIsProperInXYZ \<phi"
         "IsProperInXYZ \>"
    shows "[(\<^bold>\<box>(\<^bold>\<forall> x y z . \<phi> (x\<^sup>P) (y\<^sup>P) (3)by (meson "\<^bold>\<equiv>E"(6) oth_class_taut_4_a)
            (\<^bold>\<box>(\<^bold>\<forall> x y z . \<lparr>\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z. \<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P)), x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr>
                \<^bold>\<equiv> \<lparr>\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z. \<psi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P)), x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr>)) in v]"
    apply (rule qml_1[axiom_instance, deduction])
    apply (rule RN"[(::id_eq <bold=y) \<boldrightarrow( <^> )in v]
    proof (rule CP, rule "\<^bold>\<forall>I", rule "\<^bold>\<forall>I", rule "\<^bold>\<forall>I")
      fix v x y z
      assume "[\<^bold>\<forall>x y z. \<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P) \<^bold>\<equiv> \<psi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P) in v]"
      hence "(\<And>x y z.[\<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup eq_sym=<>
        by (meson "\<^bold>\<forall>E")
      <sup>P \<^bold> y\^sup>P) <bold\<rightarrow> (\^sup
              \<^\close>
        assms beta_equiv_eq_1_3  auto
    qed

  lemma beta_C_meta_1[PLM]:
    assumes "IsProperInX \<phi>"
    shows "[\<lparr>\<^bold>\<lambda> y. \<phi> (y\<^sup>P), x\<^sup>P\<rparr> \<^bold>\<lemma all_self_eq_1PLM:
    using lambda_predicates_2_1[OF assms, axiom_instance] by auto

  lemma beta_C_meta_2[PLM]:
    assumes "IsProperInXY \<phi>"
    shows "[\<lparr>\<^bold>\<lambda>\<^sup>2 (\<lambda> x y. \<phi> (x\<^sup>P) (y\<^sup>P)), x\<^sup>P, y\<^sup>P\<rparr> \<^bold>\<equiv> \<phi> (x\<^sup>P) (y\<^sup>P) in v]"
    using lambda_predicates_2_2[OF assms, axiom_instance] by auto

  lemma beta_C_meta_3[PLM]:
    assumes "IsProperInXYZ \<phi>"
    shows "[\<lparr>\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z. \<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P)), x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr> \<^bold>\<equiv> \<phi> (x\<^sup>P) (y\<^sup>P) (z\<^sup>P) in v]"
    using lambda_predicates_2_3[OF assms, axiom_instance] by auto

  lemma relations_1[PLM]:
    assumes "IsProperInX \<phi>"
    shows "[\<^bold>\<exists> F. \<^bold>\<box>(\<^bold>\<forall> x. \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<phi> \nu :
    using assms apply - by PLM_solver

  lemma relations_2[PLM]:
    assumes "IsProperInXY            subgoal unfolding identity_defs by (ule SimpleExOrEnc.intros)
    shows "[\<^bold>\<exists> F. \<^bold>\<box>(\<^bold>\<forall> x y. \<lparr>F,x\<^sup>P,y\<^sup>P\<rparr> \<^bold>\<equiv       PLM.d_eq_obj_1
    using assms apply - by PLM_solver

  lemma relations_3[PLM]:
    assumes "IsProperInXYZ \<phi>"
    shows "[\<^bold>\<exists> F. \<^bold>\<box>(\<^bold>\<forall> x y z. \<lparr>F,x\<^sup>P,y\<^sup>P,z\<^sup>P\<rparr> \<^bold>        assume  "[\<>!>rparr <bold>& \<>A,\<au'\rparr \^old&\<bold\<box>(<^bold> v]
    using assms apply - by PLM_solver

  lemma prop_equiv[PLM]:
    shows "[\<bold><forall> x .(\lbrace>\^sup>PF      using PLM.id_eq_obj_3
    proof (rule CP)
      assume 1: "[\<^bold>\<forall>x. \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,G\<rbrace> in v]"
      {
        fix x
        have "[\<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,G\<rbrace> in v]"
          using 1 by (rule "\<^bold>\<forall>E")
        hence "[\<^bold>\<box>(\<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,G\<rbrace>) in v]"
          using PLM.en_eq_6 "\<^bold>\<equiv>E"(1) by blast
      }
      hence "[\<^bold>\<forall>x. \<^bold>\<box>(\<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,G\<rbrace>) in v]"
        by (rule "\<^bold>\<forall>I")
  proof(uleCPjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
defs
        by (rule BF[deduction])
    qed

  lemma propositions_lemma_1[PLM]:
    "[\<^bold>\<lambda>\<^sup>0 \<phi> \<^bold>= \<phi> in v]"
    using lambda_predicates_3_0[axiom_instance] .

  lemma propositions_lemma_2[PLM]:
    "[\<^bold>\<lambda>\<^sup>0 \<phi> \<^bold>\<equiv> \<phi> in v]"
    using lambda_predicates_3_0[axiom_instance, THEN id_eq_prop_prop_8_b[deduction]]
    apply (rule l_identity[axiom_instance, deduction, deduction])
    by PLM_solver

  lemma propositions_lemma_4[PLM]:
    assumes "\<And>x.[\<^bold>\<A>(\<phi> x \<^bold>\<equiv> \<psi> x) in v]"
    shows "[(\<chi>::\<kappa>\<Rightarrow>\<o>) (\<^bold>\<iota>x. \<phi> x) \<^bold>= \<chi> (\<^bold>\<iota>x. \<psi> x) in v]"
    proof -
      have "[\<^bold>\<lambda>\<^sup>0 (\<chi> (\<^bold>\<iota>x. \<phi> x)) \<^bold>= \<^bold>\<lambda>\<^sup>0 (\<chi> (\<^bold>\<iota>x. \<psi> x)) in v]"
        using assms lambda_predicates_4_0[axiom_instance]
        by blast
      hence "[(\<chi> (\<^bold>\<iota>x. \<phi> x)) \<^bold>= \<^bold>\<lambda>\<^sup>0 (\<chi> (\<^bold>\<iota>x. \<psi> x)) in v]"
        using propositions_lemma_1[THEN id_eq_prop_prop_8_b[deduction]]
              id_eq_prop_prop_9_b[deduction] "\<^bold>&I"
        by blast
      thus ?thesis
        using propositions_lemma_1 id_eq_prop_prop_9_b[deduction] "\<^bold>&I"
        by blast
    qed

  lemma propositions[PLM]:
    "[\<^bold>\<exists> p . \<^bold>\<box>(p \<^bold>\<equiv> p') in v]"
    by PLM_solver

  lemma pos_not_equiv_then_not_eq[PLM]:
    "[\<^bold>\<diamond>(\<^bold>\
    unfolding diamond_def
    roof (
      assume "[F \<^bold>= G in v]"
      thus "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<not>(\<^bold>\<forall>x. \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>G,x\<^sup>P\<rparr>))) in v]"
        apply (rule l_identity[axiom_instance, deduction, deduction])
        by PLM_solver
    qed

  lemma thm_relation_negation_1_1[PLM]:
    "[\<lparr>F\<^sup>-, x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>F, x\<^sup>P\<rparr> in v]"
    unfolding propnot_defs
    apply (ule lambda_predicates_2_1[axiom_instance)
    by show_proper

  lemma thm_relation_negation_1_2[PLM]:
    "[\<lparr>F\<^sup>-, x\<^sup>P, y\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>F, x\<^sup>P, y\<^sup>P\<rparr> in v]"
    unfolding propnot_defs
    apply (rule lambda_predicates_2_2[axiom_instance])
    by show_proper

  lemma thm_relation_negation_1_3[PLM]:
    "[\<lparr>F\<^sup>-, x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr> \<^d\equiv> \<boldld<not><lparr> \<sup> \^supP, z\<^sup>P\<rparr> in v]"
    unfolding propnot_defs
    apply (rule lambda_predicates_2_3[axiom_instance])
    by show_proper

 thm_relation_negation_2_1
    "[(\<^bold>\<not>\<lparr>F\<^sup>-, x\<^sup>P\<rparr>) \<^bold>\<equiv> \<lparr>F, x\<^sup>P\<rparr> in v]"
    using thm_relation_negation_1_1[THEN oth_class_taut_5_d[equiv_lr]]
    apply - by PLM_solver

_relation_negation_2_2[PLM]:
    "[(\<^bold>\<not>\<lparr>F\<^sup>-, x\<^sup>P, y\<^sup>P\<rparr>) \<^bold>\<equiv> \<lparr>F, x\<^sup>P, y\<^sup>P\<rparr> in v]"
    using thm_relation_negation_1_2[THEN oth_class_taut_5_d[equiv_lr]]
    apply - by PLM_solver

  lemma thm_relation_negation_2_3[PLM]:
    "[(\<^bold>\<not>\<lparr>F\<^sup>-, x\<^sup>P,y\^sup>P, z\<^upPrparr \<^bold>\<equiv> \<lparr>F, x\<^sup>P, y\<^sup>P, z\<^sup>P\<rparr> in v]"
    using thm_relation_negation_1_3[THEN oth_class_taut_5_d[equiv_lr]]
    apply-yPLM_solver

  lemma thm_relation_negation_3[PLM]:
    "[(p)\<^sup>- \<^bold>\<equiv> \<^bold>\<not>p in v]"
    unfolding propnot_defs
    usingpropositions_lemma_2 by simp

  lemma thm_relation_negation_4[PLM]:
    \boldnot((p::\<o>)\<^sup>-)) \<^bold>equiv p in v]"
    using thm_relation_negation_3[THEN oth_class_taut_5_d[equiv_lr]]
    apply - by PLM_solver

  lemma thm_relation_negation_5_1[PLM]:
    "[(F::\<Pi>\<^sub>1) \<^bold>\<noteq> (F\<^sup>-) in v]"
    using id_eq_prop_prop_2[deduction]
          l_identity[where \<phi>="\<lambda> G . \<lparr>G,x\<^sup>P\<rparr>         l_identity[where \<hi"<ambda>\alpha .(<bold\iota> .<hi  <bold=(alpha
                      deduction, deduction]
          oth_class_taut_4_a thm_relation_negation_1_1 "\<^bold>\<equiv>E"(5)
          oth_class_taut_1_b modus_tollens_1 CP
    by meson

  lemma thm_relation_negation_5_2[PLM]:
    [(F::<Pi>\<^sub>2) \<^old>\<noteq> (F\^sup>-) in v]"
    using id_eq_prop_prop_5_a[deduction]
          [ <=\lambda  .\<lparrG,\<sup>,y\<^up>P\ \bold>\<equiv> \<lparr>F\<^sup>-,x\<^sup>P,y\^sup>P
                      deduction, deduction
          oth_class_taut_4_a thm_relation_negation_1_2 "\<^bold>\<equiv>E"(5)
          oth_class_taut_1_b modus_tollens_1 CP
    by meson

  lemma thm_relation_negation_5_3PLM]:
    "[(F::\<Pi>\<^sub>3) \<^bold>\<noteq> (F\<^sup>-) in v]"
    using id_eq_prop_prop_5_b[deduction]
          l_identity[where \<phi>="\<lambda> G . \<lparr>G,x\<^sup>P,y\<^sup>P,z\<^sup>P\<rparr> \
                     axiom_instance, deduction, deduction]
          oth_class_taut_4_a thm_relation_negation_1_3 "\<^bold>\<equiv>E"(5)
          oth_class_taut_1_b modus_tollens_1 CP
    by meson

  lemma thm_relation_negation_6[PLM]:
    (<> <><noteq> (p\<^sup>-) in v]"
    using id_eq_prop_prop_8_b[deduction]
          [where \<phi>="\<lambda> G . G \<^bold>\<equiv> (p\<^sup>-)", axiom_instance,
                      deduction ]
oth_class_taut_4_a  "\<^bold\<equiv>E"(5)
          oth_class_taut_1_b modus_tollens_1 CP
    by meson

  lemma thm_relation_negation_7[PLM]:
    "[((p::\<o>)\<^sup>-) \<^bold>= \<^bold>\<not>p in v]"
    unfolding propnot_defs using propositions_lemma_1 by simp

  lemma thm_relation_negation_8[PLM]:
    "[(p::\<o>) \<^bold>\<noteq> \<^bold>\<not>p in v]"
    unfolding propnot_defs 
    using id_eq_prop_prop_8_b[deduction]
          l_identity[where
                      deduction, deduction]
          oth_class_taut_4_a oth_class_taut_1_b
          modus_tollens_1 CP
    by meson

  lemma thm_relation_negation_9[PLM]:
    "[((p::\<o>) \<^bold>= q) \<^bold>\<rightarrow> ((\<^bold>\<not>p) \<^bold>= (\<^bold>\<not>q)) in v]"
    using l_identity[where \<alpha>="p" and \<beta>="q" and \<phi>="\<lambda> x . (\<^bold>\<not>p) \<^bold>= (\<^java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                      axiom_instance, deduction]
          id_eq_prop_prop_7_b using CP modus_ponens by blast

  lemma thm_relation_negation_10[PLM]:
    "[((p::\<o>) \<^bold>= q) \<^bold>\<rightarrow> ("<^bold\<diamond\^oldexists x . ((\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>) \<^bold>& (\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>))) in v]"
    using l_identity[where \<alpha>="p" and \<beta>="q" and \<phi>="\<lambda> x . (p\<^sup>-) \<^bold>= (x\<^sup>-)",
                      axiom_instance, deduction]
          id_eq_prop_prop_7_b usingCPmodus_ponens blast

  lemma thm_cont_prop_1[PLM]:
    "[NonContingent (F::\<Pi>\<^sub>1) \<^bold>\<equiv> NonContingent (F      unfolding Necessary_defs L_defapply ruleRN, rule "\<bold<>)
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[NonContingent F in v]"
      hence "[\<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>) \<^bold><or> <bold>\<^bold>\<forall>x.\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr
        unfolding NonContingent_def Necessary_defs Impossible_defs .
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) in v]"
        apply -
         (LM_subst_method<>  .<>Fx<><>""<lambda   \^bold\not<>F<sup-x\<supP\rparr"
        using thm_relation_negation_2_1[equiv_sym] by auto
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<lparr>F\<^sup>-,x\<^sup>P\<rparr>) in v]"
        apply -
        apply (PLM_subst_goal_method
               "\<lambda> \<phi> . \<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<phi> x)" "\<lambda> x . \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>")
        using thm_relation_negation_1_1[equiv_sym] by auto
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<lparr>F\<^sup>-,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<"(<bold\forall><bold\forall\>\>\> >bold>\<alpha>.phi\>in]
        by (rule oth_class_taut_3_e[equiv_lr])
      thus "[NonContingent (F\<^sup>-) in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs .
    next
      assume "[NonContingent (F\<^sup>-) in v]"
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<lparr>F\<^sup>-,x\<^sup>P\<rparr>) in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs
        by (rule oth_class_taut_3_e[equiv_lr])
      hence "[\<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F\<^sup>-,x\<^sup>P\<rparr>) in v]"
      assume "\<>([\^bold\exists \alpha>. \<alpha>\<sup>)\^bold= (\^old\<>x.\phi> x)inv \<> (<^<>.(<><>)^> \<^><>x  <psi x) v)
        apply (PLM_subst_method  "\<lambda> x . \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>" "\<lambda> x . \<lparr>F,x\<^sup>P\<rparr>")
        using thm_relation_negation_2_1 by auto
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) in v]"
        apply -
        apply (PLM_subst_method "\<lambda> x . \<lparr>F\<^sup>-,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>")
        using thm_relation_negation_1_1 by auto
      thus "[NonContingent F in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs .
    qed

  lemma thm_cont_prop_2[PLM]:
    "[Contingent F \<^bold>\<equiv> \<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr>) \<^bold>& \<^bold>\<diamond>(\<^bold>\<exists> x . \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[Contingent F in v]"
      hence "[\<^bold>\<not>(\<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x.\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)) in v]"
        unfolding Contingent_def Necessary_defs Impossible_defs .
      hence "[(\<^bold>\<not>\<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>)) \<^bold>& (\<^bold>\<not>\<^bold>\<box>(\<^bold>\<forall>x.\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)) in v]"
        rule oth_class_taut_6_d[equiv_lr])
      hence "[(\<^bold>\<diamond>\<^bold>\<not>(\<^bold>\<forall>x.\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)) \<^bold>& (\<^bold>\<diamond>\<^bold>\<not>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>)) in v]"
        using KBasic2_2[equiv_lr] "\<^bold>&I" "\<^bold>&E" by meson
      thus "[(\<^bold>\<diamond>(\<^bold>\<      thenobtaintain here[Contingent P \<^bold>& P\^bold>= F in v]"
        unfolding exists_def apply -
        apply (PLM_subst_method "\<lambda> x . \<lparr>F,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparrultimately show "[\^bold>\<not>(\<^>\<exists   PLM_solver
        using oth_class_taut_4_b by auto
    next
      assume "[(\<^bold>\<diamond>(\<^bold>\<exists> x.\<lparr>      hence"[NonContingent F in v]"
hence "[(\^bold>\<diamond>\<^bold>\<not>(\<^bold>\forall>x\<bold\<not\<>F,x\<^sup>P\<rparr>)) \<^bold>&</span> (\<^bold>\diamond\^bold>\<not>(\bold>\<forall>x.\<lparr>F,x\^>\rparr) in v]"
        unfolding exists_def apply -
        apply (PLM_subst_goal_method
               "\<lambda> \<phi> .        java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
        using oth_class_taut_4_b[equiv_sym] by auto
       [(\^>\<not\<^bold><box>(\<^bold>\<forall>x.\<lparr>F,x\^>P\rparr>)) \<^old>& (\<^bold>\not\<bold\<>(\<^bold>\forall>x\<^>\<not>\<lparr>F,\^sup\rparr)  v]"
        using KBasic2_2[equiv_rl] "\<^bold>&I" "\<^bold>&E" by meson
      hence "[\<^bold>\<not>(\<^bold>\<box>(\<^bold>\<forall>x.\<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<forall>x.\<^bold>\<
        by (rule oth_class_taut_6_d[equiv_rl])
      thus "[Contingent F in v]"
        unfolding Contingent_def Necessary_defs Impossible_defs .
    qed

  lemma thm_cont_prop_3[PLM]:
    "[Contingent (F::\<Pi>\<^sub>1) \<^bold>\<equiv> Contingent (F\<^sup>-) in v]"
    using thm_cont_prop_1
    unfolding NonContingent_def Contingent_def
    by (rule oth_class_taut_5_d[equiv_lr])

  lemma lem_cont_e[PLM]:
    "[\<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<diamond>(\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>))) \<^bold>\<equiv> \<^bold>\<diamond>(\<^bold>\<exists> x . ((\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) \<^bold>& \<usingthm_noncont_e_e_4 "\bold>&Iyauto
    proof -
      have "[\<^bold>\<diamond>(\<^bold\<exists> x . \<lparrFx\supP\<rparr> \<^bold>& (\<^bold>\<diamond>(\<^bold>\<not>\<lparrF,x\<>P\<rparr>))) in v]
             <\<exists> x . \<^bold>\<diamond>(\<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparrFx<sup><))in java.lang.StringIndexOutOfBoundsException: Index 166 out of bounds for length 166
        using "BF\<^bold>\<diamond>"[deduction] "CBF\<^bold>\<diamond>"[deduction] by fast
      also have "... = [\<^bold>\<exists> x . (\<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)) in v]"
        apply (PLM_subst_method
               "\<lambda> x . \<^bold>\<diamond>(\<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>))"
               \<> x.\^old\diamond>\lparrrr\^upP<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>F,x\sup><>))
        using S5Basic_12 by auto
      also have "... = [\<^bold>\<exists> x . \<^bold>\<diamond>(\<^bold>\<not>\<lparr>,\^>\& \<^bold>\<diamond>\<lparr>F,x\^up<rparr n]"
        apply (PLM_subst_method
               >x .\bold\<><lparrF,\<^>P<rparr>\^bold& \bold\diamond>(\<^bold><not>\<parrFx<supP\rparr)"
               "lambda> x . \<^bold>\<diamond>(\<^bold>\not\<lparr>F,x\^sup>P<parr)\<^bold>& \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr>")
        using oth_class_taut_3_b by auto
      alsohave".. \<bold><xists>x . \<^bold>\<diamond>((\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) \<^bold>&an> \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr>) in v]"
        apply (lemma thm_cont_propos_3java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
               "\<lambda> x . \<^bold>\<diamond>(\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) \<^bold>& \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr>"
               "\<lambda> x . \<^bold>\<diamond>((\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) \<^bold>& \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr>)")
        using S5Basic_12[equiv_sym] by auto
      also have "... = [\<^bold>\<diamond> (\<^bold>\<exists> x . ((\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>) \<^bold>& \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr>)) in v]"      [Impossible(\<sub0<>- in v]"
        using "CBF\<^bold>\<diamond>"[deduction] "BF\<^bold>\<diamond>"[deduction] by fast
      finally show ?thesis using "\<^bold>\<equiv>I" CP by blast
    qed

  lemma lem_cont_e_2[PLM]:
    "[\<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\rparr\^old <bold\<diamond>(\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)) \<^bold>\<equiv> \<^bold>\<diamond>(\^ld\>  <>\<^sup>-,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>)) in v]"
    apply (PLM_subst_method "\<lambda> x . \<lparr>F,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>")
     using thm_relation_negation_2_1[equiv_sym] apply simp
    apply (PLM_subst_method "\<lambda> x . \<^bold>
     using thm_relation_negation_1_1[equiv_sym] apply simp
    using lem_cont_e by simp

  lemma thm_cont_e_1[PLM]:
    "[\<^bold>\<diamond>(\<^bold>\<exists> x . ((\<^bold>\<not>\<lparr>E!x\^>\<rparr>) \<^bold>& (\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>))) in v]"
     m_cont_e[reF"!" equiv_lr] qml_4[axiom_instance,conj1]
    by blast

  lemma thm_cont_e_2[PLM]:
    "Contingent(!)inv"
    using thm_cont_prop_2[equiv_rl] "\<^bold>&I" qml_4[axiom_instance, conj1]
          KBasic2_8eduction, OF sign_S5_thm_3[deduction], conj1]
          KBasic2_8[deduction, OF sign_S5_thm_3[deduction, OF thm_cont_e_1], conj1]
    by fast

  lemma thm_cont_e_3[PLM]:
    "[Contingent (E!\<^sup>-) in v]"
    using thm_cont_e_2 thm_cont_prop_3[equiv_lr] by blast

  lemma thm_cont_e_4[PLM]:
    "[\<^bold>\<exists> (F::\<Pi>\<^sub>1) G . (F \<^bold>\<noteq> G \<^bold>& Contingent F \<^bold>&> Contingent G) in v]"
    apply (rule_tac \<alpha>="E!" in "\<^bold>\<exists>I", rule_tac \<alpha>="E!\<^sup>-" in "\<^bold>\<exists>I")
    using thm_cont_e_2 thm_cont_e_3 thm_relation_negation_5_1 "\<^bold>&I" by auto

  context
  begin
    qualified definition L where "L \<equiv> (\<^bold>\<lambda> x . \<lparr>E!, x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<lparr>E!, x\<^sup>P\<rparr               simp
    
    lemma thm_noncont_e_e_1[PLM]:
      "[Necessary L in v]"
      unfolding Necessary_defs L_def apply (rule RN, rule "\<^bold>\<forall>I")
      apply (rule lambda_predicates_2_1[axiom_instance, equiv_rl])
        apply show_proper
      using if_p_then_p .

