Re: Polynomdivision with coefficients in Z_n
[email protected] Mon, 24 Nov 2014 23:59:02 +0100
| Newsgroups | gmane.comp.mathematics.axiom.general |
|---|---|
| Message-ID | <20141124235902.Horde.PJByBHbwDsBnDFkQpFbycQ4@webmail.in-berlin.de> |
Quoting Ralf Hemmecke <[email protected]>: >> But if the coefficients are modulo n, how to specify this? > > Does that help? > > http://axiom-wiki.newsynthesis.org/SandBoxPolynomialOverFiniteField [...] It looks, like if it is going into the right directions FiniteField looks good, maybe FiniteRing also available? What I'm looking for, is polynoms with modulo-coefficients. Say Z_2 = { 0, 1 } And the coefficients a_i of a polynom e.g. a2 * t^2 + a1 * t + a0 can only have values of 0 an 1, which are the representations of aequivalence classes. So, -1 = 1, -2 = 0, 2 = 0, 3 = 1, 4 = 0, and so on Aequivalence classes in Z2 (LaTeX: \mathbb{Z}_2) ... -4 -3 -2 -1 0 1 2 3 4 5 6 7 .... And 0 and 1 are the usual representations of these classes. And the coefficients can have only values from these classes. So, it bahaves as if they can have only values 0 and 1. In Z_3, it would be 0,1,2 in Z_4, it would be 0,1,2,3 ... any ideas about that?