Activity
From 16 Feb 2017 to 17 Mar 2017
17 Mar 2017
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15:48 Feature #1033 (In Progress): Split poly into homog parts
- > In some ways the "eat up" version appeals to me more; though it might discourage casual use... (would that matter?)...
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15:16 Feature #1033: Split poly into homog parts
- 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...
25 Feb 2017
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11:11 Support #1013: GlobalManager: name of object in examples (and tests)
- > Would *@InitializeCoCoA@* be more comprehensible?
Perfect!
24 Feb 2017
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- Another (mild?) incompatibility is that in CoCoA-5 @RowMat@ and @ColMat@ accept as input lists of INT and/or RAT.
In... -
- At the moment JAA thinks that giving an error is probably better.
Is there a situation where one might reasonably ... -
- In CoCoA-5 one can call @RowMat([])@ and @ColMat([])@ to produce a matrix 1x0 or 0x1.
In CoCoALib a similar call pro... -
- What should @RowMat@ and @ColMat@ do if given am empty list/vector as argument?
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- What should these functions do if the matrix is 0-by-C or R-by-0?
Return a 0-by-1 or 1-by-0 matrix? -
- Another possibility: uglier, but possibly clearer?
* *@RowMatView@*
* *@ColMatView@*
The intention is that the r... -
- In just a couple of days I shall have to present CoCoALib and its examples.
Indeed, I shall probably concentrate on ... -
- At the moment all CoCoALib examples use the name *@CoCoAFoundations@* for the @GlobalManager@ object.
Is there a b...
20 Feb 2017
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- Currently I am just adding the "keyword" *@MatrixFp@*
Some code has already been written, and it is in the file @sr... -
- How does this issue differ from issue #83?
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- Mario makes essential use of various C++11 featues (_e.g._ @auto@ variable declarations).
The problem is that CoCo... -
- Mario would like to incorporate his Hilbert scheme code, but to do so he must compile with c++11 (because he uses sev...
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- @Winfried: could you check whether this problem persists in the latest version of CoCoALib?
There is version from 16...
17 Feb 2017
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- Apart from the improvements we can do for @elim@ (and are about to do ;-)
I think @myFinalizeGBasis@ can be improved...
16 Feb 2017
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- The function creating the vector of coefficients (wrt a QB) can be improved.
(this is an internal and costly functio... -
- The same example computed using @MinPolyQuot@ is much faster: about 0.2s :-)
Maybe @elim@ can be programmed to us... -
- I happened upon the file for the example, and tried it with @SetVerbosityLevel(1999)@.
It seems that much of the tim... -
- How about starting with just two ranges?
1--9 for users
10--??? for CoCoA packages and CoCoALib
I had also consi... -
- I prefer the mnemonic number of digits. So I suggest
1 digit -- free for users
2 digits -- cocoalib and cocoa pac...
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