    lemma thm_noncont_e_e_2[PLM]:
      "[Impossible (L\<^sup>-) in v]"
      unfolding Impossible_defs L_def apply (rule RN, rule "\<^bold>\<forall>I")
      apply (rule thm_relation_negation_2_1[equiv_rl])
      apply (rule lambda_predicates_2_1[axiom_instance, equiv_rl])
       apply show_proper
      using if_p_then_p .

    lemma thm_noncont_e_e_3[PLM]:
      "[NonContingent (L) in v]"
      unfoldingNonContingent_def using thm_noncont_e_e_1
      by (rule "\<^bold>\<or>I"(1))

    lemma thm_noncont_e_e_4[PLM]:
      "[NonContingent (L\<^sup>-) in v]"
      unfolding NonContingent_def using thm_noncont_e_e_2
      by (rule "\<^bold>\<or>I"(2))

    lemma thm_noncont_e_e_5[PLM]:
      "[\<^bold>\<exists> (F::\<Pi>\<^sub>1) G . F \<^bold
      apply (rule_tac \<alpha>="L" in "\<^bold>\<exists>I", rule_tac \<alpha>="L\<^sup>-" in "\<^bold>\<exists>I")
      using "\<^bold>\<exists>I" thm_relation_negation_5_1 thm_noncont_e_e_3
            thm_noncont_e_e_4 "\<^bold>&I"
      by simp


  lemma four_distinct_1[PLM]:
    "[NonContingent (F::\<Pi>\<^sub>1) \<^bold>\<rightarrow> \<^bold>\<not>(\<^bold>\<exists> G . (Contingent G \<^bold>& G \<^bold>= F)) in     using logic_actual_nec_4[axiom_instance
    proof (rule CP)
      assume "[NonContingent F in v]"
      hence "[\<^bold>\<not>(Contingent F) in v]"
        unfolding NonContingent_def Contingent_def
        apply - by PLM_solver
      moreover {
         assume "[\<^bold>\<exists> G . Contingent G \<^bold>& G \<^bold>= F in v]"
         then obtain P where "[Contingent P unfoldingtlyTrue_defgentlyFalse_def
          \^>\<exists>E")
         F in v]"
           using "\<^bold>&E" l_identity[axiom_instance, deduction, deduction]
           by blast
      
      ultimately show "[\<^bold>\<not>(\<^bold>\<exists>G. Contingent G \<^bold>& G \<^bold>= F) in v]"
        using modus_tollens_1  lemma existentialPLM,LM_intro]:
    qed

           "tingentlyFalse^sub0 in v]"
    "[Contingent (F::\Pi><sub>1 <bold\rightarrow> \^old>not>\<^bold>\<exists> G . (NonContingent G \  lemmanstantiation_,PLM_elim_st]java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
    proof (rule CP)
      assume "[Contingent F in v]"
      hence "[\<^bold>\<not>(NonContingent F) in v]"
        unfolding NonContingent_def Contingent_def
        apply - by PLM_solver
      moreover {
         assume "[\<^bold>\<exists> G . NonContingent G \<^bold>& G \<^bold>= F in v]"
         then obtain P where "[NonContingent P \<^bold>& P \<^bold>= F in v]"
          by (rule "\<^bold>\<exists>E")
         hence "[NonContingent F in v]"
           using "\<^bold>&E" l_identity[axiom_instance, deduction, deduction]
           by blast
      }
      ultimately show "[\<^bold>\<not>(\<^bold>\<exists>G. NonContingent G \<^bold>& G \<^bold>= F) in v]"
        using modus_tollens_1 CP by blast
    qed

    lemma four_distinct_3[PLM]:
      "[L \<^bold>\<noteq> (L\<^sup>-) \<^bold>& L \<^bold>\<noteq> E! \<^bold>& L \<^bold>\<noteq> (E!\<^sup>-) \<^bold>& (L\<^sup>-) \<^bold>\<noteq> E!
        \<^bold>& (L\<^sup>-) \<^bold>\<noteq> (E!\<^sup>-) \<^bold>& E! \<^bold>\<noteq> (E!\<^sup>-) in v]"
      proof (rule "\<^bold>&I")+
        show "[L \<^bold>\<noteq> (L\<^sup>-) in v]"
        by (rule thm_relation_negation_5_1)
      using by auto
        {
           [L<bold= E! in v]"
          hence "[NonContingent L \<^bold>& L \<^bold>= E! in v]"
using <bold&I" by auto
          hence "[\<^bold>\<exists> G . NonContingent G \<^bold>& G \<^bold>= E! in v]"
            using thm_noncont_e_e_3 "\<^bold>&I" "\<^bold>\<exists>I" by fast
        }
        thus "[L \<^bold>\<noteq> E! in v]"
          using four_distinct_2[deduction, OF thm_cont_e_2]
                modus_tollens_1 CP
          by blast
      next
        {
          assume "[L \<^bold>= (E!\<^sup>-) in v]"
          hence "[NonContingent L \<^bold>& L \<^bold>= (E!\<^sup>-) in v]"
            using thm_noncont_e_e_3 "\<^bold>&I" by auto
          :<><>.\phi x\<><rightarrow<bold>\><>xinv"
            using thm_noncont_e_e_3 "\<^bold>&I" "\<^bold>\<exists>I" by fast
        }
        thus "[L \<^bold>\<noteq> (E!\<^sup>-) in v]"
          using four_distinct_2[deduction, OF thm_cont_e_3]
                modus_tollens_1 CP
          by blast
      next
        {
          assume "[(L\<^sup>-) \<^bold>= E! in v]"
          hence "[NonContingent (L\<^sup>-) \<^bold>& (L\<^sup>-) \<^bold>= E! in v]"
            using thm_noncont_e_e_4 "\<^bold>&I" by auto
          hence "[\<^bold>\<exists> G . NonContingent G \<^bold>& G \<^bold>= E! in v]"
            using thm_noncont_e_e_3 "\<^bold>&I" "\<^bold>\<exists>I" by fast
        
        thus "[(L\<^sup>-) \<^bold>\<noteq> E! in v]"
          using four_distinct_2[java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                modus_tollens_1 CP
          by blast
      next
        {
          assume "[(L\<^sup>-) \<^bold>= (E!\<^sup>-) in v]"
          hence "[NonContingent (L\<^sup>-) \<^bold>& (L\<^sup>-) \<^bold>= (E!\<^sup>-) in v]"
            using thm_noncont_e_e_4 "\<^bold>&I" by auto
          \<exists> G . NonContingent G \<^bold>& G \<^bold>= (E!\<^sup>-) in v]"
            using thm_noncont_e_e_3 "\<^bold>&I" "\<^bold>\<exists>I" by fast
        }
        thus "[(L\<^sup>-) \<^bold>\<noteq> (E!\<^sup>-) in v]"
          using four_distinct_2[deduction, OF thm_cont_e_3]
                modus_tollens_1 CP
          by blast
      
        show "[E! \<^bold>\<noteq> (E!\<^sup>-) in v]"
          "[\<^bold>\<A>(<^old\<forall>\<alpha><^ub> <alpha>\<^sub> \<lpha>\<sub>3 \alpha\<^sub>.\<bold\<>\<hi \<alpha>\<sub1sub2 \<><^ub>3 \<>\<^sub>4) \<bold>>\<> <phi <alpha>\<sub1\alpha\<sub> alpha\sub3<>\sub4) in v]"
      qed
  end

  lemma thm_cont_propos_1[PLM]:
    "[NonContingent (p::\<o>) \<^bold>\<equiv> NonContingent (p\<^sup>-) in v]"
     \^>\<quivI;ruleCP)
      assume "[NonContingent p in v]"
      hence "[\<^bold>\<box>p \<^bold>\<or> \<^bold>\<box>\<^bold>\<not>p in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs .
      hence "[\<^bold>\<box>(\<^bold>\<not>(p\<^sup>-)) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<not>p) in v]"
        apply -
        apply (PLM_subst_method "p" "\<^bold>\<not>(p\<^sup>-)")
        using thm_relation_negation_4[equiv_sym] by auto
      hence "[\<^bold>\<box>(\<^bold>\<not>(p\<^sup>-)) \<^bold>\<or> \<^bold>\<box>(p\<^sup>-) in v]"
        apply -
        apply (PLM_subst_goal_method "\<lambda>\<phi> . \<^bold>\<box>(\<^bold>\<not>(p\<^sup>-)) \<^bold>\<or> \<^bold>\<box>(\<phi>)" "\<^bold>\<not>p")
        using thm_relation_negation_3[equiv_sym] by auto
      hence "[\<^bold>\<box>(p\<^sup>-) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<not>(p\<^sup>-)) in v]"
        by (rule oth_class_taut_3_e[equiv_lr])
      thus "[NonContingent (p\<^sup>-) in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs .
    next
      assume "[NonContingent (p\<^sup>-) in v]"
      hence "[\<^bold>\<box>(\<^bold>\<not>(p\<^sup>-)) \<^bold>\<or> \<^bold>\<box>(p\<^sup>-) in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs
        by (rule oth_class_taut_3_e[equiv_lr])
      hence "[\<^bold>\<box>(p) \<^bold>\<or> \<^bold>\<box>(p\<^sup>-) in v]"
        apply -
        apply (PLM_subst_goal_method  "\<lambda>\<phi> . \<^bold>\<box>\<phi> \<^bold>\<or> \<^bold>\<box>(p\<^sup>-)" "\<^bold>\<not>(p\<^sup>-)")
        using thm_relation_negation_4 by auto
      hence "[\<^bold>\<box>(p) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<not>p) in v]"
        apply -
        apply (PLM_subst_method "p\<^sup>-" "\<^bold>\<not>p")
        using thm_relation_negation_3 by auto
      thus "[NonContingent p in v]"
        unfolding NonContingent_def Necessary_defs Impossible_defs .
    qed

  lemma thm_cont_propos_2[PLM]:
    "[Contingent p \<^bold>\<equiv> \<^bold>\<diamond>p \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>p) in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      t]
      hence "[\<^bold>\<not>(\<^bold>\<box>p \<^bold>\<or> \<^bold>\ox(\<oldld\<>p)) in v]"
        unfolding Contingent_def Necessary_defs Impossible_defs .
      hence "[(\<^bold>\<not>\<^bold>\<box>p) \<^bold>& (\<^bold>\<not>\<^bold>\<box>(\<^bold>\<not>p)) in v]"
        by (rule oth_class_taut_6_d[equiv_lr])
      hence "[(\<^bold>\<diamond>\<^bold>\<not>(\<^bold>\<not  lemma closure_act_3[PLM]:
        using KBasic2_2[equiv_lr] "\<^bold>&I" "\<^bold>&E" by meson
      thus "[(\<^bold>\<diamond>p) \<^bold>& (\<^bold>\<diamond>(\<^bold>\<not>p)) in v]"
        apply - apply PLM_solver
        apply (PLM_subst_method "\<^bold>\<not>\<^bold>\<not>p" "p")
        using oth_class_taut_4_b[equiv_sym] by auto
    next
      assume "[(\<^bold>\<diamond>p) \<^bold>& (\<^bold>\<diamond>\<^bold>\<not>(p)) in v]"
      hence "[(\<^bold>\<diamond<><not>(\<^bold>\<not>p)) \<^bold>& (\<^bold>\<diamond>>>p"
        apply - apply   lemma closure_act_4_b[LM:
        applyPLM_subst_method p "\<bold>\not>\<bold\<otp)
        using oth_class_taut_4_b by auto
      hence "[(\<^bold>\<not>\<^bold>\<box>p) \<^bold>& (\<^bold>\<not>\<^bold>\<box>(\<^bold>\<not>p)) in v]"
        KBasic2_2equiv_rl \^bold>I""\<bold>E"bymeson
      hence "[\<^bold>\<not>(\<^bold>\<box>(p) \<^bold>\<or> \<^bold>\<box>(\<^bold>\<not>p)) in v]"
        by (rule oth_class_taut_6_d[equiv_rl])
      thus "[Contingent p in v]"
        unfolding Contingent_def Necessary_defs Impossible_defs .
    qed

  lemma thm_cont_propos_3[PLM]:
    "[Contingent (p::\<o>) \<^bold>\<equiv> Contingent (p\<^sup>-) in v]"
    using thm_cont_propos_1
    unfolding NonContingent_def Contingent_def
    by (rule oth_class_taut_5_d[equiv_lr])

  context
  begin
    private definition p\<^sub>0 where
      "p\<^sub>0 \<equiv> \<^bold>\<forall>x. \<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<lparr>E!,x\<^sup>P\<rparr>"

    lemma thm_noncont_propos_1[PLM]:
      "[Necessary p\<^sub>0 in v]"
      unfolding Necessary_defs p\<^sub>0_def
      apply (rule RN, rule "\<^bold>\<forall>I")
      using if_p_then_p .

    lemma thm_noncont_propos_2[PLM]:
      "[Impossible (p\<^sub>0\<^sup>-) in v]"
      unfolding Impossible_defs
      apply (PLM_subst_method "\<^bold>\<not>p\<^sub>0" "p\<^sub>0\<^sup>-")
       using thm_relation_negation_3[equiv_sym] apply simp
      apply (PLM_subst_method "p\<^sub>0" "\<^bold>\<not>\<^bold>\<not>p\<^sub>0")
       using oth_class_taut_4_b apply simp
      using thm_noncont_propos_1 unfolding Necessary_defs
      by simp

    lemma thm_noncont_propos_3[PLM]:
      "NonContingent (p\
      unfolding NonContingent_def using thm_noncont_propos_1
      by (rule "\<^bold>\<or>I"(1))

    lemma thm_noncont_propos_4[PLM]:
      "[NonContingent (p\<^sub>0\<^sup>-) in v]"
      unfolding NonContingent_def using thm_noncont_propos_2
      by (rule "\<^bold>\<or>I"(2))

    lemma thm_noncont_propos_5[PLM]:
      "<bold>\exists>(p::<> q .p <bold><noteq> q \^old>& NonContingent p \^bold&NonContingentqin v]"
      apply (rule_tac \<alpha>="p\<^sub>0" in "\<^bold>\<exists>I", rule_tac \<alpha>="p\<^sub>0\<^sup>-" in "\<^bold>\<exists>I")
      using "\<^bold>\<exists>I" thm_relation_negation_6 thm_noncont_propos_3
            thm_noncont_propos_4 "\<^bold>&I" by simp

    private definition q\<^sub>0 where
      "q\<^sub>0 \<equiv> \<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)"

    lemma basic_prop_1[PLM]:
      "[\<^bold>\<exists> p . \<^bold>\<diamond>p \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>p) in v]"
      apply (rule_tac \<alpha>="q\<^sub>0" in "\<^bold>\<exists>I") unfolding q\<^sub>0_def
      using qml_4[axiom_instance] by simp

    lemma basic_prop_2[PLM]:
      "[Contingent q\<^sub>0 in v]"
      unfolding Contingent_def Necessary_defs Impossible_defs
      apply (rule oth_class_taut_6_d[equiv_rl])
      apply (     "[\<^old>\<>\phi>inv]\Longrightarrow>[<bold><A\<bold\A\phi> in v]"
       using oth_class_taut_4_b[equiv_sym] apply simp
      using qml_4[axiom_instance,conj_sym]
      unfolding q\<^sub>0_def diamond_def by simp

    lemma basic_prop_3[PLM]:
      "[Contingent (q\<^sub>0\<^sup>-) in v]"
      apply (rule thm_cont_propos_3[equiv_lr])
      using basic_prop_2 .

