Activity
From 14 Oct 2016 to 12 Nov 2016
09 Nov 2016
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18:07 Feature #954: New function: StdBasis (standard basis)
- Fixed a bug (with Robbiano)
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- Add functions to print resolutions with multigradings and their Betti numbers
(BettiMatrix and BettiDiagram cannot b... -
- I have found the (a?) slow step: there is a call to @saturate(I, ideal(RingElem(RingOf(G),G1)))@ taking a long time.
08 Nov 2016
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- I cheated: instead of trying to understand XSL I just changed the few "<" into "&lt;".
Works smooothly now.
(... -
- Sometimes a function seeing a list as multiset (and counting the repeated elements) could be useful.
In practice som... -
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...
07 Nov 2016
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- There is a problem for the manual of @StagedTrees@ because there is a "<".
I thought that was sorted out a long time... -
- First pre-release for linux (64-bit)
05 Nov 2016
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- A recent email from Michael Wheat reports that installing *@libopenblas@* is not sufficient (at least not for him).
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02 Nov 2016
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- Which target version were you thinking of?
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- What target version do you want for this? 8-O
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- Check why it isn't yet available: problems for output type in CoCoALib?
27 Oct 2016
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- [request by L.Robbiano]
SymmPoly = lista dei SymmPoly[D]
SymmPoly[D] = somma dei monomi squarefree di grado D
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- This is essentially the same as TgCone, but without selecting the Initial forms and returning a LIST (a bit like Gbas...
19 Oct 2016
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- The first example (with 24 indets) was consuming over 7Gbytes of RAM after 15 hours of CPU, so I killed the process (...
18 Oct 2016
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- I've just added a first check if the ideal is zero-dimensional.
Thanks to our new MinPoly that is much faster.
This... -
- Here is Mario's second example: I have chosen @ZZ/(101)@ for the coeffs, but the original was over @QQ@...
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- Here is Mario's first example: I have used coeffs in @ZZ/(101)@ but the original was over @QQ@...
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- Mario gave me two examples where Singular computes the radical *much* faster than CoCoA does.
I'll put the examples ...
17 Oct 2016
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- From looking at the code in @BuiltinFunctions-CoCoALib.C@, here is a list of other suspect impls:
* *@len@*
* *@syz... -
- Oh dear! The problem is more widespread. Even @len@ evaluates its arg twice 8-O
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- Are there any other fns with a similar problem? 8-{
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- Here is some code we could add to one of the CoCoA-5 tests:...
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- Two test cases:...
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- Having just looked at the code, I'm not entirely surprised.
Also why are there calls to @evalArgAsListOfRingElem@ ... -
- @ideal(RING, func(...))@ evaluates func once,
@ideal(func(...))@ evaluates func twice.
14 Oct 2016
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- I have reconfirmed that there is strange behaviour on the Linux machine here in Kassel. Compiler is @g++@ version 5....
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- Getting a better error message from the input @ideal(R,x)@ would be decidedly tricky. The error is actually triggere...
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- The source code the *@ideal@* function in CoCoA-5 appears to start at about line 1520 in @BuiltInFunctions-CoCoALib.C...
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- The options relating to @readline@ have inconsistent names:
* *@--with-readline=@*
* *@--with-libreadline=@*
The...
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