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?