next | previous | forward | backward | up | top | index | toc | Macaulay2 web site
ChainComplexExtras :: ChainComplexExtras

ChainComplexExtras -- More ChainComplex Functionality.

Authors

Version

This documentation describes version 0.5 of ChainComplexExtras.

Source code

The source code from which this documentation is derived is in the file ChainComplexExtras.m2.

Exports

  • Functions and commands
    • chainComplexMap -- Defines a ChainComplexMap via a list of matrices.
    • isChainComplex -- Test to see if the ChainComplex has square zero differential.
    • isChainComplexMap -- Test to see if the ChainComplexMap commutes with the differentials.
    • isExact -- Test to see if the ChainComplex is exact.
    • isQuism -- Test to see if the ChainComplexMap is a quasiisomorphism.
    • koszulComplex -- Gives the Koszul complex on the generators of I.
    • taylor -- Gives the nth differential in the Taylor resolution of a monomial ideal I.
    • taylorResolution -- Gives the Taylor resolution of a monomial ideal I.
  • Symbols
    • InitialDegree -- Used to specify an initial degree for chainComplexMap.