map(ChainComplex,ChainComplex,Function) -- make a map of chain complexes

map(ChainComplex,ChainComplex,Function) -- make a map of chain complexes

Synopsis:

Function: map -- make a map

Input:

an instance of class ChainComplex.

an instance of class Function.

Output:

an instance of class ChainComplexMap.

Optional arguments :

map(..., Degree)

Next more general method: map(GradedModule,GradedModule,Function) -- make a map

map(C,D,f) -- construct a map from the chain complex D to the chain complex C which in degree k is the map provided as the value of f(k).

As a convenience, the value returned by f(k) is used as the third argument in map(C_k,D_k,f(k)).

The function f is called only for those indices which represent spots occupied in both the source and target chain complexes.

See also:

ChainComplex -- the class of all chain complexes