Activity
From 27 Feb 2017 to 28 Mar 2017
28 Mar 2017
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22:32 Feature #206: Matrix equation solving: LinKer
- Anna Maria Bigatti wrote:
> Add also the syntax @LinKer(L)@ where L is a list of linear polynomials.
Modified cou... -
- Add also the syntax @LinKer(L)@ where L is a list of linear polynomials.
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17:11 Feature #313: Elim(vector<long>) as PPOrderingCtor
- Should we postpone this issue to the next version?
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- Postpone to next version?
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- QuotientBasis returns a list of power-products ordered by increasing lex (independently of the ordering in the ring)....
17 Mar 2017
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- > In some ways the "eat up" version appeals to me more; though it might discourage casual use... (would that matter?)...
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- I'm against this idea, because I think it might be badly misused.
I see you want to apply it to IsInRadical for a ... -
- If we do choose to introduce such a function, what should its name be?
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- Introduce new function to split a poly into its homog parts.
What should the result be?
* @vector<RingElem>@ whe...
14 Mar 2017
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- John Abbott wrote:
> I think that if the ideal @I@ is homog then @IsInRadical(f,I)@ is the same as the logical-and o... -
- I think that if the ideal @I@ is homog then @IsInRadical(f,I)@ is the same as the logical-and of @IsInRadical(f_d,I)@...
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- Currently @IsInRadical@ is defined in a CPKG5, but may soon be translated to CoCoALib.
The case of a homog poly in...
10 Mar 2017
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- The tests are producing strange results: it seems that there is some mysterious problem with the threadsafe counter :...
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- I now have a first impl of the "preprocessor definitions" header file.
One question which has just arisen is the f...
08 Mar 2017
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- After some consideration I think it is best to put all the CPP "flags" into a single header file, then any files whic...
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- There is a certain irony in finding this problem just 5 minutes after Mario left for good...
Is the implementation... -
- The following input gives an error:...
06 Mar 2017
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- Winfried Bruns wrote:
> Why not have a function for decomposing a polynomial into its homogeneous components? There ... -
- Here is the function.
I'm still uncertain whether this should be part of cocoalib or not.
Anyway it may be copied... -
17:50 Feature #1022: New "LF" function which is based on StdDeg
- Why not have a function for decomposing a polynomial into its homogeneous components? There is one in NmzIntegrate.
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- CoCoALib currently offers @deg@ (or equiv. @StdDeg@) and @wdeg@. These functions throw an exception if the ring has ...
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- [2017-03-06] Bruns requested by email to have a function like *@LF@* which works with respect to the standard grading...
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- *NOTE* I have just learned that if you press return while typing in the comment "subject" line, redmine then "finishe...
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- Here is a list of the CoCoA CPP flags:
* *@CoCoA_ULONG2LONG@*
* *@CoCoA_THREADSAFE_HACK@*
* *@CoCoA_DEBUG@*
* *@C...
05 Mar 2017
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- To me it seems that approach *(A)* is less convenient and more risky/annoying (since any problem is reported only aft...
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- Recently Bruns reported a compilation problem (see #1015) which turned out to be a problem of missing CPP flags. A s...
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- What is the best way to ensure that any important CPP flags are correctly set when using CoCoALib?
One approach is...
03 Mar 2017
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- I have now added a similar check for ULONG2LONG. It's all a nasty hack, but seems to work.
Checked-in too. Now I...
02 Mar 2017
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- JAA should also check the value of ULONG2LONG... perhaps need a template approach?
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- Implemented (using @submat@).
Still have to write tests and doc.
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- After personal discussion in Kassel: I agree.
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- Still to do: non-homogenous input
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- John Abbott wrote:
> What exactly does multiplicity do?
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> I made the mistake of trying to compute @multiplicity... -
- Set 100 for first GBasis printouts
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- John Abbott wrote:
> In the meantime, Anna plans to add the appropriate verbosity lines to @myDoGBasisElimFirst@.
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- Answer to previous question is that internally Anna uses a hack: she calls @myDoGBasisElimFirst@ rather than the gene...
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- John Abbott wrote:
> I prefer to have two distinct functions *@GBasis@* and *@ReducedGBasis@* because:
done.
Sho... -
- I prefer to have two distinct functions *@GBasis@* and *@ReducedGBasis@* because:
* the name *@ReducedGBasis@* gives... -
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- Changed interface (after personal discussion in Kassel):...
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- It seems to me that this will be covered by the "braced constructor" for C++ vectors that appeared in C++11.
What ... -
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- Implement @ReducedGBasis@ for @RingWeyl@ and other potential future non-commutative rings.
01 Mar 2017
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- I have now added an automatic check for @CoCoA_THREADSAFE_HACK@.
If you compile the library with one setting and try... -
- The problem goes away if the flag *@-DCoCoA_THREADSAFE_HACK@* is added to the compilation line.
At the moment I do... -
- The problem continues to arise with the following simplified compilation command:...
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- Here we have a minimal failing example:...
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- The problem arises under the following conditions:
* CoCoALib is configured with @--threadsafe-hack@ and @--no-boost... -
- Winfried Bruns reported a SEGV problem by email.
The following code will exhibit it: @F@ is a poly with a single t...
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