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(* Title: Tools/Argo/argo_common.ML
Author: Sascha Boehme
Common infrastructure for the decision procedures of Argo.
*)
signature ARGO_COMMON =
sig
type literal = Argo_Lit.literal * Argo_Proof.proof option
datatype 'a implied = Implied of 'a list | Conflict of Argo_Cls.clause
end
structure Argo_Common: ARGO_COMMON =
struct
type literal = Argo_Lit.literal * Argo_Proof.proof option
(* Implied new knowledge accompanied with an optional proof. If there is no proof,
the literal is to be treated hypothetically. If there is a proof, the literal is
to be treated as uni clause. *)
datatype 'a implied = Implied of 'a list | Conflict of Argo_Cls.clause
(* A result of a step of a decision procedure, either an implication of new knowledge
or clause whose literals are known to be false. *)
end
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