    lemma basic_prop_4[PLM]:
      "[\<^bold>\<exists> (p::\<o>) q . p \<^bold>\<noteq> q \<^bold>& Contingent p \<^bold>& Contingent q in v]"
      apply (rule_tac \<alpha>="q\<^sub>0" in "\<^bold>\<exists>I", rule_tac \<alpha>="q\<^sub>0\<^sup>-" in "\<^bold>\<exists>I")
      using thm_relation_negation_6 basic_prop_2 basic_prop_3 "\<^bold>&I" by simp

    lemma four_distinct_props_1[PLM]:
      "[NonContingent[PLM_elim PLM_dest:
      proofruleCP)
        assume "[NonContingent p in v]"
        hence "[\<^bold>\<not>(Contingent p) in v]"
          unfolding NonContingent_def Contingent_def
          apply - by PLM_solver
        moreover {
           assume "[\<^bold>\<exists> q . Contingent q \<^bold>& q \<^bold>= p in v]"
           then obtain r where "[Contingent r \<^bold>& r \<^bold>= p in v]"
            by (rule "\<^bold>\<exists>E")
           hence "[Contingent p in v]"
             usingqml_act_2[axiom_instance,equiv_rl] java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
by
        }
        ultimately show "[\<^bold>\<not>(\<^bold>\<exists>q. Contingent q \<^bold>& q \<^bold>= p) in v]"
          using modus_tollens_1 CP by blast
      qed

    lemma four_distinct_props_2[PLM]:
      "[Contingent (p::\<o>) \<^bold>\<rightarrow> \<^bold>\<not>(\<^bold>\<exists> q . (NonContingent q \<^bold>& q \<^bold>= p)) in v]"
      proof (rule CP)
        assume "[Contingent p in v]"
        hence "[\<^bold>\<not>(NonContingent p) in v]"
          unfolding NonContingent_def Contingent_def
          apply M_solver
        moreover {
           assume "[\<^bold>\<exists> q . NonContingent q \<^bold>& q \<^bold>= p in v]"
              re[nContingent<bold>r<bold=p in v]"
            <<exists>E")
           NonContingentgentp n ]
             using "\<^bold>&E" l_identity[axiom_instance, deduction, deduction]
             by blast
        }
>\<exists>q. NonContingent q \<^bold>& q \<^bold>= p) in v]"
          using modus_tollens_1 [\<lparr>O!,y\<^sup>P\<rparr> in ]<and> \^><box>(\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<F,y\<^sup>P\<rparr>) in ]
      qed

    lemma four_distinct_props_4[PLM]:
      "[p\<^sub>0 \<^bold>\<noteq> (p\<^sub>0\<^sup>-) \<^bold>& p\<^sub>0 \<^bold>\<noteq> q\<^sub>0 \<^bold>&</span> p\<^sub>0 \<^bold>\<noteq> (q\<^sub>0\<^sup>-) \<^bold>& (p\<^sub>0\<^sup>-) \<^bold         -
        \<^bold>& (p\<^sub>0\<^sup>-) \<^bold>\<noteq> (q\<^sub>0\<^sup>-) \<^bold>& q\<^sub>0 \<^bold>\<noteq> (q\<^java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
      proof (rule "\<^bold>&I")+
        show "[p\<^sub>0 \<^bold>\<noteq> (p\<^sub>0\<^sup>-) in v]"
          by (rule thm_relation_negation_6)
        next
          {
            assume "[p\<^sub>0 \<^bold>= q\<^sub>0 in v]"
            hence "[\<^bold>\<exists> q . NonContingent q \<^bold>& q \<^bold>= q\<^sub>0 in v]"
              using "\<^bold>&I" thm_noncont_propos_3 "\<^bold>\<exists>I"[where \<alpha>=p\<^sub>0]
              by simp
          }
          thus "[p\<^sub>0 \<^bold>\<noteq> q\<^sub>0 in v]"
            using four_distinct_props_2[deduction, OF basic_prop_2]
                
            by blast
        next
          {
            assume "[p\<^sub>0 \<^bold>= (q\<^sub>0\<^sup>-) in v]"
            hence "[\<^bold>\<exists> q . NonContingent q \<^bold>& q \<^bold>=(\sub>0<sup-)n ]
              using thm_noncont_propos_3 "\<^bold>&I" "\<^bold>\<exists>I"[where \<alpha>=p\<^sub>0] by simp
          }
          thus "[p\<^sub>0 \<^bold>\<noteq> (q\<^sub>0\<^sup>-) in v]"
            using four_distinct_props_2[deduction, OF basic_prop_3]
                  modus_tollens_1 CP
          by blast
        next
          {
            assume "[(p\<^sub>0\<^sup>-) \<^bold>= q\<^sub>0 in v]"
            hence "[\<^bold>\<exists>   nContingentngentq<bold& q \<^bold>= q\<^sub>0 in
              using thm_noncont_propos_4 "\<^olddI"^bold<exists>Iwhere\<lpha=\<ub0<up- java.lang.StringIndexOutOfBoundsException: Index 118 out of bounds for length 118
          }
          thus "[(p\<^sub>0\<^sup>- <><noteq> q\<^sub>0 in v]"
            using four_distinct_props_2[deduction, OF basic_prop_2]
                  modus_tollens_1 CP
            by blast
        next

            assume "[(p\<^sub>0\<^sup>-) \<^bold>= (q\<^sub>0\<^sup>-) in v]"
boldq .NonContingent <bold>q\^bold=(q\<^sub>0\<^sup>-) in v]"
               thm_noncont_propos_4<>I <<>I"where \alpha=p<sub>0<sup-] by auto
          }
          thus "[(p\<^sub>0\<^sup>-) \<^bold>\<noteq> (q\<^sub>0\<^sup>-) in v]"
            using four_distinct_props_2[deduction, OF basic_prop_3]
                  modus_tollens_1 CP
            by blast
        next
          show "[q\<^sub>0 \<^bold>\<noteq> (q\<^sub>0\<^sup>-) in v]"
            by (rule thm_relation_negation_6)
        qed

    lemma cont_true_cont_1[PLM]:
      "[ContingentlyTrue p \<^bold>\<rightarrow> Contingent p in v]"
      apply (rule CP, rule thm_cont_propos_2[equiv_rl])
      unfolding ContingentlyTrue_def
      apply (rule "\<^bold>&I", drule "\<^bold>&E"(1))
       using "T\<^bold>\<diamond>"[deduction] apply simp
      by (rule "\<^bold>&E"(2))
  
    lemma cont_true_cont_2[PLM]:
      "[ContingentlyFalse p \<^bold>\<rightarrow> Contingent p in v]"
      apply (rule CP, rule thm_cont_propos_2[equiv_rl])
      unfolding ContingentlyFalse_def
      apply (rule "\<^bold>&I", drule "\<^bold>&E"(2))
       apply simp
      apply (drule "\<^bold>&E"(1))
      using "T\<^bold>\<diamond>"[deduction] by simp
  
    lemma cont_true_cont_3[PLM]:
      "[ContingentlyTrue p \<^bold>\<equiv> ContingentlyFalse (p\<^sup>-) in v]"
      unfolding ContingentlyTrue_def ContingentlyFalse_def
      apply (PLM_subst_method "\<^bold>\<not>p" "p\<^sup>-")
       using thm_relation_negation_3[equiv_sym] apply simp
      apply (PLM_subst_method "p" "\<^bold>\<not>\<^bold>\<not>p")
      by PLM_solver+
  
    lemma cont_true_cont_4[PLM]:
      "[ContingentlyFalse p \<^bold>\<equiv> ContingentlyTrue (p\<^sup>-) in v]"
      unfolding ContingentlyTrue_def ContingentlyFalse_def
      apply (PLM_subst_method "\<^bold>\<not>p" "p\<^sup>-")
using[[equiv_sym apply simp
      apply (PLM_subst_method "p" "\<^bold>\<not>\<^bold>\<not>p")
      by PLM_solver+

    lemma cont_tf_thm_1[PLM]:
      "[ContingentlyTrue q\<^sub>0 \<^bold>\<or> ContingentlyFalse q\<^sub>0 in v]"
      proof -
        have "[q\<^sub>0 \<^bold>\<or> \<^bold>\<not>q\<^sub>0 in v]"
          byPLM_solver
        moreover {
          assume "[q\<^sub>0 in v]"
          hence "[q\<^sub>0 \<^bold>& \<^bold>\<diamond>\<^bold>\<not>q\<^sub>0 in v]"
            unfolding q\<^sub>0_def
            using qml_4[axiom_instance,conj2] "\<^bold>&I"
            by auto
        hence "[\<bold\not(<^old>\<forall> \<alpha> . \<^bold>\<A\bold<not>phi>\alpha>)\<^bold><equiv \^>\not(<bold\forall>\alpha  <bold><><bold<<alpha>) in v]"
        moreover {
                   using oth_class_taut_5_d] byblast
          hence "[(\<^bold>\<not>q\<^sub>0) \<^bold>& \<^bold>\<diamond>q\<^sub>0 in v]"
            unfolding q\<^sub>0_def
            using qml_4[axiom_instance,conj1] "\<^bold>&I"
            by auto
        }
        ultimatelyhow?sis
          unfolding ContingentlyTrue_def ContingentlyFalse_def
          using "\<^bold>\<or>E"(4) CP by auto
      qed

    lemma cont_tf_thm_2[PLM]:
      [ContingentlyFalse q\<^sub>0 \<^bold>\<or> ContingentlyFalse (q\<^sub>0\<^sup>-) in v]"
_sub>0"]
            cont_true_cont_4[where p="q\<^sub>0"]
      apply - by PLM_solver

     nt_tf_thm_3
      "\^bold\exists> p . ContingentlyTrue p in v]"
      proof (rule "\<^bold>\<          using l_identity[[xiom_instancedeductionuctiondeduction fastst
        show "[ContingentlyTrue q\<^sub>0 \<^bold>\<or> ContingentlyFalse q\<^sub>0 in v]"
          using cont_tf_thm_1 .
      next
        assume "[ContingentlyTrue q\<^sub>0 in v]"
        thus ?thesis
          using "\<^bold>\<existsI"y etis
      next
        assume "[ContingentlyFalse q\<^sub>0 in v]"
        hence "[ContingentlyTrue (q\<^sub>0\<^sup>-) in v]"
          usingcont_true_cont_4[equiv_lr bysimp
        thus ?thesis
          using "\<^bold>\<exists>I" by metis
      qed

    lemma cont_tf_thm_4[PLM]:
      "[\<^bold>\<exists> p . ContingentlyFalse p in v]"
      proof (rule "\<^bold>\<or>E"(1); (rule CP)?)
         "ContingentlyTrueq\<sub> <^bold><or ContingentlyFalse q\<^sub0inv
          using cont_tf_thm_1 .
      next
        assume "[ContingentlyTrue q\<^sub>0 in v]"
        hence "[ContingentlyFalse (q\<^sub>0\<^sup>-)  ]
          rue_cont_3lrby java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
        thus ?thesis
          using "\<^bold>\<exists>I" by metis
      next
        assume "[ContingentlyFalse q\<^sub>0 in v]"
        thus ?thesis
          using "\<^bold>\<exists>I" by metis
      qed

    lemma cont_tf_thm_5[PLM]:
      "[ContingentlyTrue p \<^bold>& Necessary q \<^bold>\<rightarrow> p \<^bold>\<noteq> q in v]"
      proof (P
        assume "[ContingentlyTruep<bold>ecessarysaryq "
        hence 1: "[\<^bold>\<diamond>(\<^bold>\<not>p) \<^bold>& \<^bold>\<box> q in v]"
          unfolding ContingentlyTrue_def Necessary_defs
          using "\<^bold>&E" "\<^bold>&I" by blast
        hence "[\<^bold>\<not>\<^bold>\<box>p in v]"
          apply - apply (drule "\<^bold>&E"(1))
          unfolding diamond_def
          apply (PLM_subst_method "\<^bold>\<not>\<^bold>\<not>p" "p")
          using oth_class_taut_4_b[equiv_sym] by auto
        moreover {
          assume "[p \<^bold>= q in v]"
          hence "[\<^bold>\<box>p in v]"
            using l_identity[where \<alpha>="q" and \<beta>="p" and \<phi>="\<lambda> x . \<^bold>\<box> x",
                             axiom_instance, deduction, deduction]
                  1[conj2] id_eq_prop_prop_8_b[deduction]
            by blast
        }
        ultimately show "[p \<^bold>\<noteq> q in v]"
          using modus_tollens_1 CP by blast
      qed

    lemma cont_tf_thm_6PLM]:
      "[(ContingentlyFalse p \<^bold>& Impossible q) \<^bold>\<rightarrow> p \<^bold>\<noteq> q in v]"
      proof (rule CP)
        assume "[ContingentlyFalse p \<^bold>& Impossible q in v]"
        hence 1: "[\<^bold>\<diamond>p \<^bold>& \<^bold>\<box>(\<^bold>\<not>q) in v]"
          unfolding ContingentlyFalse_def"\<alpha>\<^supP and \<eta>"<bold\iotax..\<phi x"and\phi>=\<lambda> x . x  \^bold>=\alpha>\<^sup>P"
          using "\<^bold>&E" "\<^bold>&I" by blast
        hence "[\<^bold>\<not>\<^bold>\<diamond>q in v]"
          unfolding diamond_def apply - by PLM_solver
        moreover {
          assume "[p \<^bold>= q in v]"
          hence "[\<^bold>\<diamond>q in v]"
usingaxiom_instance ,deduction [conj1]
                  id_eq_prop_prop_8_b[deduction]
            by blast
        }
        ultimately show "[p \<^bold>\<noteq> q in v]"
          using modus_tollens_1 CP by blast
      qed
  end

  lemma oa_contingent_1[PLM]:
    "[O! \<^bold>\<noteq> A! in v]"
    proof -
      {
        assume "[O! \<^bold>= A! in v]"
        hence "[(\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
          unfolding Ordinary_def Abstract_def .
        moreover have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          apply (rule beta_C_meta_1)
java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
        ultimately have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          using l_identity[axiom_instance, deduction, deduction    [<^bold>\diamond>(\<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr>) in v]"
        moreover have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          apply (rule beta_C_meta_1)
          by show_proper
<<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not><^boldld<><
          apply - by PLM_solver
      }
      thus ?thesis
        using oth_class_taut_1_b modus_tollens_1 CP
        by blast
    qed

  lemma oa_contingent_2[PLM]:
    "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr> in v]"
    proof -
        have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          apply (rule beta_C_meta_1)
          by show_proper
        hence "[(\<^bold>\<not>\<lparr>(\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr>) \<^bold>\<equiv> \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          using oth_class_taut_5_d[equiv_lr] oth_class_taut_4_b[equiv_sym]
                "\<^bold>\<equiv>E"(5) by blast
        moreover have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
          apply (rule beta_C_meta_1)
          by show_proper
        ?
          unfolding Ordinary_def Abstract_def
          apply - by PLM_solver
    qed

  lemma oa_contingent_3[PLM]:
    "[\<lparr>A!,        hence "?hs dw"using"<bold\existsI"[ \alpha>\alpha> by ( : identity_defs)
    using oa_contingent_2
    apply - by PLM_solver

  lemma oa_contingent_4[PLM]:
    "[Contingent O! in v]"
    apply (rule thm_cont_prop_2[equiv_rl], rule "\<^bold>&I")
    subgoal
      unfolding Ordinary_def
      apply (PLM_subst_method "\<lambda> x . \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lambda> x . \<lparr>\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>")
       apply (safe intro!: beta_C_meta_1[equiv_sym])
        apply show_proper
      using "BF\<^bold>\<diamond>"[deduction, OF thm_cont_prop_2[equiv_lr, OF thm_cont_e_2, conj1]]
      by (rule "T\<^bold>\<diamond>"[deduction])
    subgoal
      apply (PLM_subst_method "\<lambda> x . \<lparr>A!,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>")
             }
      using cqt_further_5[deduction,conj1, OF A_objects[axiom_instance]]
      by (rule "T\<^bold>\<diamond>"[deduction])
    done

_contingent_5[PLM]:
    "[Contingent A! in v]"
    apply (rule thm_cont_prop_2[equiv_rl], rule "\<^bold>&I")
    subgoal
      using cqt_further_5[deduction,conj1, OF A_objects[axiom_instance]]
by T<bold\diamond>[])
    subgoal
unfolding Abstract_def
      apply (PLM_subst_method "\<lambda> x . \<bold<not\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lambda>x  <>\<^ld<> ^>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,xsup>P\<rparr>")
       apply (safentro a_C_meta_1sym]
        apply show_proper
      apply (PLM_subst_method "\<lambda> x . \<^bold>\<diamond>\<lparr>E!,x\<^supPrparr""\<lambda> x . \<^bold>\<not>\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>")
       using oth_class_taut_4_b apply simp
      using "BF\<bold<diamond"[deduction, OF thm_cont_prop_2[equiv_lr, OF thm_cont_e_2, conj1]]
      by (rule "T\<^bold>\<diamond>"[uctionion
    done

  lemma oa_contingent_6[PLM]:
"[(O!\<^sup>-) \<^bold>\<noteq> (A<sup>-)injava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
    proof -
      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
        assume "[(O!\<^sup>-) \<^bold>= (A!\<^sup>-) in v]"
        hence<old\<lambda>x. \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>) in v]"
          lding_
        moreover have "[\<lparr>(\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>), x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>O!,x<supP<rparr> in v]"
pply)
          by show_proper
        ultimatelyave\lparr>\<old<ambdax \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr> \<^bold>\<equiv>  \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr> in v]"
usingm_instance,ductioneductionjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
          byfast
        hence "[(\<^bold>\<not<>A!,x\^supP\<rparr>) \<^bold>\<equiv> \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>  v]"
          apply -
          apply (PLM_subst_method "\<lparr><^old><lambda>x. \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>" "(\<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>)")
           apply (safe intro!: beta_C_meta_1)
          by show_proper
        hence "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr> in v]"
          usingntingent_2 yM_solver
      
      thus thesis
        using oth_class_taut_1_b modus_tollens_1 CP
        otes_Abs_rel_fix_irregularIrI
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

  lemma oa_contingent_7[PLM]:
    "[\<lparr>usingAct_Basic_5lr    impddOT_model_<>concrete_in_some_world \<Pi>'_prop)
    proof -
      have "[(\<^bold>\<not>\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr\^bold\<equiv> <>A!x<sup>P\<rparr> in v]"
        apply (PLM_subst_method "(\<^bold>\<not>\<lparr>A!fixs<open><> \<Rightarrow> \<o>\<close>
         apply (safe intro!: beta_C_meta_1[equiv_sym])
          apply show_proper
        using\openQuotient AOT_rel_equiv rel_to_urrel urrel_to_rel
      moreover have "[\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>O!,x\<^sup>P\<>x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr> in v]"
       (ta_C_meta_1_
        \v . AOT_model_valid_in v (Rep_rel \<Pi>' a) =
      ultimatelythesississ
        unfolding propnot_defs
        using oa_contingent_3
        apply - by PLM_solver
    qed

  lemma oa_contingent_8[PLM]:
    "[Contingent (O!\<hence "\<bold><A    AOT_model_irregular>y. \<phi> ( x' . AOT_model_term_equiv x'y)yclose>
    using oa_contingent_4 thm_cont_prop_3[equiv_lr] by auto

  lemma oa_contingent_9[PLM]:
"[Contingent (A!\<^sup>-) in v"
    using oa_contingent_5 thm_cont_prop_3[equiv_lr] by auto

  lemma oa_facts_1[PLM]:
    "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>O!,x\<^sup>P\<rparr> in v]"
    proof (rule CP)
      assume "[\<lparr>O!,x\<^sup>P\<rparr> in v]"
      hence "[\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        unfolding Ordinary_def apply -
        apply (rule beta_C_meta_1[equiv_lr])
        by show_proper
      hence "[\<^bold>\<box>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        using qml_3[axiom_instance, deduction] by auto
      thus "[\<^bold>\<box>\<lparr>O!,x\<^sup>P\<rparr> in v]"
        unfolding Ordinary_def
        apply -
        apply (PLM_subst_method "\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lparr>\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>")
         apply (safe intro!: beta_C_meta_1[equiv_sym])
        by show_proper
    qed

  lemma oa_facts_2[PLM]:
    "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
    proof (rule CP)
      assume "[\<lparr>A!,x\<^sup>P\<rparr> in v]"
      hence "[\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        unfolding Abstract_def apply -
        apply (rule beta_C_meta_1[equiv_lr])
        by show_proper
      hence "[\<^bold>\<box>\<^bold>\<box>\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        using KBasic2_4[equiv_rl] "4\<^bold>\<box>"[deduction] by auto
      hence java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        apply -
        apply (PLM_subst_method "\<^bold>\<box>\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>" "\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>")
        using KBasic2_4 by auto
      thus "[\<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
        unfolding Abstract_def
        apply -
        apply (PLM_subst_method "\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>")
         apply (safe intro!: beta_C_meta_1[equiv_sym])
        by show_proper
    qed

  lemma oa_facts_3[PLM]:
    "[\<^bold>\<diamond>\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<lparr>O     unfolding identity_\<>_def
    using oa_facts_1 by (rule derived_S5_rules_2_b)

  lemma oa_facts_4[PLM]:
    "[\<^bold>\<diamond>\<lparr>A!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<lparr>A!,x\<^sup>P\<rparr> in v]"
    using oa_facts_2 by (rule derived_S5_rules_2_b)

  lemma oa_facts_5[PLM]:
    " [\^><orall x . (x\<supP <bold=(<bold\iota>  \phi x\^><> x<supP\^>=(\^><>x.\psi ))  
    using oa_facts_1[deduction, OF oa_facts_3[deduction]]
      "T\<^bold>\<diamond>"[deduction, OF qml_2[axiom_instance, deduction]]
      "\<^bold>\<equiv>I" CP by blast

  lemma oa_facts_6[PLM]:
    "[\<^bold>\<diamond>\<lparr>A!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
    using oa_facts_2[deduction, OF oa_facts_4[deduction]]
      "T\<^bold>\<diamond>"[deduction, OF qml_2[axiom_instance, deduction]]
      "\<^bold>\<equiv>I" CP by blast

  lemma oa_facts_7[PLM]:
    "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<A>\<lparr>O!,x\<^sup>P\<rparr> in v]"
    apply (rule "\<^bold>\<equiv>I"; rule CP)
     apply (rule nec_imp_act[deduction, OF oa_facts_1[deduction]]; assumption)
    proof -
      assume "[\<^bold>\<A>\<lparr>O!,x\<^sup>P\<rparr> in v]"
      hence "[\<^bold>\<A>(\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
        unfolding Ordinary_def  apply -
        apply (PLM_subst_method "\<lparr>\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>" "\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>")
        apply (safe intro!: beta_C_meta_1)
        by show_proper
      hence "[\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        using Act_Basic_6[equiv_rl] by auto
      thus "[\<lparr>O!,x\<^sup>P\<rparr> in v]"
        unfolding Ordinary_def apply -
        apply (PLM_subst_method "\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lparr>\<^bold>\<lambda>x. \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>")
         apply (safe intro!: beta_C_meta_1[equiv_sym])
        by show_proper
    qed

