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CellComplex -- the class of all cell complexes

Description

A cell complex in this context is the combinatorial data of a CW-complex, i.e. a collection of cells in various dimensions along with their boundary expressed as a sequence of cells along with an orientation such that the boundary is a cycle.

Caveat

Not every object represented by a CellComplex object corresponds to a topological cell complex. In general there is no way to check that such a topological realization exists.

See also

Functions and methods returning a cell complex:

  • cellComplex -- create a cell complex
  • cellComplex(Ring,List) -- see cellComplex -- create a cell complex
  • cellComplex(Ring,PolyhedralComplex) -- creates cell complex from given polyhedral complex
  • cellComplex(Ring,Polyhedron) -- creates cell complex from given polyhedron
  • cellComplex(Ring,SimplicialComplex) -- Creates a cell complex from a given simplicial complex
  • cellComplexRPn -- gives a $RP^n$ as a cell complex
  • cellComplexRPn(Ring,ZZ) -- see cellComplexRPn -- gives a $RP^n$ as a cell complex
  • cellComplexSphere -- gives a sphere as a cell complex
  • cellComplexSphere(Ring,ZZ) -- see cellComplexSphere -- gives a sphere as a cell complex
  • cellComplexTorus -- gives a torus as a cell complex
  • cellComplexTorus(Ring,ZZ) -- see cellComplexTorus -- gives a torus as a cell complex
  • hullComplex -- gives the hull complex of a monomial ideal
  • hullComplex(MonomialIdeal) -- see hullComplex -- gives the hull complex of a monomial ideal
  • hullComplex(QQ,MonomialIdeal) -- see hullComplex -- gives the hull complex of a monomial ideal
  • hullComplex(ZZ,MonomialIdeal) -- see hullComplex -- gives the hull complex of a monomial ideal
  • relabelCellComplex -- relabels a cell complex
  • relabelCellComplex(CellComplex,HashTable) -- see relabelCellComplex -- relabels a cell complex
  • RingMap ** CellComplex -- tensors labels via a ring map
  • scarfComplex -- gives the hull complex of a monomial ideal
  • scarfComplex(MonomialIdeal) -- see scarfComplex -- gives the hull complex of a monomial ideal
  • skeleton(ZZ,CellComplex) -- computes the $r$-skeleton of a cell complex
  • CellComplex _ List -- see subcomplex -- the subcomplex induced by a degree or monomial
  • CellComplex _ RingElement -- see subcomplex -- the subcomplex induced by a degree or monomial
  • CellComplex _ ZZ -- see subcomplex -- the subcomplex induced by a degree or monomial
  • subcomplex -- the subcomplex induced by a degree or monomial
  • subcomplex(CellComplex,List) -- see subcomplex -- the subcomplex induced by a degree or monomial
  • subcomplex(CellComplex,RingElement) -- see subcomplex -- the subcomplex induced by a degree or monomial
  • subcomplex(CellComplex,ZZ) -- see subcomplex -- the subcomplex induced by a degree or monomial
  • taylorComplex -- gives the Taylor complex of a monomial ideal
  • taylorComplex(MonomialIdeal) -- see taylorComplex -- gives the Taylor complex of a monomial ideal

Methods that use a cell complex:

For the programmer

The object CellComplex is a type, with ancestor classes HashTable < Thing.


The source of this document is in /build/reproducible-path/macaulay2-1.26.05+ds/M2/Macaulay2/packages/CellularResolutions/doc.m2:101:0.