CoCoA » CoCoA-5

05 Apr 2018

14:26 Bug #1171: RealRoots: first point is sometimes wrong?

I suggest a function with the following semantics:
* call *RealRootsSmallValue(f, eps)*
* result is a list of close... John Abbott

14:19 Bug #1171: RealRoots: first point is sometimes wrong?

It is not as simple as I first thought. While the first order approximation I mentioned in comment 3 is correct, it ... John Abbott

09:29 Support #1175 (New): intersection

The intersection of MODULEs need to be exported. Elisa Palezzato

09:26 Feature #1174 (Closed): package of a function --> of an identifier!

How to have a function that says in which package is in the input?
Why does not describe have this feature?!
*202... Elisa Palezzato

04 Apr 2018

14:35 Bug #1172 (Feedback): MinSubsetOfGens: problem with generators = 0

Anna Maria Bigatti

14:31 Bug #1172: MinSubsetOfGens: problem with generators = 0

Fixed @GPolyList EmbedVectorList(const VectorList& theVL, const GRingInfo& theGRI, const long StartingFromCompIndex)@... Anna Maria Bigatti

12:27 Bug #1172: MinSubsetOfGens: problem with generators = 0

The problem is actually in @GBasis(M)@ when gens(M) contains a 0 element.
Fixing...
Anna Maria Bigatti

12:05 Bug #1172: MinSubsetOfGens: problem with generators = 0

which package?
Anna Maria Bigatti

09:30 Bug #1172 (Closed): MinSubsetOfGens: problem with generators = 0

In case of type MODULE there is:
J := submodule(ModuleOf(X), WithoutNth(L,I));
but it does not allow to v... Elisa Palezzato

11:34 Bug #1171 (In Progress): RealRoots: first point is sometimes wrong?

One can estimate the "stability" of the root by computing the value of the derivative at that root. By Taylor expans... John Abbott