Activity
From 07 Jan 2024 to 05 Feb 2024
05 Feb 2024
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21:29 CoCoALib Bug #1779 (In Progress): Radical error with lex (again)
- It would be easy to allow the factorize to return a result if the input is a non-zero constant.
I suppose I made it ... -
18:32 CoCoALib Bug #1779: Radical error with lex (again)
- first bug fixed.
New bug:... -
17:57 CoCoALib Bug #1779 (Closed): Radical error with lex (again)
- This problem resurfaced now that radical is in C++....
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12:21 CoCoALib Slug #1739: IsHomog for ideals
- Fixed. Now checking if gens are monomial, then if gens are homogeneous....
03 Feb 2024
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19:56 CoCoALib Bug #1361 (Closed): Compilation fails when compiling with libgsl
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18:10 CoCoALib Bug #1361: Compilation fails when compiling with libgsl
- Hi John, the new version compiles without problems.
02 Feb 2024
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20:34 CoCoALib Bug #1764: Verbosity messages: avoid printing BIG values
- Here is a list of files which have been checked (so that we do not repeatedly check them):
* @ApproxPts2.C@
* *@END@* -
20:21 CoCoALib Feature #1778: Homogenizer
- The ctor for @homogenizer@ will create the extended polynomial ring.
What properties should this extended ring have?... -
20:13 CoCoALib Feature #1778: Homogenizer
- Following KISS, it is probably best to try the simple interface first.
If it works well, and we like it, then we can... -
20:10 CoCoALib Feature #1778: Homogenizer
- I am not yet sure of the details, but I am hoping that it can be used as in this example:...
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20:04 CoCoALib Feature #1778 (In Progress): Homogenizer
- Here is a suggestion for a cleaner, simpler way to effect homogenization.
The main idea is to create a new type of o... -
20:01 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- Here is an example where the resulting gens could clearly be cleaned up:...
01 Feb 2024
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19:59 CoCoALib Slug #1737: Homogenization of an ideal with ZZ^1-grading
- Anna, are you willing to investigate point (1): the implementation behaving cleverly if the term order is wdeg-compat...
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12:10 CoCoALib Slug #1737: Homogenization of an ideal with ZZ^1-grading
- By Robbiano: No need to allow homogenization by an indet whose degree is not 1.
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11:04 CoCoALib Slug #1737: Homogenization of an ideal with ZZ^1-grading
- (2) I think we should *not* provide homogenization by an indet whose degree is not 1, because this is not entirely tr...
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11:00 CoCoALib Slug #1737: Homogenization of an ideal with ZZ^1-grading
- By Kreuzer-Robbiano: *Corollary 4.3.20*. It requires that P is positively graded.
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10:42 CoCoALib Design #1750: IdealOfPoints: allow duplicate points?
- @MakeSet@ is OK for CoCoA-5 and *affine points.* In CoCoALib/C++ and/or with projective points it is not so simple.
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10:17 CoCoALib Design #1750: IdealOfPoints: allow duplicate points?
- The CoCoA-5 manual already says that the points must be distinct (as a quick reaction to the problem reported by puw...
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10:03 CoCoALib Design #1750 (In Progress): IdealOfPoints: allow duplicate points?
- I'm more inclined to suggest @IdealOfPoints(R, MakeSet(pts))@ in the manual, if one wants to allow duplicates. Maybe...
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10:03 CoCoALib Design #1777: VerificationLevel: just 3? Low, high, guaranteed?
- Currently we allow any non-negative machine integer as the "verification level", but there is no clear semantics.
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09:50 CoCoALib Slug #1739: IsHomog for ideals
- Could it be useful to have also *@IsHomog3@* which returns a @bool3@?
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09:47 CoCoALib Slug #1739: IsHomog for ideals
- Source is in @SparsePolyOps-ideal.C:908@ more or less
31 Jan 2024
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22:26 CoCoALib Feature #1197: IsZeroDet: new fn
- There is some non-trivial code in *@MatrixOps-IsZeroDet.C@* developed from a project in Passau...
