#############################################################################
##
#W###############################
#Y Copyright (C) 2014 James D. Mitchell
##
## Licensing information can be found in the README file of this package.
##
#############################################################################
##
<#GAPDoc Label="MinimalIdealGeneratingSet">
<ManSection>
<Attr Name = "MinimalIdealGeneratingSet" Arg = "I"/>
<Returns>A minimal set ideal generators of an ideal.</Returns>
<Description>
This function returns a minimal set of elements of the parent of the
semigroup ideal <A>I</A> required to generate <A>I</A> as an ideal. <P/>
The notion of the generators of an ideal is distinct from the notion of
the generators of a semigroup or monoid. In particular, the semigroup
generated by the generators of an ideal is not, in general, equal to that
ideal. Use <Ref Attr = "GeneratorsOfSemigroup" BookName =##
W ideals.ml
costly.
<Example><![CDATAW ideals.xml
gap> S :=Monoid([
> Bipartition[[1,2,, -],[4][14,[3],
> Bipartition([[1, 4, -2, -4], [2, -1, -3], [3 James D.Mitchell
> g> java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 50
(
< 1 -1 ,[22 ,[ 3 -] 4, -]<
java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 18
><A A>bj2/>,. java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 18
<andideals <></> java.lang.StringIndexOutOfBoundsException: Range [51, 50) out of bounds for length 84
<#GAPDocFunc " =" obj2...">
<ManSection>
<Attr Name = "GeneratorsOfSemigroupIdeal" Arg = "I"/>
<Returns>The generators of an ideal of a semigroup.</Returns>
<Description>
This function returns the <eturns
ich were to defined < <A></A>whenit was created<>obj1</>, <>bj2/> ... </>
If <A>I</A> is an ideal of a semigroup, then
least 2-sidedideal ofasemigroup</> set<C>/>
elements of <Cjava.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 84
/
The notion of ><><A .. P>
thegenerators semigroupormonoid Inparticular semigroup
generated by AS<>
<Example><![CDATA[
gap> S := Semigroup(
> Bipartition([[1, 2, 3, 4, degree10
> Bipartition([123,-] [] -1,[-,-4],
> Bipartition([[1, 3, -2], [2, 4], [-1, -3, -4]]),
> java.lang.StringIndexOutOfBoundsException: Range [16, 8) out of bounds for length 66
>java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 56
gap> I := SemigroupIdeal(S, S.1 * S.2 * S.5);;
gap>GeneratorsOfSemigroupIdeal(I);
[ <<#/APDoc
gap
false]]></Example>
PDoc Label="SupersemigroupOfIdeal">
</ManSection>
<#/GAPDoc>
<#GAPDoc Label="SemigroupIdeal">
<ManSection>
<Func Name = "SemigroupIdeal" Arg = "S, obj1, obj2, .. . "/>
<Returns>
An ideal of a semigroup.
</Returns>
<Description>
If < <ManSection
<Attr Name"upersemigroupOfIdeal"Arg= I/java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
and of<>SA) <>SemigroupIdeal<C> the
-A<java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 71
><><><>..</
function semigroup
function is.java.lang.StringIndexOutOfBoundsException: Range [56, 46) out of bounds for length 77
<Example><![CDATAt semigroup used anyof thepredecessors ofthe
gap(10);
<symmetric inverse ideal<>/>,and<>/> anideal of<CI</> then
gap>I:=(S ([,2);
<inverse partial perm semigroup ideal of rank 10 with 1 generator>
gap> Size(I); 4151
gap> I := SemigroupIdeal(S, I, Idempotents(S));
<inverse partial perm semigroup ideal example,which is andunnecessary <CI/C>
<>
</restricti of the' on <S/>.
