MathGroup Archive 2008

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Working modulo 2


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?

Bob H

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