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22:16 CoCoALib Design #1750: IdealOfPoints: allow duplicate points?
- Should we implement this? Or postpone it? Or reject it?
What is most natural?
Is it really a mistake to ask for... -
22:14 CoCoALib Slug #1739 (In Progress): IsHomog for ideals
- I say impl the suggestion in the main description: it should be very little code, and may make some computations fast...
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22:07 CoCoALib Slug #1737 (In Progress): Homogenization of an ideal with ZZ^1-grading
- Yes, it would be possible to implement this, and perhaps not even too hard. *But why?*
When would it be useful? Is ... -
22:02 CoCoALib Support #1665: Compilation on Windows: problems for normaliz
- Is this still a problem? Maybe we can ask Nico?
25 Jan 2024
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20:27 CoCoALib Design #1703 (Resolved): Threadsafety, multithreading: optional fn arg (or separate fn)
- *SUMMARY*
Offering proper thread-safety is likely trickier than I had hoped, and probably decidedly more costly at r... -
20:22 CoCoALib Design #1703: Threadsafety, multithreading: optional fn arg (or separate fn)
- Anna reported compilation warnings with @clang@:
@std::mutex@ cannot be copied or moved, so attempting to have defau... -
16:26 CoCoALib Bug #1579: Readexpr/RingElem: unhelpful error message when input is wrong
- Still to do: check other cases.
I modified only @ReadExpr(string)@ and @ReadAtom@ (for symbol).
I prefer to documen... -
16:21 CoCoALib Bug #1579: Readexpr/RingElem: unhelpful error message when input is wrong
- I think I improved these error messages (hard to spot in string otherwise):...
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10:12 CoCoALib Bug #1579: Readexpr/RingElem: unhelpful error message when input is wrong
- Here is another test case: @RingElem(R, "y(x)")@
Looks like a function call...
23 Jan 2024
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22:14 CoCoALib Feature #1715: ProductBigInt (also ProductBigRat???)
- If I recall well, a first attempt was disappointing.
One may have to be clever if many factors are small integers.
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22:13 CoCoALib Feature #947: IsRadical for ideal?
- I think my idea might not work in general.
Let @I := ideal(x+y^2)@ then @I@ *is* radical. But if I add an extra ge... -
09:27 CoCoALib Design #1777: VerificationLevel: just 3? Low, high, guaranteed?
- I discussed withe the OSCAR people about putting something similar into Oscar. There it seemed simpler/clearer to of...
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09:25 CoCoALib Design #1777 (New): VerificationLevel: just 3? Low, high, guaranteed?
- Should there be just 3 @VerificationLevel@ values?
* *@low@* fast but greater chance of wrong answer
* *@high@* sl...
22 Jan 2024
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20:28 CoCoALib Feature #539: Functions to clean up a factorization
- Do you have a good use-case for this?
So far I have not needed such a function. Anyway priority is _low_.
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20:24 CoCoALib Feature #1349 (In Progress): ideal ctor where given gens are a gbasis
- What is the status of this issue?
The previous comment suggests that it should be _feedback_ or _closed_. Is there ... -
20:14 CoCoALib Design #1753 (Feedback): Clean up EulerTotient, InvTotient jungle in NumTheory-misc
- I have cleaned the code:
* removed the InvTotient iterator which is superseded by the new code (which is fast enough... -
19:41 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- Which ideal operations could benefit from @CleanGens@?
Sum, product, maybe colon. Radical?
It might make sense t... -
19:39 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- Here is an outline heuristic for cleaning the generators:
* remove zeroes
* collect all monomial gens, compute GBas... -
10:58 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- Anna: recover ideas, read it all, decide, implement, and close!
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11:01 CoCoALib Feature #1763: implement ideal(R) for zero ideal, with no generators?
