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Macaulay2Doc :: HH

HH -- general homology and cohomology functor


HH is a ScriptedFunctor which serves as an interface to the methods for homology and cohomology, in the sense that, HH_i(M) is an abbreviation for homology(i,M) HH^i(M) is an abbreviation for cohomology(i,M), and HH(M) is an abbreviation for homology(,M). A second argument and optional arguments may be added.

Ways to use HH :

For the programmer

The object HH is a scripted functor.