Activity
From 18 Mar 2018 to 16 Apr 2018
05 Apr 2018
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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... -
- It is not as simple as I first thought. While the first order approximation I mentioned in comment 3 is correct, it ...
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09:29 Support #1175 (New): intersection
- The intersection of MODULEs need to be exported.
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- How to have a function that says in which package is in the input?
Why does not describe have this feature?!
*202...
04 Apr 2018
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14:35 Bug #1172 (Feedback): MinSubsetOfGens: problem with generators = 0
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- Fixed @GPolyList EmbedVectorList(const VectorList& theVL, const GRingInfo& theGRI, const long StartingFromCompIndex)@...
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- The problem is actually in @GBasis(M)@ when gens(M) contains a 0 element.
Fixing...
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- which package?
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- In case of type MODULE there is:
J := submodule(ModuleOf(X), WithoutNth(L,I));
but it does not allow to v... -
- One can estimate the "stability" of the root by computing the value of the derivative at that root. By Taylor expans...
03 Apr 2018
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- It seems that actually the problem is in the instability of the roots: the approximate root is probably close to the ...
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- I found this bug while debugging @ApproxSolve@.
I had noticed that, when the answer was wrong, it was just on the fi... -
- It seems that sometimes (very rarely) the first root given by @RealRoots@ is wrong...
23 Mar 2018
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- All 0-dimensional ideals (i.e. those in x,y,..), now take less than 1 second.
I have added (as John suggested) a tim... -
- (just to know, when testing)
All these examples in "c" have positive dimension.
All these examples in "x" are 0-dim... -
19 Mar 2018
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- Implemented in CoCoALib. See Feature #1169
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