  lemma oa_facts_8[PLM]:
    "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<^bold>\<A>\<lparr>A!,x\<^sup>P\<rparr> in v]"
    apply (rule "\<^bold>\<equiv>I"; rule CP)
     apply (rule nec_imp_act[deduction, OF oa_facts_2[deduction]]; assumption)
    proof -
      assume "[\<^bold>\<A>\<lparr>A!,x\<^sup>P\<rparr> in v]"
      hence "[\<^bold>\<A>(\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
        unfolding Abstract_def apply -
        apply (PLM_subst_method "\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>" "\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>")
        apply (safe intro!: beta_C_meta_1)
        by show_proper
      hence "[\<^bold>\<A>(\<^bold>\<box>\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
        apply -
        apply (PLM_subst_method "(\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>)" "(\<^bold>\<box>\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)")
        using KBasic2_4[equiv_sym] by auto
      hence "[\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        using qml_act_2[axiom_instance, equiv_rl] KBasic2_4[equiv_lr] by auto
      thus "[\<lparr>A!,x\<^sup>P\<rparr> in v]"
        unfolding Abstract_def apply -
        apply (PLM_subst_method "\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>")
        apply (safe intro!: beta_C_meta_1[equiv_sym])
        by show_proper
    qed

  lemma cont_nec_fact1_1[PLM]:
    "[WeaklyContingent F \<^bold>\<equiv> WeaklyContingent (F\<^sup>-) in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[WeaklyContingent F in v]"
      hence wc_def: "[Contingent F \<^bold>& (\<^bold>\<forall> x . (\<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>F,x\<^sup>P\<rparr>)) in v]"
        unfolding WeaklyContingent_def .
      have "[Contingent (F\<^sup>-) in v]"
        using wc_def[conj1] by (rule thm_cont_prop_3[equiv_lr])
      moreover {
        {
          fix x
          assume "[\<^bold>\<diamond>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> in v]"
          hence "[\<^bold>\<not>\<^bold>\<box>\<lparr>F,x\<^sup>P\<rparr> in v]"
            unfolding diamond_def apply -
            apply (PLM_subst_method "\<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>" "\<lparr>F,x\<^sup>P\<rparr>")
             using thm_relation_negation_2_1 by auto
          moreover {
            assume "[\<^bold>\<not>\<^bold>\<box>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> in v]"
            hence "[\<^bold>\<not>\<^bold>\<box>\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>,x\<^sup>P\<rparr> in v]"
               propnot_defs
            hence "[\<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr> in v]"
              unfolding diamond_def
              apply - apply (PLM_subst_method "\<lparr>\<^bold>\<lambda>x. \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>,x\<^sup>P\<rparr>" "\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>")
              apply (safe intro!: beta_C_meta_1)
              by show_proper
            hence "[\<^bold>\<box>\<lparr>F,x\<^sup>P\<rparr> in v]"
              using wc_def[conj2] cqt_1[axiom_instance, deduction]
                    modus_ponens by fast
          }
          ultimately have "[\<^bold>\<box>\<lparr>F\<^sup>-, x\<^sup>P\<rparr> in v]"
            using "\<^bold>\<not>\<^bold>\<not>E" modus_tollens_1 CP by blast
        }
        hence "[\<^bold>\<forall> x . \<^bold>\<diamond>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>F\<^sup>-, x\<^sup>P\<rparr> in v]"
          using "\<^bold>\<forall>I" CP by fast
      }
      ultimately show "[WeaklyContingent (F\<^sup>-) in v]"
        unfolding WeaklyContingent_def by (rule "\<^bold>&I")
    next
      assume "[WeaklyContingent (F\<^sup>-) in v]"
      hence wc_def: "[Contingent (F\<^sup>-) \<^bold>& (\<^bold>\<forall> x . (\<^bold>\<diamond>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>)) in v]"
        unfolding WeaklyContingent_def .
      have "[Contingent F in v]"
        using wc_def[conj1] by (rule thm_cont_prop_3[equiv_rl])
      moreover {
        {
          fix x
          assume "[\<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr> inhence :"<^>\\phi  \^>& \^bold\forallz.\^><><> z\^><rightarrow> <^> ) in ]
          hence "[\<^bold>\<not>\<^bold>\<box>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> in v]"
            unfolding diamond_def apply -
            apply (PLM_subst_method "\<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>" "\<lparr>F\<^sup>-,x\<^sup>P\<rparr>")
            using thm_relation_negation_1_1[equiv_sym] by auto
          moreover {
            assume "[\<^bold>\<not>\<^bold>\<box>\<lparr>F,x\<^sup>P\<rparr> in v]"
            hence "[\<^bold>\<diamond>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> in v]"
              unfolding diamond_def
              apply - apply (PLM_subst_method "\<lparr>F,x\<^sup>P\<rparr>" "\<^bold>\<not>\<lparr>F\<^sup>-,x\<^sup>P\<rparr>")
              using thm_relation_negation_2_1[equiv_sym] by auto
            hence "[\<^bold>\<box>\<lparr>F\<^sup>-,x\<^sup>P\<rparr> in v]"
              using wc_def[conj2] cqt_1[axiom_instance, deduction]
                    modus_ponens by fast
          }
          ultimately have "[\<^bold>\<box>\<lparr>F, x\<^sup>P\<rparr> in v]"
            using "\<^bold>\<not>\<^bold>\<not>E" modus_tollens_1 CP by blast
        }
        hence "[\<^bold>\<forall> x . \<^bold>\<diamond>\<lparr>F,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \            [^>>>^>rightarrow^old= byrule)
          using "\<^bold>\<forall>I" CP by fast
      }
      ultimately show "[WeaklyContingent (F) in v]"
        unfolding WeaklyContingent_def by (rule "\<^bold>&I")
    qed

  lemma cont_nec_fact1_2[PLM]:
    "[(WeaklyContingent F \<^bold>& \<^bold>\<not>(WeaklyContingent G)) \<^bold>\<rightarrow> (F \<^bold>\<noteq> G) in v]"
    using l_identity[axiom_instance,deduction,deduction] "\<^bold>&E" "\<^bold>&I"
          modus_tollens_1 CP by metis

  lemma cont_nec_fact2_1[PLM]:
    "[WeaklyContingent (O!) in v]"
    unfolding WeaklyContingent_def
    apply (rule "\<^bold>&I")
     using oa_contingent_4 apply simp
    using oa_facts_5 unfolding equiv_def
    using "\<^bold>&E"(1) "\<^bold>\<forall>I" by fast

  lemma cont_nec_fact2_2[PLM]:
    "[WeaklyContingent                \<bold\rightarrow> <lbrace>\<^sup>P,\^>\lambda z .<parr>,z\^sup>Pa^>P\<rparr>)<rbrace>in ]java.lang.StringIndexOutOfBoundsException: Index 135 out of bounds for length 135
    unfolding WeaklyContingent_def
    apply (rule "\<^bold>&I")
     using oa_contingent_5 apply simp
    using oa_facts_6 unfolding equiv_def
    using "\<^bold>&E"(1) "\<^bold>\<forall>I" by fast

  usinghintikka[equiv_lr cqt_basic_2equiv_lr,conj1java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
    "[\<^bold>\<not>(WeaklyContingent (E!)) in v]"
    proof (rule modus_tollens_1, rule CP)
      assume "[WeaklyContingent E! in v]"
      thus "[\<^bold>\<forall> x . \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>E!,x\<^sup>P\<rparr> in v]"
      unfolding WeaklyContingent_def using "\<^bold>&E"(2) by fast
    next
{
        assume 1: "[\<^bold>\<forall> x . \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        have "[\<^bold>\<exists> x . \<^bold>\<diamond>(\<lparr>E!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)) in v]"
          using qml_4[axiom_instance,conj1, THEN BFs_3[deduction]] .
                   (simp add identity_defs)
          by (rule "\<^bold>\<exists>E")
        hence "[\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
          using KBasic2_8[deduction] S5Basic_8[deduction]
                "\<^bold>&I" "\<^bold>&E" by blast
        hence "[\<^bold>\<box>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>\<^bold>\<box>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
          using 1[THEN "\<^bold>\<forall>E", deduction] "\<^bold>&E" "\<^bold>&I"
                [] by java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
hence[<bold>\<not>(<bold\forall x .\<^><diamond>\<parrE,x\^sup>P\rparr> <^bold\rightarrow \^bold><box><lparr>!,x\<^sup>P\<rparr>)inv"
          using oth_class_taut_1_a modus_tollens_1 CP by blast
      }
      thus "[\<^bold>\<not>(\<^bold>\<forall> x . \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
        using reductio_aa_2 if_p_then_p CP by meson
    qed

  lemma cont_nec_fact2_4[PLM]:
    "[\<^bold>\<not>(WeaklyContingent (PLM.L)) in v]"
    proof -
      {
        assume "[WeaklyContingent PLM.L in v]"
        hence "[Contingent PLM.L in v]"
          unfolding WeaklyContingent_def using "\<^bold>&E"(1) by blast
      }
      thus ?thesis
        using thm_noncont_e_e_3
        unfolding Contingent_def NonContingent_def
        using modus_tollens_2 CP by blast
    qed

  lemma cont_nec_fact2_5[PLM]:
    "[O! \<^bold>\<noteq> E! \<^bold>& O! \<^bold>\<noteq> (E!\<^sup>-) \<^bold>& O! \<^bold>\<noteq> PLM.L \<^bold>& O! \<^bold>\<noteq> (PLM.L\<^sup>-) in v]"
    proof ((rule "\<^bold>&I")+)
      show "[O! \<^bold>\<noteq> E! in v]"
        using cont_nec_fact2_1 cont_nec_fact2_3
              cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      have "[\<^bold>\<not>(WeaklyContingent (E!\<^sup>-)) in v]"
        using cont_nec_fact1_1[THEN oth_class_taut_5_d[equiv_lr], equiv_lr]
              cont_nec_fact2_3 by auto
      thus "[O! \<^bold>\<noteq> (E!\<^sup>-) in v]"
        using cont_nec_fact2_1 cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      show "[O! \<^bold>\<noteq> PLM.L in v]"
        using cont_nec_fact2_1 cont_nec_fact2_4
              cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      have "[\<^bold>\<not>(WeaklyContingent (PLM.L\<^sup>-)) in v]"
        using cont_nec_fact1_1[THEN oth_class_taut_5_d[equiv_lr], equiv_lr]
              cont_nec_fact2_4 by auto
      thus "[O! \<^bold>\<noteq> (PLM.L\<^sup>-) in v]"
        using cont_nec_fact2_1 cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    qed

  lemma cont_nec_fact2_6[PLM]:
    "[A! \<^bold>\<noteq> E! \<^bold>& A! \<^bold>\<noteq> (E!\<^sup>-) \<^bold>& A! \<^bold>\<noteq> PLM.L \<^bold>& A! \<^bold>\<noteq> (PLM.L\<^sup>-) in v]"
    proof ((rule "\<^bold>&I")+)
      show "[A! \<^bold>\<noteq> E! in v]"
        using cont_nec_fact2_2 cont_nec_fact2_3
              cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      have "[\<^bold>\<not>(WeaklyContingent (E!\<^sup>-)) in v]"
using[ [equiv_lr,equiv_lrjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
              cont_nec_fact2_3 by auto
      thus "[A! \<^bold>\<noteq> (E!\<^sup>-) in v]"
        using cont_nec_fact2_2 cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      show "[A! \<^bold>\<noteq> PLM.L in v]"
        using cont_nec_fact2_2 cont_nec_fact2_4
              cont_nec_fact1_2[deduction] "\<^bold>&I" by simp
    next
      have "[\<^bold>\<not>(WeaklyContingent (PLM.L\<^sup>-)) in v]"
        using cont_nec_fact1_1[THEN oth_class_taut_5_d[equiv_lr],
                ]cont_nec_fact2_4by auto
      thus "[A! \<^bold>\<noteq> (PLM.L\<^sup>-) in v]"
        using cont_nec_fact2_2 cont_nec_fact1_2[deduction                4[onj2 by 
    qed

  lemma id_nec3_1[PLM]:
    "[((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> (\<^bold>\<box>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)))  in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P) in v]"
      hence "[\<lparr>O!,x\<^sup>P\<rparr> in v] \<and> [\<lparr>O!,y\<^sup>P\<rparr> in v] \<and> [\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>) in v]"
        using eq_E_simple_1[equiv_lr] using "\<^bold>&E" by blast
      hence "[\<^bold>\<box>\<lparr>O!,x\<^sup>P\<rparr> in v] \<and> [\<^bold>\<box>\<lparr>O!,y\<^sup>P\<rparr> in v]
             \<and> [\<^bold>\<box>\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>) in v]"
        using oa_facts_1[deduction] S5Basic_6[deduction] by blast
      hence "[\<^bold>\<box>(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> \<^bold>&</span> \<^bold>\<box>(\<^bold>\<forall> F. \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>)) in v]"
        using "\<^bold>&I" KBasic_3[equiv_rl] by presburger
      thus "[\<^bold>\<box>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
        apply -
        apply (PLM_subst_method
               "(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> \<^bold>& \<^bold>\<box>(\<^bold>\<forall> F. \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>))"
               "(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)")
        using eq_E_simple_1[equiv_sym] by auto
    next
      assume "[\<^bold>\<box>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
      thus "[((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
      using qml_2[axiom_instance,deduction] by simp
    qed

  lemma id_nec3_2[PLM]:
    "[\<^bold>\<diamond>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> ((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[\<^bold>\<diamond>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
      thus "[(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P) in v]"
        using derived_S5_rules_2_b[deduction] id_nec3_1[equiv_lr]
              CP modus_ponens by blast
    next
      assume "[(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P) in v]"
      thus "[\<^bold>\<diamond>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
        by (rule TBasic[deduction])
    qed

  lemma thm_neg_eqE[PLM]:
    "[((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> (\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) in v]"
    proof -
      have "[(x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P) in v] = [\<lparr>(\<^bold>\<lambda>\<^sup>2 (\<lambda> x y . (x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)))\<^sup>-, x\<^sup>P, y\<^sup>P\<rparr> in v]"
        unfolding not_identical\<^sub>E_def by simp
      also have "... = [\<^bold>\
        lemmaKBasic_8[PLM:
        apply (safe intro!: beta_C_meta_2[equiv_lr] beta_C_meta_2[equiv_rl])
        by show_proper+
      also have "... = [\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
apply
               "\<lparr>(\<^bold>\<lambda>\<^sup>2 (\<lambda> x y . (x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))), x\<^sup  lemma KBasic_9[]
               "(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)")
         apply (safe intro!: beta_C_meta_2)
        unfolding identity_defs by show_proper
      finally show ?thesis
        using "\<^bold>\<equiv>I" CP by presburger
    qed

  lemma id_nec4_1[PLM]:
    "[((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> \<^bold>\<box>((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) in v]"
    proof -
      have "[(\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) \<^bold>\<equiv> \<^bold>\<box>(\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) in v]"
        using id_nec3_2[equiv_sym] oth_class_taut_5_d[equiv_lr]
        KBasic2_4[equiv_sym] intro_elim_6_e by fast
      thus ?thesis
        apply -
        apply (PLM_subst_method "(\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)))" "(x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)")
        using thm_neg_eqE[equiv_sym] by auto
    qed

  lemma id_nec4_2[PLM]:
    "[\<^bold>\<diamond>((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> ((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) in v]"
    using "\<^bold>\<equiv>I" id_nec4_1[equiv_lr] derived_S5_rules_2_b CP "T\<^bold>\<diamond>" by simp

  lemma id_act_1[PLM]:
    "[((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> (\<^bold>\<A>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) in v]"
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P) in v]"
      hence "[\<^bold>\<box>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
        using id_nec3_1[equiv_lr] by auto
      thus "[\<^bold>\<A>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
        using nec_imp_act[deduction] by fast
    next
      assume "[\<^bold>\<A>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) in v]"
      hence "[\<^bold>\<A>(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> \<^bold>&pan> \<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>)) in v]"
        apply -
        apply (PLM_subst_method
               "(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)"
"lparr>,\<^sup>\<rparr> \^bold& \<parrOy\^supP<rparr <bold> <^bold>\<box(<^bold><forall F  \lparrFx<supP<>\<^>\equiv \lparr>Fy\<supP<rparr)")
        using eq_E_simple_1 by auto
      hence "[\<^bold>\<A>\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<A>\<lparr>O!,y\<^sup>P\<rparr> \<^bold>& \<^bold>\<A>(\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>)) in v]"
        using Act_Basic_2[equiv_lr] "\<^bold>&I" "\<^bold>&E" by meson
      thus "[(x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P) in v]"
        apply - apply (rule eq_E_simple_1[equiv_rl])
        using oa_facts_7[equiv_rl] qml_act_2[axiom_instance, equiv_rl]
              "\<^bold>&I" "\<^bold>&E" by meson
    qed

  lemma id_act_2[PLM]:
    "[((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P)) \<^bold>\<equiv> (\<^bold>\<A>((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P))) in v]"
    apply (PLM_subst_method "(\<^bold>\<not>((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)))" "((x\<^sup>P) \<^bold>\<noteq>\<^sub>E (y\<^sup>P))")
     using thm_neg_eqE[equiv_sym] apply simp
    using id_act_1 oth_class_taut_5_d[equiv_lr] thm_neg_eqE intro_elim_6_e
          logic_actual_nec_1[axiom_instance,equiv_sym] by meson

end

   +
  assumes id_act_prop: "[\<^bold>\<A>(\<alpha> \<^bold>= \<beta>) in v] \<Longrightarrow> [(\<alpha> \<^bold>= \<beta>) in v]"

instantiation \<nu> :: id_act
begin
  instance proof
    interpret PLM .
    fix x::\<nu> and y::\<nu> and v::i
    assume "[\<^bold>\<A>(x \<^bold>= y) in v]"
    hence "[\<^bold>\<A>(((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P)) \<^bold>\<or> (\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr>
            \<^bold>& \<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P,F\<rbrace>))) in v]"
      unfolding identity_defs by auto
    hence "[\<^bold>\<A>(((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) \<^bold>\<or> \<^bold>\<A>((\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr>
            \<^bold>& \<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P,F\<rbrace>))) in v]"
      using Act_Basic_10[equiv_lr] by auto
    moreover {
       assume "[\<^bold>\<A>(((x\<^sup>P) \<^bold>=\<^sub>E (y\<^sup>P))) in v]"
       hence "[(x\<^sup>P) \<^bold>= (y\<^sup>P) in v]"
        using id_act_1[equiv_rl] eq_E_simple_2[deduction] by auto
    }
    moreover {
       assume "[\<^bold>\<A>(\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>&span> \<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P,F\<rbrace>)) in v]"
       hence "[\<^bold>\<A>\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<A>\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& \<^bold>\<A>(\<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P,F\<rbrace>)) in v]"
         using Act_Basic_2[equiv_lr] "\<^bold>&I" "\<^bold>&E" by meson
       hence "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P,F\<rbrace>)) in v]"
         using oa_facts_8[equiv_rl] qml_act_2[axiom_instance,equiv_rl]
           "\<^bold>&I" "\<^bold>&E" by meson
       hence "[(x\<^sup>P) \<^bold>= (y\<^sup>P) in v]"
        unfolding identity_defs using "\<^bold>\<or>I" by auto
    }
    ultimately have "[(x\<^sup>P) \<^bold>= (y\<^sup>P) in v]"
      using intro_elim_4_a CP by meson
    thus "[x \<^bold>= y in v]"
      unfolding identity_defs by auto
  qed
end

instantiation \<Pi>\<^sub>1 :: id_act
begin
  instance proof
    interpret PLM .
    fix F::\<Pi>\<^sub>1 and G::\<Pi>\<^sub>1 and v::i
    show "[\<^bold>\<A>(F \<^bold>= G) in v] \<Longrightarrow> [(F \<^bold>= G) in v]" 
      unfolding identity_defs
      using qml_act_2[axiom_instance,equiv_rl] by auto
  
end

instantiation \<o> :: id_act
begin
  instance proof
    interpret PLM .
    fix p :: \<o> and q :: \<o> and v::i
    show "[\<^bold>\<A>(p \<^bold>= q) in v] \<Longrightarrow> [p \<^bold>= q in v]"
      unfolding identity\<^sub>\<o>_def using id_act_prop by blast
  qed
end

