Tally ? Tally -- comparison of tallies

Tally ? Tally -- comparison of tallies

Synopsis:

Operator: ? -- comparison operator

Input:

an instance of class Tally.

Next more general method: Thing ? Thing -- comparison operator

x ? y -- compares two tallies, returning symbol <, symbol >, symbol ==, or incomparable.

See also:

Tally -- the class of all tally results

Code:

     -- ../../../Macaulay2/m2/set.m2:16-21
     Tally ? Tally := (x,y) -> (
          w := values (x-y);
          if #w === 0 then symbol ==
          else if all(w,i -> i>0) then symbol >
          else if all(w,i -> i<0) then symbol <
          else incomparable)