char Ring -- the characteristic of a field or ring

char Ring -- the characteristic of a field or ring

Synopsis:

Function: char -- the characteristic of a field or ring

Input:

an instance of class Ring.

Output:

an instance of class ZZ.

Code:

     -- ../../../Macaulay2/m2/rings.m2:17-19
     char Ring := R -> (
          if R.?char then R.char 
          else error("characteristic of ", toString R, " unknown"))