instantiation \<Pi>\<^sub>2 :: id_act
begin
  instance proof
    interpret PLM .
    fix F::\<Pi>\<^sub>2 and G::\<Pi>\<^sub>2 and v::i
    assume a: "[\<^bold>\<A>(F \<^bold>= G) in v]"
    {
      fix x
      have "[\<^bold>\<A>((\<^bold>\<lambda>y. \<lparr>F,x\<^sup>P,y\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>y. \<lparr>G,x\<^sup>P,y\<^sup>P\<rparr>)
             \<^bold>& (\<^bold>\<lambda>y. \<lparr>F,y\<^sup>P,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>y. \<lparr>G,y\<^sup>P,x\<^sup>P\<rparr>)) in v]"
        using a logic_actual_nec_3[axiom_instance, equiv_lr] cqt_basic_4[equiv_lr] "\<^bold>\<forall>E"
        unfolding identity\<^sub>2_def by fast
      hence "[((\<^bold>\<lambda>y. \<lparr>F,x\<^sup>P,y\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>y. \<lparr>G,x\<^sup>P,y\<^sup>P\<rparr>))
              \<^bold>& ((\<^bold>\<lambda>y. \<lparr>F,y\<^sup>P,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>y. \<lparr>G,y\<^sup>P,x\<^sup>P\<rparr>)) in v]"
        using "\<^bold>&I" "\<^bold>&E" id_act_prop Act_Basic_2[equiv_lr] by metis
    }
    thus "[F \<^bold>= G in v]" unfolding identity_defs by (rule "\<^bold>\<forall>I")
  qed
end

instantiation \<Pi>\<^sub>3 :: id_act
begin
  instance proof
    interpret PLM .
    fix F::\<Pi>\<^sub>3 and G::\<Pi>\<^sub>3 and v:  definitionSubstable ::"(\<Rightarrow>a<Rightarrow>bool)<Rightarrow>'\Rightarrow\<> <> "
    assume a: "[\<^bold>\<A>(F \<^bold>= G) in v]"
    let ?p = "\<lambda> x y . (\<^bold>\<lambda>z. \<lparr>F,z\<^sup>P,x\<^sup>P,y\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>G,z\<^sup>P,x\<^sup>P,y\<^sup>P\<rparr>)
                    \<^bold>& (\<^bold>\<lambda>z. \<lparr>F,x\<^sup>P,z\<^sup>P,y\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>G,x\<^sup>P,z\<^sup>P,y\<^sup>P\<rparr>)
                    \<^bold>& (\<                    
    {
      fix x
      {
        fix y
        have "[\<^bold>\<A>(?p x y) in v]"
          using a logic_actual_nec_3[axiom_instance, equiv_lr]
                cqt_basic_4[equiv_lr] "\<^bold>\<forall>E"[where 'a=\<nu>]
          unfolding identity\<^sub>3_def by blast
        hence "[?p x y in v]"
          using "\<^bold>&I" "\<^bold>&E" id_act_prop Act_Basic_2[equiv_lr] by metis
      }
      hence "[\<^bold>\<forall> y . ?p x y in v]"
        by (rule "\<^bold>\<forall>I")
    }
    thus "[F \<^bold>= G in v]"
      unfolding identity\<^sub>3_def by (rule "\<^bold>\<forall>I")
  qed
end

context PLM
begin
  lemma id_act_3[PLM]:
    "[((\<alpha>::('a::id_act)) \<^bold>= \<beta>) \<^bold>\<equiv> \<^bold>\<A>(\<alpha> \<^bold>= \<beta>) in v]"
    using "\<^bold>\<equiv>I" CP id_nec[equiv_lr, THEN nec_imp_act[deduction]]
          id_act_prop by metis

  lemma id_act_4[PLM]:
    "[((\<alpha>::('a::id_act)) \<^bold>\<noteq> \<beta>) \<^bold>\<equiv> \<^bold>\<A>(\<alpha> \<^bold>\<noteq> \<beta>) in v]"
    using id_act_3[THEN oth_class_taut_5_d[equiv_lr]]
          logic_actual_nec_1[axiom_instance, equiv_sym]
          intro_elim_6_e by blast

  lemma id_act_desc[PLM]:
    "[(y\<^sup>P) \<^bold>= (\<^bold>\<iota>x . x \<^bold>= y) in v]"
    using descriptions[axiom_instance,equiv_rl]
          id_act_3[equiv_sym] "\<^bold>\<forall>I" by fast

  lemma eta_conversion_lemma_1[PLM]:
    "[(\<^bold>\<lambda> x . \<lparr>F,x\<^sup>P\<rparr>) \<^bold>= F in v]"
    using lambda_predicates_3_1[axiom_instance] .

  lemma eta_conversion_lemma_0[PLM]:
    "[(\<^bold>\<lambda>\<^sup>0 p) \<^bold>= p in v]"
    using lambda_predicates_3_0[axiom_instance] .

  lemma eta_conversion_lemma_2[PLM]:
    "[(\<^bold>\<lambda>\<^sup>2 (\<lambda> x y . \<lparr>F,x\<^sup>P,y\<^sup>P\<rparr>)) \<^bold>= F in v]"
    using lambda_predicates_3_2[axiom_instance] .

  lemma eta_conversion_lemma_3[PLM]:
    "[(\<^bold>\<lambda>\<^sup>3 (\<lambda> x y z . \<lparr>F,x\<^sup>P,y\<^sup>P,z\<^sup>P\<rparr>)) \<^bold>= F in v]"
    using lambda_predicates_3_3[axiom_instance] .

  lemma lambda_p_q_p_eq_q[PLM]:
    "[((\<^bold>\<lambda>\<^sup>0 p) \<^bold>= (\<^bold>\<lambda>\<^sup>0 q)) \<^bold>\<equiv> (p \<^bold>= q) in v]"
    using eta_conversion_lemma_0
          l_identity[axiom_instance, deduction, deduction]
          eta_conversion_lemma_0[eq_sym] "\<^bold>\<equiv>I" CP
    by metis

subsection\<open>The Theory of Objects
text\<open>\label{TAO_PLM_Objects}\<close>

lemma]
    "[\<^bold>\<forall> x . \<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<or> \<lparr>A!,x\<^sup>P\<rparr> in v]"
    proof (rule "\<^bold>\<forall>I")
      fix x
      have "[\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<or> \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> in v]"
        by PLM_solver
      moreover have "[\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>\<
        apply (rule beta_C_meta_1[equiv_sym])
         ]hd(ntecedents) [\> consequentp
      moreover have "[(\<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>) \<^bold>\<equiv> \<lparr>\<^bold>\<lambda> y . \<^bold>\<not>\<^bold>\<diamond>\<lparr>E!,y\<^sup>P\<rparr>, x\<^sup>P\<rparr> in v]"
        apply (rule beta_C_meta_1[equiv_sym])
        by show_proper
      ultimately show "[\<lparr>O!, x\<^sup>P\<rparr> \<^bold>\<or> \<lparr>A!, x\<^sup>P\<rparr> in v]"
        unfolding Ordinary_def Abstract_def by PLM_solver
    qed

  lemma partition_2[PLM]:
    "[\<^bold>\<not>(\<^bold>\<exists> x . \<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,x\<^sup>P\<rparr>) in v]"
    proof -
      {
        assume "[\<^bold>\<exists> x . \<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,x\<^sup>P\<rparr> in v]"
        then obtain b where "[\<lparr>O!,b\<^sup>P\<rparr> \<^bold>& \<lparr>A!,b\<^sup>P\<rparr> in v]"
          by (rule "\<^bold>\<exists>E")
        hence ?java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
          using "\<^bold>&E" oa_contingent_2[equiv_lr]
                reductio_aa_2 by fast
      }
      thus ?thesis
        using reductio_aa_2 by blast
    qed

  lemma ord_eq_Eequiv_1[PLM]:
    "[\<lparr>O!,x\<rparr> \<^bold>\<rightarrow> (x \<^bold>=\<^sub>E x) in v]"
    proof (rule CP)
      assume "[\<lparr>O!,x\<rparr> in v]"
      moreover have "[\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,x\<rparr>) in v]"
        by PLM_solver
      ultimately show "[(x) \<^bold>=\<^sub>E (x) in v]"
        using "\<^bold>&I" eq_E_simple_1[equiv_rl] by blast
    qed

  lemma ord_eq_Eequiv_2[PLM]:
       ill_deduct_tensor
    proof (rule CP)
     [^bold=^E yinv"
      hence 1: "[\<lparr>O!,x\<rparr> \<^bold>& \<lparr>O!,y\<rparr> \<^bold>& \<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,y\<rparr>) in v]"
        using eq_E_simple_1[equiv_lr] by simp
      have "[\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,y\<rparr> \<^bold>\<equiv> \<lparr>F,x\<rparr>) in v]"
        apply (PLM_subst_method
               "\<lambda> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,y\<rparr>"
               "\<lambda> F . \<lparr>F,y\<rparr> \<^bold>\<equiv> \<lparr>F,x\<rparr>")
        using oth_class_taut_3_g 1[conj2] by auto
      thus "[y \<^bold>=\<^sub>E x in v]"
        using eq_E_simple_1[equiv_rl] 1[conj1]
              "\<^bold>&E" "\<^bold>&I" by meson
    qed

  lemma ord_eq_Eequiv_3[PLM]:
    "[((x \<^bold>=\<^sub>E y) \<^bold>& (y \<^bold>=\<^sub>E z)) \<^bold>\<rightarrow> (x \<^bold>=\<^sub>E z) in v]"
    proof (rule CP)
      assume a: "[(x \<^bold>=\<^sub>E y) \<^bold>& (y \<^bold>=\<^sub>E z) in v]"
      have "[\<^bold>\<box>((\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,y\<rparr>) \<^bold>& (\<^bold>\<forall> F . \<lparr>F,y\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>)) in v]"
        using KBasic_3[equiv_rl] a[conj1, THEN eq_E_simple_1[equiv_lr,conj2]]
              a[conj2, THEN eq_E_simple_1[equiv_lr,conj2]] "\<^bold>&I" by blast
      moreover {
        {
          fix w
          have "[((\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,y\<rparr>) \<^bold>& (\<^bold>\<forall> F . \<lparr>F,y\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>))
                  \<^bold>\<rightarrow> (\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>) in w]"
            by PLM_solver
        }
        hence "[\<^bold>\<box>(((\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,y\<rparr>) \<^bold>& (\<^bold>\<forall> F . \<lparr>F,y\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>))
                \<^bold>\<rightarrow> (\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>)) in v]"
          by (rule RN)
      }
      ultimately have "[\<^bold>\<box>(\<^bold>\<forall> F . \<lparr>F,x\<rparr> \<^bold>\<equiv> \<lparr>F,z\<rparr>) in v]"
        using qml_1[axiom_instance,deduction,deduction] by blast
      thus "[x \<^bold>=\<^sub>E z in v]"
        using a[conj1, THEN eq_E_simple_1[equiv_lr,conj1,conj1]]
        using a[conj2, THEN eq_E_simple_1[equiv_lr,conj1,conj2]]
              eq_E_simple_1[equiv_rl] "\<^bold>&I"
        by presburger
    qed

  lemma ord_eq_E_eq[PLM]:
    "[(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<or> \<lparr>O!,y\<^sup>P\<rparr>) \<^bold>\<rightarrow> ((x\<^sup>P \<^bold>= y\<^sup>P) \<^bold>\<equiv> (x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P)) in v]"
    proof (rule CP)
      assume "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<or> \<lparr>O!,y\<^sup>P\<rparr> in v]"
      moreover {
        assume "[\<lparr>O!,x\<^sup>P\<rparr> in v]"
        hence "[(x\<^sup>P \<^bold>= y\<^sup>P) \<^bold>\<equiv> (x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
          using "\<^bold>\<equiv>I" CP l_identity[axiom_instance, deduction, deduction]
                ord_eq_Eequiv_1[deduction] eq_E_simple_2[deduction] by metis
      }
      moreover {
        assume "[\<lparr>O!,y\<^sup>P\<rparr> in v]"
        hence "[(x\<^sup>P \<^bold>= y\<^sup>P) \<^bold>\<equiv> (x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
          using "\<^bold>\<equiv>I" CP l_identity[axiom_instance, deduction, deduction]
                ord_eq_Eequiv_1[deduction] eq_E_simple_2[deduction] id_eq_2[deduction]
                ord_eq_Eequiv_2[deduction] identity_\<nu>_def by metis
      }
      ultimately show "[(x\<^sup>P \<^bold>= y\<^sup>P) \<^bold>\<equiv> (x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
        using intro_elim_4_a CP by blast
    qed

  lemma ord_eq_E[PLM]:
    "[(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr>) \<^bold>\<rightarrow> ((\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>) \<^bold>\<rightarrow> x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
    proof (rule CP; rule CP)
      assume ord_xy: "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> in v]"
      assume "[\<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr> in v]"
      hence "[\<lparr>\<^bold>\<lambda> z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P, x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>\<^bold>\<lambda> z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P, y\<^sup>P\<rparr> in v]"
        by (rule "\<^bold>\<forall>E")
      moreover have "[\<lparr>\<^bold>\<lambda> z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P, x\<^sup>P\<rparr> in v]"
        apply (rule beta_C_meta_1[equiv_rl])
        unfolding identity\<^sub>E_infix_def
         apply show_proper
        using ord_eq_Eequiv_1[deduction] ord_xy[conj1]
        identity\sub>infix_defby simp
      ultimately have "[\<lparr>\<^bold>\<lambda> z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P, y\<^sup>P\<rparr> in v]"
        using "\<^bold>\<equiv>E" by blast
      hence "[y\<^sup>P \<^bold>=\<^sub>E x\<^sup>P in v]"
        unfolding identity\<^sub>E_infix_def
        apply (safe intro!:
            beta_C_meta_1[where \<phi> = "\<lambda> z . \<lparr>basic_identity\<^sub>E,z,x\<^sup>P\<rparr>", equiv_lr])
        by show_proper
      thus "[x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P in v]"
        by (rule ord_eq_Eequiv_2[deduction])
    qed

  lemma ord_eq_E2[PLM]:
    "[(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr>) \<^bold>\<rightarrow>
      ((x\<^sup>P
    proof (rule CP; rule "\<^bold>\<equiv>I"; rule CP)
      assume ord_xy: "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> in v]"
      assume "[x\<^sup>P \<^bold>\<noteq> y\<^sup>P in v]"
      hence "[\<^bold>\<not>(x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
        using eq_E_simple_2 modus_tollens_1 by fast
      moreover {
        assume "[(\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P) \<^bold>= (\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
        moreover have "[\<lparr>\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P, x\<^sup>P\<rparr> in v]"
          apply (rule beta_C_meta_1[equiv_rl])
          unfolding identity\<^sub>E_infix_def
           apply
          using ord_eq_Eequiv_1[deduction] ord_xy[conj1]
          unfolding identity\<^sub>E_infix_def by presburger
        ultimately have "[\<lparr>\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E y\<^sup>P, x\<^sup>P\<rparr> in v]"
          using l_identity[axiom_instance, deduction, deduction] by fast
        hence "[x\<^sup>P \<^bold>=\<^sub>E y\<^sup>P in v]"
          unfolding identity\<^sub>E_infix_def
          apply (safe intro!:
              beta_C_meta_1[where \<phi> = "\<lambda> z . \<lparr>basic_identity\<^sub>E,z,y\<^sup>P\<rparr>", equiv_lr])
           show_proper
      }
      ultimately show "[(\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P) \<^bold>\<noteq> (\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
        using modus_tollens_1 CP by blast
    next
      assume ord_xy: "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>& \<lparr>O!,y\<^sup>P\<rparr> in v]"
      assume "[(\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P) \<^bold>\<noteq> (\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
      moreover {
        assume "[x\<^sup>P \<^bold>= y\<^sup>P in v]"
        hence "[(\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E x\<^sup>P) \<^bold>= (\<^bold>\<lambda>z . z\<^sup>P \<^bold>=\<^sub>E y\<^sup>P) in v]"
          using id_eq_1 l_identity[axiom_instance, deduction, deduction]
          by fast
      }
      ultimately show "[x\<^sup>P \<^bold>\<noteq> y\<^sup>P in v]"
        using modus_tollens_1 CP by blast
    qed

  lemma ab_obey_1[PLM]:
    "[(\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr>) \<^bold>\<rightarrow> ((\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P, F\<rbrace>) \<^bold>\<rightarrow> x\<^sup>P \<^bold>= y\<^sup>P) in v]"
    proof(rule CP; rule CP)
      assume abs_xy: "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> in v]"
      assume enc_equiv: "[\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P, F\<rbrace> in v]"
      {
        fix P
        have "[\<lbrace>x\<^sup>P, P\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P, P\<rbrace> in v]"
          using enc_equiv by (rule "\<^bold>\<forall>E")
        hence "[\<^bold>\<box>(\<lbrace>x\<^sup>P, P\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P, P\<rbrace>) in v]"
          using en_eq_2 intro_elim_6_e intro_elim_6_f
                en_eq_5[equiv_rl] by meson
      }
. \<>x\supP\<bold\equiv <lbracey\<sup>,<>)in v]
        using BF[deduction] "\<^bold>\<forall\>
      thus "[x\<^sup>P \<^bold>= y\<^sup>P in v]"
        unfolding identity_defs
        using "\<^bold>\<or>I"(2) abs_xy "\<^bold>&I" by presburger
    qed

  lemma ab_obey_2[PLM]:
    lparr,\<^>\<rparr \<bold>&\<parr>!y\<^sup><rparr> <bold\<rightarrow>(\^old>\<exists>F.<>x\\<^up>P \<><bold& \<bold\<ot>\lbracey<supP,F\rbrace)\^bold\<ightarrow> \<^sup>P\<^bold\noteq \^>P  v"
    proof(rule CP; rule CP)
      assume abs_xy: "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> in v]"
      [^bold\>  <>\^>P, F<>\^bold> \^><>\<lbracelbrace>y\<^>,F<>in ]"

        "[\<lbrace>x\<^sup>P, P\<rbrace> \<^bold>& \<^bold>\<not>\<lbrace>y\<^sup>P, P\<rbrace> in v]"
        by      " ll_deduct_subst p p f (ill_deduct_simple_limpR_exp)=
      {
        assume "[x\<^sup>P \<^bold>= y\<^sup>Ptext\<openjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
        hence "[\<lbrace>x\<^sup>P, P\<rbrace> \<^bold>\<equiv> \<lbrace>y\<^sup>P, P\<rbrace> in v]"
          using l_identity[axiom_instance, deduction, deduction]
                oth_class_taut_4_a by fast
        hence "[\<lbrace>y\<^sup>P, P\<rbrace> in v]"
          using P_prop[conj1] by (rule "\<^bold>\<equiv>E")
      }
      thus "[x\<^sup>P \<^bold>\<noteq> y\<^sup>P in v]"
        using P_prop[conj2] modus_tollens_1 CP by blast
    qed

  lemma ordnecfail[PLM]:
    "[\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> \<^bold>\<box>(\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P, F\<rbrace>)) in v]"
    proof (rule CP)
      assume "[\<lparr>O!,x\<^sup>P\<rparr> in v]"
      hence "[\<^bold>\<box>\<lparr>O!,x\<^sup>P\<rparr> in v]"
        using oa_facts_1[deduction] by simp
      moreover hence "[\<^bold>\<box>(\<lparr>O!,x\<^sup>P\<rparr> \<^bold>\<rightarrow> (\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P, F\<rbrace>))) in v]"
        using nocoder[axiom_necessitation, axiom_instance] by simp
      ultimately show "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P, F\<rbrace>)) in v]"
        using qml_1[axiom_instance, deduction, deduction] by fast
    qed

  lemma o_objects_exist_1[PLM]:
    "[\<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr>) in v]"
    proof -
      have "[\<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)) in v]"
        using qml_4[axiom_instance, conj1] .
      hence "[\<^bold>\<diamond>((\<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr>) \<^bold>& (\<^bold>\<exists> x . \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>))) in v]"
        using sign_S5_thm_3[deduction] by fast
      hence "[\<^bold>\<diamond>(\<^bold>\<exists> x . \<lparr>E!,x\<^sup>P\<rparr>) \<^bold>& \<^bold>\<diamond>(\<^bold>\<exists> x . \<^bold>\<diamond>(\<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)) in v]"
        using KBasic2_8[deduction] by blast
      thus ?thesis using "\<^bold>&E" by blast
    qed

  lemma o_objects_exist_2[PLM]:
    "[\<^bold>\<box>(\<^bold>\<exists> x . \<lparr>O!,x\<^sup>P\<rparr>) in v]"
    apply (rule RN) unfolding Ordinary_def
    apply (PLM_subst_method  "\<lambda> x . \<^bold>\<diamond>\<lparr>E!,x\<^sup>P\<rparr>" "\<lambda> x . \<lparr>\<^bold>\<lambda>y. \<^bold>\<diamond>\<lparr>E!,y\<^sup>P\<rparr>, x\<^sup>P\<rparr>")
     apply (safe intro!: beta_C_meta_1[equiv_sym])
     apply show_proper
    using o_objects_exist_1 "BF\<^bold>\<diamond>"[deduction] by blast

