degree Module -- the degree

degree Module -- the degree

Synopsis:

Function: degree -- the degree

Input:

an instance of class Module.

Code:

     -- ../../../Macaulay2/m2/modules2.m2:397-404
     degree Module := M -> (
       hf := poincare M;
       T := (ring hf)_0;
       if hf == 0 then 0
       else (
            while substitute(hf,{T=>1}) == 0 do hf = hf // (1-T);
            -- while hf % (1 - T) == 0 do hf = hf // (1-T);
            substitute(hf,{T=>1})))