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## simpcomp / homology.gd
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## Homology related functions
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## $Id$
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## <#GAPDoc Label="homology">
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## By default, <Package>simpcomp</Package> uses an algorithm based on discrete Morse theory (see Chapter <Ref Chap="chap:DMT" />, <Ref Meth="SCHomology" />)
## for its homology computations. However, some additional (co-)homology related functionality cannot be realised using this algorithm.
## For this, <Package>simpcomp</Package> contains an additional (co-)homology algorithm (cf. <Ref Func="SCHomologyInternal" />), which will be presented in this chapter.<P />
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## Furthermore, whenever possible <Package>simpcomp</Package> makes use of the &GAP; package ''homology'' <Cite Key="Dumas04Homology" />, for an alternative method to calculate
## homology groups (cf. <Ref Func="SCHomologyClassic" />) which sometimes is much faster than the built-in discrete Morse theory algorithm.
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## <Section>
## <Heading>Homology computation</Heading>
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## Apart from calculating boundaries of simplices, boundary matrices or the simplicial homology of a given complex, <Package>simpcomp</Package> is also able to compute a basis of the homology groups.
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## <#Include Label="SCBoundaryOperatorMatrix"/>
## <#Include Label="SCBoundarySimplex"/>
## <#Include Label="SCHomologyBasis"/>
## <#Include Label="SCHomologyBasisAsSimplices"/>
## <#Include Label="SCHomologyInternal"/>
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## </Section>
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## <Section>
## <Heading>Cohomology computation</Heading>
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## <Package>simpcomp</Package> can also compute the cohomology groups of simplicial complexes, bases of these cohomology groups, the cup product of two cocycles and the intersection form of (orientable) 4-manifolds.
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## <#Include Label="SCCoboundaryOperatorMatrix"/>
## <#Include Label="SCCohomology"/>
## <#Include Label="SCCohomologyBasis"/>
## <#Include Label="SCCohomologyBasisAsSimplices"/>
## <#Include Label="SCCupProduct"/>
## <#Include Label="SCIntersectionForm"/>
## <#Include Label="SCIntersectionFormParity"/>
## <#Include Label="SCIntersectionFormDimensionality"/>
## <#Include Label="SCIntersectionFormSignature"/>
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## </Section>
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##<#/GAPDoc>
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