  lemma o_objects_exist_3[PLM]:
    "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<forall> x . \<lparr>A!,x\<^sup>P\<rparr>)) in v]"
    apply (PLM_subst_method "(\<^bold>\<exists>x. \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>)" "\<^bold>\<not>(\<^bold>\<forall>x. \<lparr>A!,x\<^sup>P\<rparr>)")
     using cqt_further_2[equiv_sym] apply fast
    apply (PLM_subst_method "\<lambda> x . \<lparr>O!,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<lparr>A!,x\<^sup>P\<rparr>")
    using oa_contingent_2 o_objects_exist_2 by auto

  lemma a_objects_exist_1[PLM]:
    "[\<^bold>\<box>(\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr>) in v]"
    proof -
      {
        fix v
       \^old>\existsx\lparrA,\<supP\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>= F)) in v]"
          using A_objects[axiom_instance] by simp
        hence "[\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr> in v]"
          using cqt_further_5[deduction,conj1] by fast
      }
      thus ?thesis by (rule RN)
    qed

  lemma a_objects_exist_2[PLM]:
    "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<forall> x . \<lparr>O!,x\<^sup>P\<rparr>)) in v]"
    apply (PLM_subst_method "(\<^bold>\<exists>x. \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>)" "\<^bold>\<not>(\<^bold>\<forall>x. \<lparr>O!,x\<^sup>P\<rparr>)")
     using cqt_further_2[equiv_sym] apply fast
    apply (PLM_subst_method "\<lambda> x . \<lparr>A!,x\<^sup>P\<rparr>" "\<lambda> x . \<^bold>\<not>\<lparr>O!,x\<^sup>P\<rparr>")
     using oa_contingent_3 a_objects_exist_1 by auto

  lemma a_objects_exist_3[PLM]:
    "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<forall> x . \<lparr>E!,x\<^sup>P\<rparr>)) in v]"
    proof -
      {
        fix v
        have "[\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>= F)) in v]"
          using A_objects[axiom_instance] by simp
        hence "[\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr> in v]"
          using cqt_further_5[deduction,conj1] by fast
        then obtain a where
          "[\<lparr>A!,a\<^sup>P\<rparr> in v]"
          by (rule "\<^bold>\<exists>E")
        hence "[\<^bold>\<not>(\<^bold>\<diamond>\<lparr>E!,a\<upP<>) inv]
          unfolding Abstract_def
          apply (safe intro!: beta_C_meta_1[equiv_lr\penz1\<noteq>z\<close> \<open>z2 \<noteq> z\<close>
          by show_proper
        hence "[(\<^bold\not>\<lparrE<P\<rparr>) in v]"
          using KBasic2_4[equiv_rl] qml_2[axiom_instance,deduction]
          by simp
        hence "[\<^bold>\<not>(\<^bold>\<forall> x . \lparrE!,x\<^sup>P\<rparr>) in v]"
          bold\<exists>I" cqt_further_2[equiv_rl]
          by fast  
      }
      thus ?thesis
        by (rule RN)
    qedthenhave<angle_c A C B \<in> {-pi<..<pi}\<close> 

  lemma encoders_are_abstract[PLM]:
    <><exists> F . \<lbrace>x\<^sup>P, F\<rbrace>) \<^bold>\<rightarrow> \<lparr>A!,x\<^sup>P\<rparr> in v"
    using nocoder[axiom_instance] contraposition_2
          contingent_2ENoth_class_taut_5_dv_lr quiv_lr
          useful_tautologies_1[deduction]
          vdash_properties_10 CP by metis

  lemma A_objects_unique[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\equiv \<phi> )in]"
    proof -
      have "[\<^bold>\<exists> x . \<lparr>A!,x\<^supP<> \<^bold> (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
usingA_objectsinstance mp
      then obtain a where a_prop:
        "[\<java.lang.StringIndexOutOfBoundsException: Index 389 out of bounds for length 389
      moreover have "[bold>\> y . \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F) \<^bold>\<rightarrow> (y \<^bold>= a) in v]"
        proof (rule "\<^bold>\<forall>I"; rule CP)
          fix b
          assume b_prop: "[\<lparr>A!,b\<^sup>P\<rparr> \<old\^old>\forall F . \<lbrace>b\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
          {
      
            have "><P,P\<rbrace> \<^bold>\<equiv> \<lbrace>a\<^sup>P,P<rbrace in v]"
              using a_prop[conj2] b_prop[conj2] "\<^bold>\<equiv>I" "\<^bold>\<equiv>E"(1) "\<^bold>\<equiv>E"(2)
                    CP vdash_properties_10 "\<^bold>\<all"bymetis
          }
          hence "[\<^bold>\<forall> F . \<lbrace>b\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>a\<^sup>P, F\<rbrace> in v]"
            ><forall>I" by fast
          thus "[b \> a in v]"
            ding\>_def
         b_obey_1ion duction]
                  then
        qed
      ultimately show ?thesis
        unfolding exists_unique_def
        using "\<^bold>&I" "\<^bold>\<exists>I" by fast
    qed

  lemma obj_oth_1[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<lparr>F, y\<^sup>P\<rparr>) in v]"
    using A_objects_unique .

  lemma obj_oth_2[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<lparr>F, y\<^sup>P\<rparr> \<^bold>& \<lparr>F, z\<^sup>P\<rparr>)) in v]"
    using A_objects_unique .

  lemma obj_oth_3[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<lparr>F, y\<^sup>P\<rparr> \<^bold>\<or> \<lparr>F, z\<^sup>P\<rparr>)) in v]"
    using A_objects_unique .

  lemma obj_oth_4[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<^bold>\<box>\<lparr>F, y\<^sup>P\<rparr>)) in v]"
    using A_objects_unique .

  lemma obj_oth_5[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>= G)) in v]"
    using A_objects_unique .

  lemma obj_oth_6[PLM]:
    "[\<^bold>\<exists>! x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<^bold>\<box>(\<^bold>\<forall> y . \<lparr>G, y\<^sup>P\<rparr> \<^bold>\<rightarrow> \<lparr>F, y\<^sup>P\<rparr>)) in v]"
    using A_objects_unique .

  lemma A_Exists_1[PLM]:
    "[\<^bold>\<A>(\<^bold>\<exists>! x :: ('a :: id_act) . \<phi> x) \<^bold>\<equiv> (\<^bold>\<exists>! x . \<^bold>\<A>(\<phi> x)) in v]"
    unfolding exists_unique_def
    proof (rule "\<^bold>\<equiv>I"; rule CP)
      assume "[\<^bold>\<A>(\<^bold>\<exists>\<alpha>. \<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
      hence "[\<^bold>\<exists>\<alpha>. \<^bold>\<A>(\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
        using Act_Basic_11[equiv_lr] by blast
      then obtain \<alpha> where
        "[\<^bold>\<A>(\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
        by (rule "\<^bold>\<exists>E")
      hence 1: "[\<^bold>\<A>(\<phi> \<alpha>) \<^bold>& \<^bold>\<A>(\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        using Act_Basic_2[equiv_lr] by blast
      have 2: "[\<^bold>\<forall>\<beta>. \<^bold>\<A>(\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        using 1[conj2] logic_actual_nec_3[axiom_instance, equiv_lr] by blast
      {
        fix \<beta>
        have "[\<^bold>\<A>(\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
          using 2 by (rule"\^bold>\forall>E)
        hence "[\<^bold>\<A>(\<phi> \<beta>) \<^bold>\<rightarrow> (\<beta> \<^bold>= \<alpha>) in v]"
          using logic_actual_nec_2[axiom_instance, equiv_lr, deduction]
                id_act_3[equiv_rl] CP by blast
      }
hence"[\^bold><forall> \<beta>. <^bold>\<A>(\<phi> \<beta>) \<bold>\<rightarrow> (<beta> \^bold>= \<alpha\<alpha>) in v]
        by (rule "\<^bold>\<forall>I")
      thus "[\<^bold>\<exists>\<alpha>. \<^bold>\<A>\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<^bold>\<A>\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        using 1[conj1] "\<^bold>&I" "\<^bold>\<exists>I" by fast
    next
      assume "[\<^bold>\<exists>\<alpha>. \<^bold>\<A>\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<^bold>\<A>\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
      then obtain \<alpha> where 1:
        "[\<^bold>\<A>\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<^bold>\<A>\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        by (rule "\<^bold>\<exists>E")
      {
        fix \<beta>
        have "[\<^bold>\<A>(\<phi> \<beta>) \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha> in v]"
          using 1[conj2] by (rule "\<^bold>\<forall>E")
        hence "[\<^bold>\<A>(\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
          using logic_actual_nec_2[axiom_instance, equiv_rl] id_act_3[equiv_lr]
                vdash_properties_10 CP by blast
      }
      hence "[\<^bold>\<forall> \<beta> . \<^bold>\<A>(\<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        by (rule "\<^bold>\<forall>I")
      hence "[\<^bold>\<A>(\<^bold>\<forall> \<beta> . \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>) in v]"
        using logic_actual_nec_3[axiom_instance, equiv_rl] by fast
      hence "[\<^bold>\<A>(\<phi> \<alpha> \<^bold>& (\<^bold>\<forall> \<beta> . \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
        using 1[conj1] Act_Basic_2[equiv_rl] "\<^bold>&I" by blast
      hence "[\<^bold>\<exists>\<alpha>. \<^bold>\<A>(\<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
        using "\<^bold>\<exists>I" by fast
      thus "[\<^bold>\<A>(\<^bold>\<exists>\<alpha>. \<phi> \<alpha> \<^bold>& (\<^bold>\<forall>\<beta>. \<phi> \<beta> \<^bold>\<rightarrow> \<beta> \<^bold>= \<alpha>)) in v]"
        using Act_Basic_11[equiv_rl] by fast
    qed

  lemma A_Exists_2[PLM]:
    "[(\<^bold>\<exists> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<phi> x)) \<^bold>\<equiv> \<^bold>\<A>(\<^bold>\<exists>!x . \<phi> x) in v]"
    using actual_desc_1 A_Exists_1[equiv_sym]
          intro_elim_6_e by blast

  lemma A_descriptions[PLM]:
    "[\<^bold>\<exists> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
    using A_objects_unique[THEN RN, THEN nec_imp_act[deduction]]
          A_Exists_2[equiv_rl] by auto

  lemma thm_can_terms2[PLM]:
    "[(y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)))
      \<^bold>\<rightarrow> (\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>y\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in dw]"
    using y_in_2 by auto

  lemma can_ab2[PLM]:
    "[(y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F))) \<^bold>\<rightarrow> \<lparr>A!,y\<^sup>P\<rparr> in v]"
    proof (rule CP)
      assume "[y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
      hence "[\<^bold>\<A>\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& \<^bold>\<A>(\<^bold>\<forall> F . \<lbrace>y\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
        using nec_hintikka_scheme[equiv_lr, conj1]
              Act_Basic_2[equiv_lr] by blast
      thus "[\<lparr>A!,y\<^sup>P\<rparr> in v]"
        using oa_facts_8[equiv_rl] "\<^bold>&E" by blast
    qed

  lemma desc_encode[PLM]:
    "[\<lbrace>\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F), G\<rbrace> \<^bold>\<equiv> \<phi> G in dw]"
    proof -
      obtain a where
        "[a\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in dw]"
        using A_descriptions by (rule "\<^bold>\<exists>E")
      moreover hence "[\<lbrace>a\<^sup>P, G\<rbrace> \<^bold>\<equiv> \<phi> G in dw]"
        using hintikka[equiv_lr, conj1] "\<^bold>&E" "\<^bold>\<forall>E" by fast
      ultimately show ?thesis
        using l_identity[axiom_instance, deduction, deduction] by fast
    qed

  lemma desc_nec_encode[PLM]:
    "[\<lbrace>\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F), G\<rbrace> \<^bold>\<equiv> \<^bold>\<A>(\<phi> G) in v]"
    proof -
      obtain a where
        "[a\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
        using A_descriptions by (rule "\<^bold>\<exists>E")
      moreover {
        hence "[\<^bold>\<A>(\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
          using nec_hintikka_scheme[equiv_lr, conj1] by fast
        hence "[\<^bold>\<A>(\<^bold>\<forall> F . \<lbrace>a\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
          using Act_Basic_2[equiv_lr,conj2] by blast
        hence "[\<^bold>\<forall> F . \<^bold>\<A>( \<lbrace>a\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
          using logic_actual_nec_3[axiom_instance, equiv_lr] by blast
        hence "[\<^bold>\<A>(\<lbrace>a\<^sup>P, G\<rbrace> \<^bold>\<equiv> \<phi> G) in v]"
          using "\<^bold>\<forall>E" by fast
        hence "[\<^bold>\<A>\<lbrace>a\<^sup>P, G\<rbrace> \<^bold>\<equiv> \<^bold>\<A>(\<phi> G) in v]"
          using Act_Basic_5[equiv_lr] by fast
        hence "[\<lbrace>a\<^sup>P, G\<rbrace> \<^bold>\<equiv> \<^bold>\<A>(\<phi> G) in v]"
          using en_eq_10[equiv_sym] intro_elim_6_e by blast
      }
      ultimately show ?thesis
        using l_identity[axiom_instance, deduction, deduction] by fast
    qed

notepad
  begin
      fix v
      let ?x = "\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<^bold>\<exists> q . q \<^bold>& F \<^bold>= (\<^bold>\<lambda> y . q)))"
      have "[\<^bold>\<box>(\<^bold>\<exists> p . ContingentlyTrue p) in v]"
        using cont_tf_thm_3 RN by auto
      hence "[\<^bold>\<A>(\<^bold>\<exists> p . ContingentlyTrue p) in v]"
        using nec_imp_act[deduction] by simp
      hence "[\<^bold>\<exists> p . \<^bold>\<A>(ContingentlyTrue p) in v]"
        using Act_Basic_11[equiv_lr] by auto
      then obtain p\<^sub>1 where
        "[\<^bold>\<A>(ContingentlyTrue p\<^sub>1) in v]"
        by (rule "\<^bold>\<exists>E")
      hence "[\<^bold>\<A>p\<^sub>1 in v]"
        unfolding ContingentlyTrue_def
        using Act_Basic_2[equiv_lr] "\<^bold>&E" by fast
      hence "[\<^bold>\<A>p\<^sub>1 \<^bold>& \<^bold>\<A>((\<^bold>\<lambda> y . p\<^sub>1) \<^bold>= (\<^bold>\<lambda> y . p\<^sub>1)) in v]"
        using "\<^bold>&I" id_eq_1[THEN RN, THEN nec_imp_act[deduction]] by fast
      hence "[\<^bold>\<A>(p\<^sub>1 \<^bold>& (\<^bold>\<lambda> y . p\<^sub>1) \<^bold>= (\<^bold>\<lambda> y . p\<^sub>1)) in v]"
        using Act_Basic_2[equiv_rl] by fast
      hence "[\<^bold>\<exists> q . \<^bold>\<A>( q \<^bold>& (\<^bold>\<lambda> y . p\<^sub>1) \<^bold>= (\<^bold>\<lambda> y . q)) in v]"
        using "\<^bold>\<exists>I" by fast
      hence "[\<^bold>\<A>(\<^bold>\<exists> q . q \<^bold>& (\<^bold>\<lambda> y . p\<^sub>1) \<^bold>= (\<^bold>\<lambda> y . q)) in v]"
        using Act_Basic_11[equiv_rl] by fast
      moreover have "[\<lbrace>?x, \<^bold>\<lambda> y . p\<^sub>1\<rbrace> \<^bold>\<equiv> \<^bold>\<A>(\<^bold>\<exists> q . q \<^bold>& (\<^bold>\<lambda> y . p\<^sub>1) \<^bold>= (\<^bold>\<lambda> y . q)) in v]"
        using desc_nec_encode by fast
      ultimately have "[\<lbrace>?x, \<^bold>\<lambda> y . p\<^sub>1\<rbrace> in v]"
        using "\<^bold>\<equiv>E" by blast
  end

  lemma Box_desc_encode_1[PLM]:
    "[\<^bold>\<box>(\<phi> G) \<^bold>\<rightarrow> \<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace> in 
    proof (rule CP)
      assume "[\<^bold>\<box>(\<phi> G) in v]"
      hence "[\<^bold>\<A>(\<phi> G) in v]"
        using nec_imp_act[deduction] by auto
      thus "[\<lbrace>\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F), G\<rbrace> in v]"
        using desc_nec_encode[equiv_rl] by simp
    qed

  lemma Box_desc_encode_2[PLM]:
    "[\<^bold>\<box>(\<phi> G) \<^bold>\<rightarrow> \<^bold>\<box>(\<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace> \<^bold>\<equiv> \<phi> G) in v]"
    proof (rule CP)
      assume a: "[\<^bold>\<box>(\<phi> G) in v]"
      hence "[\<^bold>\<box>(\<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F))\rbrace\oldrightarrow \<phi> G) n
        using KBasic_1eductionymp
      moreover {
        have "[\<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace> in v]"
          using a Box_desc_encode_1[deduction] by auto
        hence "[\<^bold>\<box>\<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace> in v]"
          using encoding[axiom_instance,deduction] by blast
        hence "[\<^bold>\<box>(\<phi> G \<^bold>\<rightarrow>  \<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace>) in v]"
          using KBasic_1[deduction] by simp
      }
      ultimately show "[\<^bold>\<box>(\<lbrace>(\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>&n> (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)), G\<rbrace>
                        \<^bold>\<equiv> \<phi> G) in v]"
        using "\<^bold>&I" KBasic_4[equiv_rl] by blast
    qed

  lemma box_phi_a_1[PLM]:
    assumes "[\<^bold>\<box>(\<^bold>\<forall> F . \<phi> F \<^bold>\<rightarrow> \<^bold>\<box>(\<phi> F)) in v]"
    shows "[(\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)) \<^bold>\<rightarrow> \<^bold>\<box>(\<lparr>A!,x\<^sup>P\<rparr>
            \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
    proof (rule CP)
      assume a: "[(\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
      have "[\<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
        using oa_facts_2[deduction] a[conj1] by auto
      moreover have "[\<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
        proof (rule BF[deduction]; rule "\<^bold>\<forall>I")
          fix F
          have \<theta>: "[\<^bold>\<box>(\<phi> F \<^bold>\<rightarrow> \<^bold>\<box>(\<phi> F)) in v]"
            using assms[THEN CBF[deduction]] by (rule "\<^bold>\<forall>E")
          moreover have "[\<^bold>\<box>(\<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<rightarrow> \<^bold>\<box>\<lbrace>x\<^sup>P, F\<rbrace>) in v]"
            using encoding[axiom_necessitation, axiom_instance] by simp
          moreover have "[\<^bold>\<box>\<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<^bold>\<box>(\<phi> F) in v]"
            proof (rule "\<^bold>\<equiv>I"; rule CP)
              assume "[\<^bold>\<box>\<lbrace>x\<^sup>P, F\<rbrace> in v]"
              hence "[\<lbrace>x\<^sup>P, F\<rbrace> in v]"
                using qml_2[axiom_instance, deduction] by blast
              hence "[\<phi> F in v]"
                using a[conj2] "\<^bold>\<forall>E"[where 'a=\<Pi>\<^sub>1] "\<^bold>\<equiv>E" by blast
              thus "[\<^bold>\<box>(\<phi> F) in v]"
                using \<theta>[THEN qml_2[axiom_instance, deduction], deduction] by simp
            next
              assume "[\<^bold>\<box>(\<phi> F) in v]"
              hence "[\<phi> F in v]"
                using qml_2[axiom_instance, deduction] by blast
              hence "[\<lbrace>x\<^sup>P, F\<rbrace> in v]"
                using a[conj2] "\<^bold>\<forall>E"[where 'a=\<Pi>\<^sub>1] "\<^bold>\<equiv>E" by blast
              thus "[\<^bold>\<box>\<lbrace>x\<^sup>P, F\<rbrace> in v]"
                using encoding[axiom_instance, deduction] by simp
            qed
          ultimately show "[\<^bold>\<box>(\<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
            using sc_eq_box_box_3[deduction, deduction] "\<^bold>&I" by blast
        qed
      ultimately show "[\<^bold>\<box>(\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall>F. \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
       using "\<^bold>&I" KBasic_3[equiv_rl] by blast
    qed

  lemma box_phi_a_2[PLM]:
    assumes "[\<^bold>\<box>(\<^bold>\<forall> F . \<phi> F \<^bold>\<rightarrow> \<^bold>\<box>(\<phi> F)) in v]"
    shows "[y\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F. \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F))
            \<^bold>\<rightarrow> (\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
    proof -
      let ?\<psi> = "\<lambda> x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)"
      have "[\<^bold>\<forall> x . ?\<psi> x \<^bold>\<rightarrow> \<^bold>\<box>(?\<psi> x) in v]"
        using box_phi_a_1[OF assms] "\<^bold>\<forall>I" by fast
      hence "[(\<^bold>\<exists>! x . ?\<psi> x) \<^bold>\<rightarrow> (\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> x) \<^bold>\<rightarrow> ?\<psi> y) in v]"
        using unique_box_desc[deduction] by fast
      hence "[(\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> x) \<^bold>\<rightarrow> ?\<psi> y) in v]"
        using A_objects_unique modus_ponens by blast
      thus ?thesis by (rule "\<^bold>\<forall>E")
   qed

