CoCoA » CoCoA-5

09 Oct 2017

15:23 Support #977: "universal denominator" (related with GroebnerFanIdeals)

John Abbott wrote:
> JAA prefers INT to RINGELEM (at least for the moment).
OK, I'll change it back.
> If the co... Anna Maria Bigatti

15:19 Support #977: "universal denominator" (related with GroebnerFanIdeals)

JAA prefers INT to RINGELEM (at least for the moment).
If the coeff ring is not QQ but is FracField then I'm not s... John Abbott

12:53 Support #977: "universal denominator" (related with GroebnerFanIdeals)

Should @UniversalDenominator@ return @INT@ or @RingElem@?
We should also choose its name: @UniversalDen@?
Current... Anna Maria Bigatti

05 Oct 2017

10:21 Slug #907: ApproxSolve very slow on this example

This is another example where @ApproxSolve@ is too slow (in CoCoA-5.2.2).
The example came from "playing with" palin... John Abbott

02 Oct 2017

13:30 Feature #731 (In Progress): Primary Decomposition in CoCoA-5

PD for 0-dim ideals has been implemented (see issue #845)
John Abbott

27 Sep 2017

17:22 Slug #948: radical is slow (compared to singular) on these examples

Singular appears not to compute a GBasis for the radical.
For instance, in the first example in comment 11, Singul... John Abbott

22 Sep 2017

18:00 Design #476 (In Progress): Review utility of package IO

Indeed some form of "folded" printing could be useful for large outputs (especially inside emacs which has problems w... John Abbott

14:42 Bug #1104 (In Progress): Eigenvectors: inconsistent return type

From the manual for *@eigenvectors@*:... John Abbott

14:30 Slug #948: radical is slow (compared to singular) on these examples

I have noticed that when I interrupt the very long radical computations the interpreter indicates that it was computi... John Abbott

19 Sep 2017

17:21 Slug #948: radical is slow (compared to singular) on these examples

Here is another slow example: (about 450s on my computer)... John Abbott

14:43 Slug #948: radical is slow (compared to singular) on these examples

I have just tried the last example (916s) from the comment above modulo 32003 and modulo 29641. The computation was ... John Abbott

14:27 Slug #948 (In Progress): radical is slow (compared to singular) on these examples

Here are some examples of zero-dim ideals where radical is slow:... John Abbott