       Re: Working modulo 2

• To: mathgroup at smc.vnet.net
• Subject: [mg92110] Re: [mg92082] Working modulo 2
• From: Bob Hanlon <hanlonr at cox.net>
• Date: Sat, 20 Sep 2008 04:59:34 -0400 (EDT)
• Reply-to: hanlonr at cox.net

```poly = 7 + x + 4 y + 4 x y + 3 z + 2 x z + 4 y z + 4 x y z;

PolynomialMod[poly, 2]

x+z+1

Bob Hanlon

---- me13013 <me13013 at gmail.com> wrote:

=============
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

--

Bob Hanlon

```

• Prev by Date: Re: Working modulo 2
• Next by Date: Re: Working modulo 2
• Previous by thread: Re: Working modulo 2
• Next by thread: Re: Working modulo 2