  lemma box_phi_a_3[PLM]:
    assumes "[\<^bold>\<     assume 1: "[\^bold>\<>(<phi <^bold\rightarrow \<^bold>box\phi> in v"
    shows "[\<lbrace>\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F), G\<rbrace> \<^bold>\<equiv> \<phi> G in v]"
    proof -
      obtain a where
        "[a\<^sup>P \<^bold>= (\<^bold>\<iota>x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F)) in v]"
        using A_descriptions by (rule "\<^bold>\<exists>E")
      moreover {
        hence "[(\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<phi> F) in v]"
          using box_phi_a_2[OF assms, deduction, conj2] by blast
        hence "[\<lbrace>a\<^sup>P, G\<rbrace> \<^bold>\<equiv> \<phi> G in v]" by (rule "\<^bold>\<forall>E")
      }
      ultimately show ?thesis
        using l_identity[axiom_instance, deduction, deduction] by fast
    qed

  lemma null_uni_uniq_1[PLM]:
    "[\<^bold>\<exists>! x . Null (x\<^sup>P) in v]"
    proof -
      have "[\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>\<noteq> F)) in v]"
        using A_objects[axiom_instance] by simp
      then obtain a where a_prop:
        "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>\<noteq> F)) in v]"
        by (rule "\<^bold>\<exists>E")
      have 1: "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>a\<^sup>P, F\<rbrace>)) in v]"
        using a_prop[conj1] apply (rule "\<^bold>&I")
        proof -
          {
            assume "[\<^bold>\<exists> F . \<lbrace>a\<^sup>P, F\<rbrace> in v]"
            then obtain P where
              "[\<lbrace>a\<^sup>P, P\<rbrace> in v]" by (rule "\<^bold>\<exists>E")
            hence "[P \<^bold>\<noteq> P in v]"
              using a_prop[conj2, THEN "\<^bold>\<forall>E", equiv_lr] by simp
            hence "[\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>a\<^sup>P, F\<rbrace>) in v]"
              using id_eq_1 reductio_aa_1 by fast
          }
          thus "[\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>a\<^sup>P, F\<rbrace>) in v]"
            using reductio_aa_1 by blast
        qed
      moreover have "[\<^bold>\<forall> y . (\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>y\<^sup>P, F\<rbrace>))) \<^bold>\<rightarrow> y \<^bold>= a in v]"
        proof (rule "\<^bold>\<forall>I"; rule CP)
          fix y
          assume 2: "[\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>y\<^sup>P, F\<rbrace>)) in v]"
          have "[\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<lbrace>a\<^sup>P, F\<rbrace> in v]"
            using cqt_further_12[deduction] 1[conj2] 2[conj2] "\<^bold>&I" by blast
          thus "[y \<^bold>= a in v]"
            using ab_obey_1[deduction, deduction]
            "\<^bold>&I"[OF 2[conj1] 1[conj1]] identity_\<nu>_def by presburger
        qed
      ultimately show ?thesis
        using "\<^bold>&I" "\<^bold>\<exists>I"
        unfolding Null_def exists_unique_def by fast
    qed

  lemma null_uni_uniq_2[PLM]:
    "[\<^bold>\<exists>! x . Universal (x\<^sup>P) in v]"
    proof -
      have "[\<^bold>\<exists> x . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>= F)) in v]"
        using A_objects[axiom_instance] by simp
      then obtain a where a_prop:
        "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> (F \<^bold>= F)) in v]"
        by (rule "\<^bold>\<exists>E")
      have 1: "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace>) in v]"
        using a_prop[conj1] apply (rule "\<^bold>&I")
        using "\<^bold>\<forall>I" a_prop[conj2, THEN "\<^bold>\<forall>E", equiv_rl] id_eq_1 by fast
      moreover have "[\<^bold>\<forall> y . (\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace>)) \<^bold>\<rightarrow> y \<^bold>= a in v]"
        proof (rule "\<^bold>\<forall>I"; rule CP)
          fix y
          assume 2: "[\<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace>) in v]"
          have "[\<^bold>\<forall> F . \<lbrace>y\<^sup>P, F\<rbrace> \<^bold>\<equiv> \<lbrace>a\<^sup>P, F\<rbrace> in v]"
            using cqt_further_11[deduction] 1[conj2] 2[conj2] "\<^bold>&I" by blast
          thus "[y \<^bold>= a in v]"
            using ab_obey_1[deduction, deduction]
              "\<^bold>&I"[OF 2[conj1] 1[conj1]] identity_\<nu>_def
            by presburger
        qed
      ultimately show ?thesis
        using "\<^bold>&I" "\<^bold>\<exists>I"
        unfolding Universal_def exists_unique_def by fast
    qed

  lemma null_uni_uniq_3[PLM]:
    "[\<^bold>\<exists> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . Null (x\<^sup>P)) in v]"
    using null_uni_uniq_1[THEN RN, THEN nec_imp_act[deduction]]
          A_Exists_2[equiv_rl] by auto

  lemma null_uni_uniq_4[PLM]:
    "[\<^bold>\<exists> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . Universal (x\<^sup>P)) in v]"
  [HEN_teduction
          [equiv_rl]byjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38

  lemma null_uni_facts_1[PLM]:
    "[Null (x\<^sup>P) \<^bold>\<rightarrow> \<^bold>\<box>(Null (x\<^sup>P)) in v]"
    proof (rule CP)
      assume "[Null (x\<^sup>P) in v]"
      hence 1: "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P,F\<rbrace>)) in v]"
        unfolding Null_def .
      have "[\<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
        using 1[conj1] oa_facts_2[deduction] by simp
      moreover have "[\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P,F\<rbrace>)) in v]"
        proof -
          {
            assume "[\<^bold>\<not>\<^bold>\<box>(\<^bold>\<not>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P,F\<rbrace>)) in v]"
            hence "[\<^bold>\<diamond>(\<^bold>\<exists> F . \<lbrace>x\<^sup>P,F\<rbrace>) in v]"
              unfolding diamond_def .
            hence "[\<^bold>\<exists> F . \<^bold>\<diamond>\<lbrace>x\<^sup>P,F\<rbrace> in v]"
              using "BF\<^bold>\<diamond>"[deduction] by blast
            then obtain P where "[\<^bold>\<diamond>\<lbrace>x\<^sup>P,P\<rbrace> in v]"
              by (rule "\<^bold>\<exists>E")
            hence "[\<lbrace>x\<^sup>P, P\<rbrace> in v]"
              using en_eq_3[equiv_lr] by simp
            hence "[\<^bold>\<exists>  F . \<lbrace>x\<^sup>P, F\<rbrace> in v]"
              using "\<^bold>\<exists>I" by fast
          }
          thus ?thesis
            using 1[conj2] modus_tollens_1 CP
                  useful_tautologies_1[deduction] by metis
        qed
      ultimately show "[\<^bold>\<box>Null (x\<^sup>P) in v]"
        unfolding Null_def
        using "\<^bold>&I" KBasic_3[equiv_rl] by blast
    qed

  lemma null_uni_facts_2[PLM]:
    "[Universal (x\<^sup>P) \<^bold>\<rightarrow> \<^bold>\<box>(Universal (x\<^sup>P)) in v]"
    proof (rule CP)
      assume "[Universal (x\<^sup>P) in v]"
      hence 1: "[\<lparr>A!,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace>) in v]"
        unfolding Universal_def .
      have "[\<^bold>\<box>\<lparr>A!,x\<^sup>P\<rparr> in v]"
        using 1[conj1] oa_facts_2[deduction] by simp
      moreover have "[\<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P,F\<rbrace>) in v]"
        proof (rule BF[deduction]; rule "\<^bold>\<forall>I")
          fix F
          have "[\<lbrace>x\<^sup>P, F\<rbrace> in v]"
            using 1[conj2] by (rule "\<^bold>\<forall>E")
          thus "[\<^bold>\<box>\<lbrace>x\<^sup>P, F\<rbrace> in v]"
            using encoding[axiom_instance, deduction] by auto
        qed
      ultimately show "[\<^bold>\<box>Universal (x\<^sup>P) in v]"
        unfolding Universal_def
        using "\<^bold>&I" KBasic_3[equiv_rl] by blast
    qed

  lemma null_uni_facts_3[PLM]:
    "[Null (\<^bold>a\<^sub>\<emptyset>) in v]"
    proof -
      let ?\<psi> = "\<lambda> x . Null x"
      have "[((\<^bold>\<exists>! x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> (\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> ?\<psi> (y\<^sup>P))) in v]"
        using unique_box_desc[deduction] null_uni_facts_1[THEN "\<^bold>\<forall>I"] by fast
      have 1: "[(\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> ?\<psi> (y\<^sup>P)) in v]"
        using unique_box_desc[deduction, deduction] null_uni_uniq_1
              null_uni_facts_1[THEN "\<^bold>\<forall>I"] by fast
      have "[\<^bold>\<exists> y . y\<^sup>P \<^bold>= (\<^bold>a\<^sub>\<emptyset>) in v]"
        unfolding NullObject_def using null_uni_uniq_3 .
      then obtain y where "[y\<^sup>P \<^bold>= (\<^bold>a\<^sub>\<emptyset>) in v]"
        by (rule "\<^bold>\<exists>E")
      moreover hence "[?\<psi> (y\<^sup>P) in v]"
        using 1[THEN "\<^bold>\<forall>E", deduction] unfolding NullObject_def by simp
      ultimately show "[?\<psi> (\<^bold>a\<^sub>\<emptyset>) in v]"
        using l_identity[axiom_instance, deduction, deduction] by blast
    qed

  lemma null_uni_facts_4[PLM]:
    "[Universal (\<^bold>a\<^sub>V) in v]"
    proof -
      let ?\<psi> = "\<lambda> x . Universal x"
      have "[((\<^bold>\<exists>! x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> (\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> ?\<psi> (y\<^sup>P))) in v]"
        using unique_box_desc[deduction] null_uni_facts_2[THEN "\<^bold>\<forall>I"] by fast
      have 1: "[(\<^bold>\<forall> y . y\<^sup>P \<^bold>= (\<^bold>\<iota>x . ?\<psi> (x\<^sup>P)) \<^bold>\<rightarrow> ?\<psi> (y\<^sup>P)) in v]"
        using unique_box_desc[deduction, deduction] null_uni_uniq_2
              null_uni_facts_2[THEN "\<^bold>\<forall>I"] by fast
      have "[\<bold>\<exists y. y\^>P \<^bold>= (<bold>a\<subV)in ]"
        unfolding UniversalObject_def using null_uni_uniq_4 .
      then obtain y where "[y\<^sup>P \<^bold>= (\<^bold>a\<^sub>V) in v]"
        by (rule "\<^bold>\<exists>E")
      moreover hence "[?\<psi> (y\<^sup>P) in v]"
        using 1[THEN "\<^bold>\<forall>E", deduction]
        unfolding UniversalObject_def by simp
      ultimately show "[?\<psi> (\<^bold>a\<^sub>V) in v]"
        using l_identity[axiom_instance, deduction, deduction] by blast
    qed

  lemma aclassical_1[PLM]:
    "[\<^bold>\<forall> R . \<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (x \<^bold>\<noteq> y)
      \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,y\<^sup>P\<rparr>) in v]"
    proof (rule "\<^bold>\<forall>I")
      fix R
      obtain a where \<theta>:
        "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<^bold>\<exists> y . \<lparr>A!,y\<^sup>P\<rparr>
          \<^bold>& F \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,y\<^sup>P\<rparr>) \<^bold>& \<^bold>\<not>\<lbrace>y\<^sup>P, F\<rbrace>)) in v]"
        using A_objects[axiom_instance] by (rule "\<^bold>\<exists>E")
      {
        assume "[\<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
        hence "[\<^bold>\<not>(\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)
                \<^bold>& \<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace>) in v]"
          using \<theta>[conj2, THEN "\<^bold>\<forall>E", THEN oth_class_taut_5_d[equiv_lr], equiv_lr]
                cqt_further_4[equiv_lr] "\<^bold>\<forall>E" by fast
        hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)
                \<^bold>\<rightarrow> \<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
          apply - by PLM_solver
        hence "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
          using \<theta>[conj1] id_eq_1 "\<^bold>&I" vdash_properties_10 by fast
      }
      hence 1: "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
        using reductio_aa_1 CP if_p_then_p by blast
      then obtain b where \<xi>:
        "[\<lparr>A!,b\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,b\<^sup>P\<rparr>)
          \<^bold>& \<^bold>\<not>\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
        using \<theta>[conj2, THEN "\<^bold>\<forall>E", equiv_lr] "\<^bold>\<exists>E" by blast
      have "[a \<^bold>\<noteq> b in v]"
        proof -
          {
            assume "[a \<^bold>= b in v]"
            hence "[\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>)\<rbrace> in v]"
              using 1 l_identity[axiom_instance, deduction, deduction] by fast
            hence ?thesis
              using \<xi>[conj2] reductio_aa_1 by blast
          }
          thus ?thesis using reductio_aa_1 by blast
        qed
      hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,b\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> b
              \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,z\<^sup>P,b\<^sup>P\<rparr>) in v]"
        using \<theta>[conj1] \<xi>[conj1, conj1] \<xi>[conj1, conj2] "\<^bold>&I" by presburger
      hence "[\<^bold>\<exists> y . \<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> y
              \<^bold>& (\<^bold>\<lambda>z. \<lparr>R,z\<^sup>P,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>R,z\<^sup>P,y\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
      thus "[\<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& x \<^bold>\<noteq> y
             \<^bold>& (\<^bold>\<lambda>z. \<lparr>R,z\<^sup>P,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>R,z\<^sup>P,y\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
    qed

  lemma aclassical_2[PLM]:
    "[\<^bold>\<forall> R . \<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (x \<^bold>\<noteq> y)
      ^bold&(\^old\<ambda> z .\lparrRx\<sup>,\<sup>\<>) <bold=(<bold\lambda>z .\lparrRy<supPz<supP<>inv"
    proof (rule "\<^bold>\<forall>I")
      fix R
      obtain a where \<theta>:
        "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<^bold>\<exists> y . \<lparr>A!,y\<^sup>P\<rparr>
          \<^bold>& F \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,y\<^sup>P,z\<^sup>P\<rparr>) \<^bold>& \<^bold>\<not>\<lbrace>y\<^sup>P, F\<rbrace>)) in v]"
        using A_objects[axiom_instance] by (rule "\<^bold>\<exists>E")
      {
        assume "[\<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,zmoreoverhave\<nd\ <si.[<^bold\not\<>)\^bold><>\>inv <> (<bold><\> <
        hence "[\<^bold>\<not>(\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)
                \<^bold>& \<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambdajava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
          using \<theta>[conj2, THEN "\<^bold>\<forall>E", THEN oth_class_taut_5_d[equiv_lr], equiv_lr]
                cqt_further_4[equiv_lr] "\<^bold>\<forall>E" by fast
        hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)
                \<^bold>\<rightarrow> \<lbrace>a\<^sup>P, (\<^bold>   id_nec2_3PLM
          apply - by PLM_solver
        hence "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)\<rbrace> in v]"
          using \<theta>[conj1] id_eq_1 "\<^bold>&I" vdash_properties_10 by fast
      }
      hence 1: "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)\<rbrace> in v]"
        using reductio_aa_1 CP if_p_then_p by blast
      then obtain b where \<xi>:
        "[\<lparr>A!,b\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,b\<^sup>P,z\<^sup>P\<rparr>)
          \<^bold>& \<^bold>\<not>\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)\<rbrace> in v]"
        using \<theta>[conj2, THEN "\<^bold>\<forall>E", equiv_lr] "\<^bold>\<exists>E" by blast
      have "[a \<^bold>\<noteq> b in v]"
        proof -
          {
            assume "[a \<^bold>= b in v]"
            hence "[\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>)\<rbrace> in v]"
              using 1 l_identity[axiom_instance, deduction, deduction] by fast
            hence ?thesis using \<xi>[conj2] reductio_aa_1 byblast
          }
          thus ?thesis using \<xi>[conj2] reductio_aa_1 by blast
        qed
      hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,b\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> b
              \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,b\<^sup>P,z\<^sup>P\<rparr>) in v]"
        using \<theta>[conj1] \<xi>[conj1, conj1] \<xi>[conj1, conj2] "\<^bold>&I" by presburger
      hence "[\<^bold>\<exists> y . \<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> y
              \<^bold>& (\<^bold>\<lambda>z. \<lparr>R,a\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>R,y\<^sup>P,z\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
      thus "[\<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& x \<^bold>\<noteq> y
             \<^bold>& (\<^bold>\<lambda>z. \<lparr>R,x\<^sup>P,z\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>z. \<lparr>R,y\<^sup>P,z\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
    qed

  lemma aclassical_3[PLM]:
    "[\<^bold>\<forall> F . \<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& (x \<^bold>\<noteq> y)
      \<^bold>& ((\<^bold>\<lambda>\<^sup>0 \<lparr>F,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>\<^sup>0 \<lparr>F,y\<^sup>P\<rparr>)) in v]"
    proof (rule "\<^bold>\<forall>I")
      fix R
      obtain a where \<theta>:
        "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<forall> F . \<lbrace>a\<^sup>P, F\<rbrace> \<^bold>\<equiv> (\<^bold>\<exists> y . \<lparr>A!,y\<^sup>P\<rparr>
          \<^bold>& F \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,y\<^sup>P\<rparr>) \<^bold>& \<^bold>\<not>\<lbrace>y\<^sup>P, F\<rbrace>)) in v]"
        using A_objects[axiom_instance] by (rule "\<^bold>\<exists>E")
      {
        assume "[\<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
        hence "[\<^bold>\<not>(\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)
                \<^bold>& \<^bold>\<not>\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace>) in v]"
          <>conj2 THEN"<bold\<orallE, oth_class_taut_5_d] ]

        hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>using en_eq_4 en_eq_5oth_class_taut_4_a "<bold><>"6 bymeson
                \<^bold>\<rightarrow> \<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
          apply - by PLM_solver
        hence "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
          using \<theta>[conj1] id_eq_1 "\<^bold>&I" vdash_properties_10 by fast
      }
      hence 1: "[\<lbrace>a\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
        usingreductio_aa_1 CP if_p_then_p by blast
      then obtain b where \<xi>:
        "[\<lparr>A!,b\<^sup>P\<rparr> \<^bold>& (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda> z . \<lparr>R,b\<^sup>P\<rparr>)
          \<^bold>& \<^bold>\<not>\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
        using \<theta>[conj2, THEN "\<^bold>\<forall>E", equiv_lr] "\<^bold>\<exists>E" by blast
      have "[a \<^bold>\<noteq> b in v]"
        proof -
          {
            assume "[a \<^bold>= b in v]"
            hence "[\<lbrace>b\<^sup>P, (\<^bold>\<lambda> z . \<lparr>R,a\<^sup>P\<rparr>)\<rbrace> in v]"
              using 1 l_identity[axiom_instance, deduction, deduction] by fast
            hence ?thesis
              using \<xi>[conj2] reductio_aa_1 by blast
          }
          thus ?thesis using reductio_aa_1 by blast
        qed
      moreover {
        have "[\<lparr>R,a\<^sup>P\<rparr> \<^bold>= \<lparr>R,b\<^sup>P\<rparr> in v]"
          unfolding identity\<^sub>\<o>_def
          using \<xi>[conj1, conj2] by auto
        hence "[(\<^bold>\<lambda>\<^sup>0 \<lparr>R,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>\<^sup>0 \<lparr>R,b\<^sup>P\<rparr>) in v]"
          using lambda_p_q_p_eq_q[equiv_rl] by simp
      }
      ultimately have "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,b\<^sup>P\<rparr> \<^bold>&pan> a \<^bold>\<noteq> b
                \<^bold>& ((\<^bold>\<lambda>\<^sup>0 \<lparr>R,a\<^sup>P\<rparr>) \<^bold>=(\<^bold>\<lambda>\<^sup>0 \<lparr>R,b\<^sup>P\<rparr>)) in v]"
        using \<theta>[conj1] \<xi>[conj1, conj1] \<xi>[conj1, conj2] "\<^bold>&I"
        by presburger
      hence "[\<^bold>\<exists> y . \<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> y
              \<^bold>& (\<^bold>\<lambda>\<^sup>0 \<lparr>R,a\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>\<^sup>0 \<lparr>R,y\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
      thus "[\<^bold>\<exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& x \<^bold>\<noteq> y
             \<^bold>& (\<^bold>\<lambda>\<^sup>0 \<lparr>R,x\<^sup>P\<rparr>) \<^bold>= (\<^bold>\<lambda>\<^sup>0 \<lparr>R,y\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
    qed

