Working modulo 2

*To*: mathgroup at smc.vnet.net*Subject*: [mg92082] Working modulo 2*From*: me13013 <me13013 at gmail.com>*Date*: Fri, 19 Sep 2008 05:56:26 -0400 (EDT)

Howdy, How does one reduce a polynomial's coefficients modulo 2? For example, I have a function that sums several polynomials, and currently produces a result like this: 7 + x + 4 y + 4 x y + 3 z + 2 x z + 4 y z + 4 x y z I want to reduce this to 1 + x + z I thought I might be able to do this by somehow coercing the terms into a list and then doing Sum[L[[i]],{i,1,Length[L]},Modulus->2], but no such luck. Any ideas? Thanks, Bob H

**Follow-Ups**:**Re: Working modulo 2***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>