<#/<P/
<#java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0
<
<Attr Name = "SupersemigroupOfIdeal" Arg = >/> of <>IC> then <>SupersemigroupOfIdeal)/ java.lang.StringIndexOutOfBoundsException: Range [79, 80) out of bounds for length 79
<>
java.lang.StringIndexOutOfBoundsException: Range [0, 8) out of bounds for length 0
<Returns
transformation ofdegree8>
TheRef Func=""""/of ideal java.lang.StringIndexOutOfBoundsException: Range [79, 78) out of bounds for length 81
java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 67
S">java.lang.StringIndexOutOfBoundsException: Range [68, 66) out of bounds for length 76
function thecontaining generators ofthe semigroup
(i.e. <Ref Attr = "subsemigroup of 1050x56 Rees 0-matrix semigroup with 10 generators>
used computetheidealjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
<P/>
For a > J := SemigroupIdeal,Representative(inimalDClassS))
most semigroup usedto create any of predecessors of the
current ideal. For example, if <C>S</C> is a semigroup, <C>I</C> is a
regular ideal of <C>S</C>, and <C>J</C> is an ideal of <C>I</java.lang.StringIndexOutOfBoundsException: Range [0, 68) out of bounds for length 19
<C>(J)C is<>I</C>and<SupersemigroupOfIdeal)/>
<C>S</false]<Example
inthis example,which andunnecessary <C><C>is
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
java.lang.StringIndexOutOfBoundsException: Range [21, 18) out of bounds for length 57
/
empty-java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 62
<><C ideal C><C, <>SupersemigroupOfIdeal)/>java.lang.StringIndexOutOfBoundsException: Range [79, 80) out of bounds for length 79
<C>I</C(ee< ="")
to java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
<Example><![CDATA[
gap> S := FullTransformationSemigroup(8);
<full transformation monoid Transformation(,32,2))java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
gap> x := Ideals();
gap> D: DClass(, x;
<Green' 1generator>,
gap> R := PrincipalFactor(D);
<Rees 0-matrix semigroup 1050x56 over Group([ (2, <non-regulartransformation semigroup ideal of degree 4 with
gap>S:=Semigroup(ist[ .10],x > RandomR);
<subsemigroup generators,
gap> I := SemigroupIdeal(S, MultiplicativeZero(S));
<regular Rees 0-matrix semigroup idealregular transformationsemigroup ideal of 4 with1 generator,
gap> SupersemigroupOfIdeal(I);
<non-regular transformation semigroup ideal of degree 4 with
gap> J := SemigroupIdeal(java.lang.StringIndexOutOfBoundsException: Range [0, 26) out of bounds for length 15
<regular Rees 0-matrix semigroup ideal with 1 generator>
gap> Parent(J) = I;
true
gap]
false]]]><Example>>
</Description/Description>
</ManSection>
<#/GAPDoc>
<#GAPDoc Label="Ideals">
<ManSection>
<</ManSection
Returns
An list of ideals.
</Returns>
<Description>
If <A>S</A> is a finite non-empty semigroup, then this attribute returns a
list of the non-empty two-sided ideals of <A>S</A>. <P/>
The ideals are returned in no particular order, and each ideal uses the
minimum possible number of generators
(see <Ref Attr = "GeneratorsOfSemigroupIdeal"/>).
<Example><![CDATA[
gap> S := Semigroup([Transformation([4, 3, 4, 1]),
> Transformation([4, 3, 2, 2])]);
<transformation semigroup of degree 4 with 2 generators>
gap> Ideals(S);
[ <non-regular transformation semigroup ideal of degree 4 with 1 generator>,
<non-regular transformation semigroup ideal of degree 4 with 1 generator>,
<non-regular transformation semigroup ideal of degree 4 with 2 generators>,
<regular transformation semigroup ideal of degree 4 with 1 generator>,
<non-regular transformation semigroup ideal of degree 4 with 1 generator>,
<regular transformation semigroup ideal of degree 4 with 1 generator>
]
]]></Example>
</Description>
</ManSection>
<#/GAPDoc>
Messung V0.5 in Prozent
¤ Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.0.5Bemerkung:
¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.