map(Module,ZZ,{...}) -- make a map

map(Module,ZZ,{...}) -- make a map

Synopsis:

Function: map -- make a map

Input:

an instance of class Module.

an instance of class ZZ.

an instance of class List.

Output:

an instance of class Matrix.

Optional arguments :

map(..., Degree)

map(M,n,v) -- construct a map from a free graded module of rank n to M whose entries are in the doubly nested list v.

The degrees of the basis elements of the source module are chosen in an attempt to ensure that the resulting map is homogeneous of degree zero.