<Chapter Label = "Green's relations" >
<Heading>
Green's relations
</Heading>
In this chapter we describe the functions in &SEMIGROUPS; for
computing Green's classes and related properties of semigroups.
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<Section>
<Heading>
Creating Green's classes and representatives
</Heading>
In this section, we describe the methods in the &SEMIGROUPS; package for
creating Green's classes.
<P/>
<#Include Label = "XClassOfYClass" >
<#Include Label = "GreensXClassOfElement" >
<#Include Label = "GreensXClassOfElementNC" >
<#Include Label = "GreensXClasses" >
<#Include Label = "XClassReps" >
<#Include Label = "MinimalDClass" >
<#Include Label = "MaximalXClasses" >
<#Include Label = "NrRegularDClasses" >
<#Include Label = "NrXClasses" >
<#Include Label = "PartialOrderOfXClasses" >
<#Include Label = "LengthOfLongestDClassChain" >
<#Include Label = "IsGreensDGreaterThanFunc" >
</Section>
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<Section>
<Heading>
Iterators and enumerators of classes and representatives
</Heading>
In this section, we describe the methods in the &SEMIGROUPS; package for
incrementally determining Green's classes or their representatives.
<P/>
<#Include Label = "IteratorOfXClassReps" >
<#Include Label = "IteratorOfXClasses" >
</Section>
<!--**********************************************************************-->
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<Section>
<Heading>
Properties of Green's classes
</Heading>
In this section, we describe the properties and operators of Green's
classes that are available in the &SEMIGROUPS; package.
<P/>
<#Include Label = "\<" >
<#Include Label = "IsRegularGreensClass" >
<#Include Label = "IsGreensClassNC" >
</Section>
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<Section>
<Heading>
Attributes of Green's classes
</Heading>
In this section, we describe the attributes of Green's classes that are
available in the &SEMIGROUPS; package.
<P/>
<#Include Label = "GroupHClass" >
<#Include Label = "SchutzenbergerGroup" >
<#Include Label = "StructureDescriptionSchutzenbergerGroups" >
<#Include Label = "StructureDescriptionMaximalSubgroups" >
<#Include Label = "MultiplicativeNeutralElement" >
<#Include Label = "StructureDescription" >
<#Include Label = "InjectionPrincipalFactor" >
<#Include Label = "PrincipalFactor" >
</Section>
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<Section>
<Heading>
Operations for Green's relations and classes
</Heading>
In this section, we describe some operations related to Green's classes that are
available in the &SEMIGROUPS; package.
<P/>
<#Include Label = "GreensMultiplier" >
</Section>
<!--**********************************************************************-->
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</Chapter>
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