CoCoA » CoCoA-5

09 Nov 2016

18:07 Feature #954: New function: StdBasis (standard basis)

Fixed a bug (with Robbiano) Anna Maria Bigatti

17:37 Feature #965 (Closed): New function: multigraded BettiNumbers

Add functions to print resolutions with multigradings and their Betti numbers
(BettiMatrix and BettiDiagram cannot b... Anna Maria Bigatti

13:51 Slug #948: radical is slow (compared to singular) on these examples

I have found the (a?) slow step: there is a call to @saturate(I, ideal(RingElem(RingOf(G),G1)))@ taking a long time. Anna Maria Bigatti

08 Nov 2016

16:17 Bug #963 (Feedback): Manual: XML problem with html doc

I cheated: instead of trying to understand XSL I just changed the few "<" into "&amp;lt;".
Works smooothly now.
(... Anna Maria Bigatti

15:04 Feature #964 (New): New function: MakeMultiset?

Sometimes a function seeing a list as multiset (and counting the repeated elements) could be useful.
In practice som... Anna Maria Bigatti

14:40 Slug #948: radical is slow (compared to singular) on these examples

Here is another example: CoCoA-5 took about 760s, while Singular took about 0.6s (more than 1000 times faster).
<pr... John Abbott

07 Nov 2016

16:23 Bug #963 (Closed): Manual: XML problem with html doc

There is a problem for the manual of @StagedTrees@ because there is a "<".
I thought that was sorted out a long time... Anna Maria Bigatti

15:55 Support #851: Release: CoCoA-5.2.0

First pre-release for linux (64-bit) Anna Maria Bigatti

05 Nov 2016

17:44 Bug #755: Find out how to compile statically on linux

A recent email from Michael Wheat reports that installing *@libopenblas@* is not sufficient (at least not for him).
... John Abbott

02 Nov 2016

17:33 Feature #960: New function: IdealAndSeparatorsOfPoints

Which target version were you thinking of? John Abbott

17:19 Feature #960: New function: IdealAndSeparatorsOfPoints

What target version do you want for this? 8-O
John Abbott

09:01 Feature #960 (New): New function: IdealAndSeparatorsOfPoints

Check why it isn't yet available: problems for output type in CoCoALib? Anna Maria Bigatti

27 Oct 2016

17:15 Feature #959 (Feedback): New function: SymmetricPolys

Anna Maria Bigatti

17:12 Feature #959 (Closed): New function: SymmetricPolys

[request by L.Robbiano]
SymmPoly = lista dei SymmPoly[D]
SymmPoly[D] = somma dei monomi squarefree di grado D
... Anna Maria Bigatti

08:55 Feature #954 (Feedback): New function: StdBasis (standard basis)

Anna Maria Bigatti

08:54 Feature #954 (Closed): New function: StdBasis (standard basis)

This is essentially the same as TgCone, but without selecting the Initial forms and returning a LIST (a bit like Gbas... Anna Maria Bigatti

19 Oct 2016

10:16 Slug #948: radical is slow (compared to singular) on these examples

The first example (with 24 indets) was consuming over 7Gbytes of RAM after 15 hours of CPU, so I killed the process (... John Abbott

18 Oct 2016

15:16 Slug #948: radical is slow (compared to singular) on these examples

I've just added a first check if the ideal is zero-dimensional.
Thanks to our new MinPoly that is much faster.
This... Anna Maria Bigatti

15:01 Slug #948: radical is slow (compared to singular) on these examples

Here is Mario's second example: I have chosen @ZZ/(101)@ for the coeffs, but the original was over @QQ@... John Abbott

15:00 Slug #948: radical is slow (compared to singular) on these examples

Here is Mario's first example: I have used coeffs in @ZZ/(101)@ but the original was over @QQ@... John Abbott

14:59 Slug #948 (Closed): radical is slow (compared to singular) on these examples

Mario gave me two examples where Singular computes the radical *much* faster than CoCoA does.
I'll put the examples ... John Abbott