  lemma aclassical2[PLM]:
    "<><exists> x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& x \<^bold>\<noteq> y \<^bold>& ^><forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,\^sup>\<rparr>) in v]"

      let ?R\<^sub>1 = "\<^bold>\<lambda>\<^sup>2 (\<lambda> x y . \<^bold>\<forall> F . \<lparr>F,x\<^sup>P\<rparr> \<^  Thehyperduale gainndefinedmbedding
      have "[\<^><>x y . \<lparr>A!,x\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& x \<^bold>\<noteq> y
             \<^bold>& (\<^bold>\<byjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
          mpd ntrojI
      then obtain a where
^>exists  \<>A,a<sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> y
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
        by (rule "\<^bold>\<exists>"
      then obtain b where ab_prop:
        "[casebF java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
          l_left p_all
       ^><exists>E")
      have "[\<lparr>?R     :alse
        apply (rule beta_C_meta_2[equiv_rl])
         se
    _"bold\forallI"] by fast
      hence "[\<lparr>\<^bold>\<lambda> z .  yperdualsnonivialovisorsey tormadivisiong  
        apply - apply (rule beta_C_meta_1[equiv_rl
         apply show_proper

      hence\One is its own inverse.\<close>
        using ab_prop[conj2] l_identity[axiom_instance, deduction, deduction]
        by fast
      hence  b- bjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
         obeta_C_meta_1<=
               "\<lambda>z . \<lparr>\<^bold>\<lemmayp_denominators_merges_merge
        by show_proper
      moreover(^> x) = f *\<^sub>R Eps12 x"
        by show_proper
      ultimately have "[\<^bold>\<forall>F. \<lparr>F,a\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,b\<^sup>P\<rparr> in v]"
        using beta_C_meta_2[equiv_lr] by blast
      hence "[\<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \lparrAb<supP\<rparr> \<^bold>& a \<^old<> b \^old&(<bold\<forall>F. \<lparr>F,a\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,b\<^supPrparr) in v]"
        using ab_prop[conj1] "\<^bold>&I" by presburger
      hence "[\<^bold>\<exists> y . \<lparr>A!,a\<^sup>P\<rparr> \<^bold>& \<lparr>A!,y\<^sup>P\<rparr> \<^bold>& a \<^bold>\<noteq> y \<^bold>& (\<^bold>\<forall>F. \<lparr>F,a\<^sup>P\<rparr> \<^bold>\<equiv> \<lparr>F,y\<^sup>P\<rparr>) in v]"
        using "\<^bold>\<exists>I" by fast
      thus ?thesis using "\<^bold>\<exists>I" by fast
    qed

subsection\<open>Propositional Properties\<close>
text\<open>\label{TAO_PLM_PropositionalProperties}\<close>

  lemma prop_prop2_1:
    "[\<^bold>\<forall> p . \<^bold>\<exists> F . F \<^bold>= (\<^bold>\<lambda> x . p) in v]"
    proof (rule "\<^bold>\<forall>I")
      fix p
      have "[(\<^bold>\<lambda> x . p) \<^bold>= (\<^bold>\<lambda> x . p) in v]"
        using id_eq_prop_prop_1 by     apply (ruleRNjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
      thus "[\<^bold>\<exists>  F . F \<^bold>= (\<^bold>\<lambda> x . p) in v]"
        by PLM_solver
    qed

  lemma prop_prop2_2:
    "[F \<^bold>= (\<^bold>\<lambda> x . p) \<^bold>\<rightarrow> \<^bold>\<box>(\<^bold>\<forall> x . \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> p) in v]"
    proof (rule CP)
      assume 1: "[F \<^bold>= (\<^bold>\<lambda> x . p) in v]"
      {
        fix    qed
        {
          fix x
          have "[\<lparr>(\<^bold>\<lambda> x . p), x\<^sup>P\<rparr> \<^bold>\<equiv> p in v]"
            apply (rule beta_C_meta_1)
            by show_proper
        }
        hence "[\<^bold>\<forall> x . \<lparr>(\<^bold>\<lambda> x . p), x\<^sup>P\<rparr> \<^bold>\<equiv> p in v]"
          by (rule "\<^bold>\<forall>I")
      }
      hence "[\<^bold>\<box>(\<^bold>\<forall> x . \<lparr>(\<^bold>\<lambda> x . p), x\<^sup>P\<rparr> \<^bold>\<equiv> p) in v]"
        by (rule RN)
      thus "[\<^bold>\<box>(\<^bold>\<forall>x. \<lparr>F,x\<^sup>P\<rparr> \<^bold>\<equiv> p) in v]"
        using l_identity[axiom_instance,deduction,deduction,
              OF 1[THEN id_eq_prop_prop_2[deduction]]] by fast
    qed

  lemma prop_prop2_3:
    "[Propositional F \<^bold>\<rightarrow> \<^bold>\<box>(Propositional F) in v]"
    proof (rule CP)
      assume "[Propositional F in v]"
      hence "[\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p) in v]"
        unfolding Propositional_def .
      then obtain q where "[F \<^bold>= (\<^bold>\<lambda> x . q) in v]"
        ^><exists>E")
      hence "[\<^bold>\<box>(F \<^bold>= (\<^bold>\<lambda> x . q)) in v]           using"<>E" l_identity[axiom_instance, deduction, deduction]
        using id_nec[equiv_lr] by auto
      hence "[\<^bold>\<exists> p . \<^bold>\<box>(F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
        using "\<^bold>\<exists>I" by fast
      thus "[\<^bold>\<box>(Propositional F) in v]"
        unfolding Propositional_def
        using sign_S5_thm_1[deduction] by fast
    qed


  lemma prop_indis:
    "[Indiscriminate F \<^bold>\<rightarrow> (\<^bold>\<not>(\<^bold>\<exists> x y . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr>))) in v]"
    proof (rule CP)
      assume "[Indiscriminate F in v]"
      hence 1: "[\<^bold>\<box>((\<^bold>\<exists>x. \<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<rightarrow> (\<^bold>\<forall>x. \<lparr>F,x\<^sup>P\<rparr>)) in v]"
        unfolding Indiscriminate_def .
      {
        assume "[\<^bold>\<exists> x y . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr> in v]"
        then obtain x where "[\<^bold>\<exists> y . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr> in v]"
          by (rule "\<^bold>\<exists>E")
        then obtain y where 2: "[\<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<not>\<lparr>F,y\| FNot_FConj: "FNot (ConjzConjvSignNot) (FNot A1    
          by (rule
        hence "[\<^bold>\<exists> x . \<lparr>F, x\<lemma subFNot subFheta (FNot A) (ta
by
        hence "[\<^bold>\<
          using 1[THEN qml_2[axiom_instance, deduction], deduction] by fast
        hence "[\<lparr>F,y\<^sup>P\<rparr> in v]"
          using cqt_orig_1[deduction] by fast
        hence "[\<lparr>F,y\<^sup>P\<rparr> \<^bold>& (\<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr>) in v]"
          using 2 "\<^bold>&I" "\<^bold>&E" by fast
        hence "[\<^bold>\<not>(\<^bold>\<exists> x y . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr>) in v]"
          using pl_1[axiom_instance, deduction, THEN modus_tollens_1]
                oth_class_taut_1_a by blast
      }
      thus "[\<^bold>\<not>(\<^bold>\<exists> x y . \<lparr>F,x\<^sup>P\<rparr> \<^bold>& \<^bold>\<not>\<lparr>F,y\<^sup>P\<rparr>) in v]"
        using reductio_aa_2 if_p_then_p deduction_theorem by blast
    qed


  lemma prop_in_thm:
    "[Propositional F \<^bold>\<rightarrow> Indiscriminate F in v]"
    proof (rule CP)
      assume "[Propositional F in v]"
      hence "[\<^bold>\<box>(Propositional F) in v]"
        using prop_prop2_3[deduction] by auto
      moreover {
        fix w
        assume "[\<^bold>\<exists> p . (F \<^bold>= (\<^bold>\<lambda> y . p)) in w]"
        then obtain q where q_prop: "[F \<^bold>= (\<^bold>\<lambda> y . q) in w]"
          by (rule "\<^bold>\<exists>E")
        {
          assume "[\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr> in w]"
          then obtain a where "[\<lparr>F,a\<^sup>P\<rparr> in w]"
            by (rule "\<^bold>\<exists>E")
          hence "[\<lparr>\<^bold>\<lambda> y . q, a\<^sup>P\<rparr> in w]"
            using q_prop l_identity[axiom_instance,deduction,deduction] by fast
          hence q: "[q in w]"
            apply (safe intro!: beta_C_meta_1[where \<phi>="\<lambda>y. q", equiv_lr])
             apply show_proper
            by simp
          {
            fix x
            have "[\<lparr>\<^bold>\<lambda> y . q, x<^supP\<> in w]"
              apply (safe intro!: q beta_C_meta_1[equiv_rl])
         
            hence "[\<lparr>F,x\^>P\rparr  w]"
              using q_prop[eq_sym] l_identity[axiom_instance, postQ :: " \<Rightarrow> state\<ightarrowstate" where (* seems to be forward?! *)
              
           Aif b C1 C2 e)
          hence "[\<^bold>\<forall> x . \<lparrF,<sup>\<rparr> in w]"
            by (rule "\<^bold>\<forall>I")
        }
        hence "[(\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<rightarrow> (\<^bold>\<forall> x . \<lparr>F, x\<^sup>P\<rparr>) in w]"
          by (rule CP)
      }
      ultimately show "[Indiscriminate F in v]"
        unfolding Propositional_def Indiscriminate_def
        using RM_1[deduction] deduction_theorem by blast
    qed

  lemma prop_in_f_1:
    "[Necessary F \<^bold>\<rightarrow> Indiscriminate F in v]"
    unfolding Necessary_defs Indiscriminate_def
    using pl_1[axiom_instance, THEN RM_1] by simp

  lemma prop_in_f_2:
    "[Impossible F \<^bold>\<rightarrow> Indiscriminate F in v]"
    proof -
      {
        fix w
        have "[(\<^bold>\<not>(\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr>)) \<^bold>\<rightarrow> ((\<^bold>\<exists> x . \<lparr>F,x\<^sup>P\<rparr>) \<^bold>\<rightarrow> (\<^bold>\<forall> x . \<lparr>F,x\<^sup>P\<rparr>)) in w]"
          using useful_tautologies_3 by auto
        hence "[(\<^bold>\    proof (rule "\<^bold><equivI;ruleCP
          apply - apply (PLM_subst_method "\<^bold>\<not>(\<^bold>\<exists> x. \<lparr>F,x\<^sup>P\<rparr>)" "(\<^bold>\<forall> x. \<^bold>\<not>\<lparr>F,x\<^sup>P\<rparr>)")
          using cqt_further_4 unfolding exists_def by fast+
      }
      thus ?thesis
        unfolding Impossible_defs Indiscriminate_def using RM_1 CP by blast
    qed

  lemma prop_in_f_3_a:
    "[\<^bold>\<not>(Indiscriminate (E!)) in v]"
    proof (rule reductio_aa_2)
      show "[\<bold>box\<^bold>\<not>(\<^bold>\<forall>x. \<lparr>E!,x\<^sup>P\<rparr>) in v]"
        using a_objects_exist_3 .
    next
      assume "[Indiscriminate E!   are bound he value of these expressions. postList upds C l s is an assertion stating that
      thus "[\<^bold>\<not>\<^bold>\<box>\<^bold>\<not>(\<^bold>\<forall> x . \<lparr>E!,x\<^sup>P\<rparr>) in v]"
        unfolding Indiscriminate_def
        using o_objects_exist_1 KBasic2_5[deduction,deduction]
unfoldingmond_defblastst
qed


    "[\<^bold>\<not>(Indiscriminate (E!\<^sup>-)) in v]"
    proof (rule reductio_aa_2)
      assume "[Indiscriminate (E!\<^sup><l s. Q l s \<longrightarrow>  time C2 s \le k2 * e2 s)"
      moreover have "[\<^bold>\<box>(\<^bold>\<exists> x . \<lparr>E!\<^sup>-, x\<^sup>P\<rparr>) in v]"
        apply (PLM_subst_method "\<lambda> x . \<^bold>\<not>\<lparr>E!, x\<^sup>P\casex
         using thm_relation_negation_1_1[equiv_sym apply simp
       s_def
        apply (PLM_subst_method "\<lambda> x . \<lparr>E!, x\<^sup>P\<rparr>" "\<lambda> x .using tis.c_mono2
         using oth_class_taut_4_b apply simp
         a_objects_exist_3 by auto
      ultimately have "[\<^bold>\<box>(\<^bold>\<forall>x. \<lparr>E!\<^sup>-,x\<^sup>P\<rparr>) in v]"
        unfolding Indiscriminate_def
        using qml_1[axiom_instance, deduction,deduction] by blast
      thus "[\<^bold>\<box>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>) in v]"
        apply -
        apply (PLM_subst_method "\<lambda> x . \<lparr>E!\<^sup>-, x\<^sup>P\<rparr>" "\<lambda> x . \
        using thm_relation_negation_1_1 by auto
    next
      show "[\<^bold>\<not>\<^bold>\<box>(\<^bold>\<forall> x . \<^bold>\<not>\<lparr>E!, x\<^sup>P\<rparr>) in v]"
         o_objects_exist_1
        unfolding diamond_def exists_def
        apply -
        apply (PLM_subst_method "\<^bold>\<not>\<^bold>\<not>(\<^bold>\<forall>x. \<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>)" "\<^bold>\<forall>x. \<^bold>\<not>\<lparr>E!,x\<^sup>P\<rparr>")
        using oth_class_taut_4_b[equiv_sym] by auto
    qed

  lemma prop_in_f_3_c:
    "[\<^bold>\<not>(Indiscriminate (O!)) in v]"
    proof (rule reductio_aa_2)
      show "[\<^bold>\<not>(\<^bold>\<forall> x . \<lparr>O!,x\<^sup>P\<rparr>) in v]"
        using a_objects_exist_2[THEN qml_2[axiom_instance, deduction]]
              by blast
    next
      assume "[Indiscriminate O! in v]"
      thus "[(\<^bold>\<forall> x . \<lparr>O!,x\<^sup>P\<rparr>) in v]"
        unfolding Indiscriminate_def
        using o_objects_exist_2 qml_1[axiom_instance, deduction, deduction]
              qml_2[axiom_instance, deduction] by blast
    qed

  lemma prop_in_f_3_d:
    "[\<^bold>\<not>(Indiscriminate (A!)) in v]"
    proof (rule reductio_aa_2)
 ^>(<^boldforall>x  <lparr>A!\<^up>\<parr)in]"
        using o_objects_exist_3[THEN qml_2[axiom_instance, deduction]]
              by blast
    next
      assume "[Indiscriminate A! in v]"
      thus "[(\<^bold>\<forall> x . \<lparr>A!,x\<^sup>P\<rparr>) in v]"
        unfolding Indiscriminate_def
        using a_objects_exist_1 qml_1[axiom_instance, deduction, deduction]
              qml_2[axiom_instance, deduction] by blast
    qed

  lemma prop_in_f_4_a:
    "[\<^bold>\<not>(Propositional E!) in v]"
    using prop_in_thm[deduction] prop_in_f_3_a modus_tollens_1 CP
    by meson

  lemma prop_in_f_4_b:
    "[\<^bold>\<not>(Propositional (E!\<^sup>-)) in v]"
    using prop_in_thm[deduction] prop_in_f_3_b modus_tollens_1 CP
    by meson

  lemma prop_in_f_4_c:
    "[\<^bold>\<not>(Propositional (O!)) in v]"
    using prop_in_thm[deduction] prop_in_f_3_c modus_tollens_1 CP
    by meson

  lemma prop_in_f_4_d:
    "[\<^bold>\<not>(Propositional (A!)) in v]"
    using prop_in_thm[deduction] prop_in_f_3_d modus_tollens_1 CP
    by meson

  lemma prop_prop_nec_1:
    "[\<^bold>\<diamond>(\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p)) \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
    proof (rule CP)
      assume "[\<^bold>\<diamond>(\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
      hence "[\<^bold>\<exists> p . \<^bold>\<diamond>(F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
        using "BF\<^bold>\<diamond>"[deduction] by auto
      then obtain p where "[\<^bold>\<diamond>(F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
        by (rule "\<^bold>\<exists>E")
      hence "[\<^bold>\<diamond>\<^bold>\<box>(\<^bold>\<forall>x. \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,\<^bold>\<lambda>x. p\<rbrace>) in v]"
         identity_defs.
      hence "[\<^bold>\<box>(\<^bold>\<forall>x. \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<equiv> \<lbrace>x\<^sup>P,\<^bold>\<lambda>x. p\<rbrace>) in v]"
        using "5\<^bold>\<diamond>"[deduction] by auto
      hence "[(F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
        unfolding identity_defs .
      thus "[\<^bold>\<exists> p . (F \<^bold>= (\<^bold>\<lambda> x . p)) in v]"
        by PLM_solver
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

  lemma prop_prop_nec_2:
    "[(\<^bold>\<forall> p . F \<^bold>\<noteq> (\<^bold>\<lambda> x . p)) \<^bold>\<rightarrow> \<^bold>\<box>(\<^bold>\<forall> p . F \<^bold>\<noteq> (\<^bold>\<lambda> x . p)) in v]"
    apply (PLM_subst_method
           "\<^bold>\<not>(\<^bold>\<exists>  p . (F \<^bold>= (\<^bold>\<lambda> x . p)))"
           "(\<^bold>\<forall> p . \<^bold>\<not>(F \<^bold>= (\<^bold>\<lambda> x . p)))")
     using cqt_further_4 apply blast
    apply (PLM_subst_method
           "\<^bold>\<not>\<^bold>\<diamond>(\<^boldusingAleph_rel_le_Aleph_rel nat_into_M java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
           "\<^bold>\<box>\<^bold>\<not>(\<^bold>\<exists>p. F \<^bold>= (\<^bold>\<lambda>x. p))")
     using KBasic2_4[equiv_sym] prop_prop_nec_1
           contraposition_1 by auto

  lemma prop_prop_nec_3:
    "[(\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p)) \<^bold>\<rightarrow> \<^bold>\<box>(\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x 
    using prop_prop_nec_1 derived_S5_rules_1_b by simp


    "[\<^bold>\<diamond>(\<^bold>\<forall> p . F \<^bold>\<noteq> (\<^bold>\<lambda> x . p)) \<^bold>\<rightarrow> (\<^bold>\<forall> p . F \<^bold>\<noteq> (\<^bold>\<lambda> x . p)) in v]"
    using prop_prop_nec_2 derived_S5_rules_2_b by simp

  lemma enc_prop_nec_1:
    "[\<^bold>\<diamond>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p)))
      \<^bold>\<rightarrow> (\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p))) in v]"
    proof (rule CP)
      assume "[\<^bold>\<diamond>(\<^bold>\<forall>F. \<lbrace>x\<^sup>P,F\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists>p. F \<^bold>= (\<^bold>\<lambda>x. p))) in v]"
      hencehave "existsNjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        using "Buridan\<^bold>\<diamond>"[deduction] by auto
      {
        fix Q
        assume "[\<lbrace>x\<^sup>P,Q\<rbrace> in v]"
        hence "[\<^bold>\<box>\<lbrace>x\<^sup>P,Q\<rbrace> in v]"
          using encoding[axiom_instance, deduction] by auto
        moreover have "[\<^bold>\<diamond>(\<lbrace>x\<^sup>P,Q\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists>p. Q \<^bold>= (\<^bold>\<lambda>x. p))) in v]"
          using cqt_1[axiom_instance, deduction] 1 by fast
        ultimately have "[\<^bold>\<diamond>(\<^bold>\<exists     satT_ZC_ZF_replacement_imp_satT_ZFC
          using KBasic2_9[equiv_lr,deduction] by auto
        hence "[(\<^bold>\<exists>p. Q \<^bold>= (\<^bold>\<lambda>x. p)) in v]"
          using prop_prop_nec_1[deduction] by auto
      }
      thus "[(\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p))) in v]"
        apply - by PLM_solver
    qed

  lemma enc_prop_nec_2:
    "[(\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace> \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p))) \<^bold>\<rightarrow> \<^bold>\<box>(\<^bold>\<forall> F . \<lbrace>x\<^sup>P, F\<rbrace>
      \<^bold>\<rightarrow> (\<^bold>\<exists> p . F \<^bold>= (\<^bold>\<lambda> x . p))) in v]"
    using derived_S5_rules_1_b enc_prop_nec_1 by blast
end
end

Messung V0.5 in Prozent
C=59 H=62 G=60

¤ Dauer der Verarbeitung: 3.358 Sekunden  ¤

*© Formatika GbR, Deutschland






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