CoCoA

16 Jul 2019

13:05 CoCoALib Feature #1297 (Feedback): New fn: FixedDivisor (formerly IntrinsicContent)

I have implemented @FixedDivisor@ which computes gcd of @f(n)@ as @n@ ranges over all integers.
Also exported to ... John Abbott

13:03 CoCoALib Feature #1297 (Closed): New fn: FixedDivisor (formerly IntrinsicContent)

Add a new function to compute the "FixedDivisor" of a polynomial over @ZZ@ (or over @QQ@ but with integer coeffs). John Abbott

19 Jun 2019

09:21 CoCoA-5 Feature #1272: Groebner Bases over ZZ

Few bugs fixed.
We separated GBoverZZ and MinimalGBoverZZ. Elisa Palezzato

18 Jun 2019

15:22 CoCoA-5 Feature #487: ScalarProduct accepts MatrixRow?

Anna Maria Bigatti wrote:
> I like defining (mathematically) matrix multiplication by scalar products, so I'm in fav... Anna Maria Bigatti

15:15 CoCoA-5 Feature #1296: Matrixrow-functions

From what you say, I think you are passing a @MATRIXROW@ as an argument (because you say you cannot call @NumCols@).
... Anna Maria Bigatti

17 Jun 2019

11:46 CoCoA-5 Feature #1296 (In Progress): Matrixrow-functions

The specific request to make @len@ or @NumCols@ work for a @MATRIXROW@ should not be too hard to achieve. Which func... John Abbott

11:43 CoCoA-5 Feature #1296: Matrixrow-functions

The "easy solution" is to use @GetRow(M,1)@ or @R:=GetRows(M); R[1]@ instead of @M[1]@. But this makes copies of the... John Abbott

05:45 CoCoA-5 Feature #1272: Groebner Bases over ZZ

We modified our package following Robbiano's examples that you can find below.
use ZZ[x,y,z];
f1 := x^2-2*y;
f2... Elisa Palezzato