matrix Matrix -- make a matrix

matrix Matrix -- make a matrix

Synopsis:

Function: matrix -- make a matrix

Input:

an instance of class Matrix.

Output:

an instance of class Matrix.

Optional arguments :

matrix(..., Degree)

matrix(..., DegreeMap)

matrix f -- produce the matrix of a map f.

If the source and target of f are free, then the result is f itself. Otherwise, the source and target will be replaced by the free modules whose basis elements correspond to the generators of the modules.

See also:

map -- make a map

matrix -- make a matrix

Code:

     -- ../../../Macaulay2/m2/matrix1.m2:290-295
     matrix(Matrix) := Matrix => options -> (m) -> (
          if isFreeModule target m and isFreeModule source m
          and ring source m === ring target m
          then m
          else map(cover target m, cover source m ** ring target m, m, Degree => degree m)
          )