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Macaulay2Doc :: Tally - Tally

Tally - Tally -- difference of tallies

Synopsis

Operator: -
Usage:

x - y
Inputs:
- x, a tally
- y, a tally
Outputs:
- a tally, the difference of the two tallies

Description

The count associated to an item i in the result is the difference of the counts in x and in y if it's positive, otherwise, zero.

i1 : tally {a,a,b,c} - tally {c,d,d}

o1 = Tally{a => 2}
           b => 1

o1 : Tally

See also

Tally -- the class of all tally results

Ways to use this method:

Tally - Tally -- difference of tallies