- Anna: read it all, decide, implement, close!
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10:53 CoCoALib Design #908: Sum of ideals: what are the generators of (x) + (0)?
- Neither the manual for CoCoALib nor for CoCoA-5 mention that the generators are the mere concatenation, so we are all...
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10:47 CoCoALib Design #908: Sum of ideals: what are the generators of (x) + (0)?
- Anna has just confirmed that the documentation *does not guarantee* that @gens(I+J) = concat(...)@. This is good!
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10:44 CoCoALib Design #908: Sum of ideals: what are the generators of (x) + (0)?
- Status on 2024-01-22...
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10:37 CoCoA-5 Feature #368: port SmithNormalForm (CoCoA-4)package to CoCoA-5
- JAA has some new code from Passau which should be in integrated...
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10:36 CoCoALib Design #1768 (Closed): Limit indentation in verbose mesgs?
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10:28 CoCoALib Support #1761 (Feedback): MakeTermOrdMat: improve error mesg
21 Jan 2024
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20:33 CoCoALib Slug #1569 (In Progress): IsInRadical too slow (test-RadicalMembership)
- The "stupid approach" gets the answer in 10s (on my Linux laptop)....
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20:21 CoCoALib Bug #1662: txt2tags: problem with filenames containing "_" or "-"
- What is the status of this issue?
Is it now resolved if one uses the updated @txt2tags@ which Nico mentioned? Which... -
20:16 CoCoALib Bug #1579: Readexpr/RingElem: unhelpful error message when input is wrong
- I have added a new error mesg for the case that the first extra char is open-bracket or letter or digit.
The err mes... -
20:01 CoCoALib Design #64: submat takes only vector<long>
- In comment 8 Anna says that practically all uses could be replaced by *@FirstRows(M,n)@*, so it makes a lot of sense ...
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19:46 CoCoALib Bug #1361: Compilation fails when compiling with libgsl
- Hi Florian. Does compilation still fail with version 0.99818 (from website)? Thanks!
19 Jan 2024
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18:11 CoCoA-5 Design #1626 (Feedback): NewMat: should be obsolescent?
- JAA has revised the manual entry, and changed calls in @packages@ to @ZeroMat@
Anna will revise the defn in @Backwar... -
16:26 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- Tested also for @DenseUPolyRing@ (and made example for DUP)
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15:02 CoCoA-5 Bug #1623 (Feedback): EmacsUI: annoying colours
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15:02 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- Done:...
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09:36 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- John Abbott wrote:
> Does the printing change if we use @indent@? I suppose not; but could it, should it?
It is ...
16 Jan 2024
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19:07 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- Not bad! Minor variant: using square brackets for lists...
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15:52 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- New suggestion (the most compact I can think of)...
15 Jan 2024
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19:54 CoCoA-5 Bug #1623: EmacsUI: annoying colours
- Can we conclude this discussion, implement, and close? :-)
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19:49 CoCoA-5 Bug #469: Emacs UI: keywords in multiline comments
- [2024-01-15] I have just confirmed that the bug is still there.
If the code is commented out with *@//@* or *@--@* ... -
19:42 CoCoA-5 Design #1626: NewMat: should be obsolescent?
- Yes, we should make @NewMat@ obsolete/backward-compatible-only.
This should be an easy change (don't forget the doc ... -
19:39 CoCoA-5 Feature #1541: foreach with ref to list entry?
- Postponing this issue because it requires discussion, and could be tricky/lengthy if we opt to to make the change.
I... -
19:32 CoCoA-5 Slug #1363 (In Progress): Emacs UI: slow with long lines
- I did take a look at @so-long.el@, and it did help a bit.
Handling of long lines is a known emacs weakness; probably...
13 Jan 2024
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22:27 CoCoALib Slug #1756: deg(f) is slow if f is long
- I have re-run the example from comment 2: it now takes 0.001s.
I'm undecided about the extra generality handling t... -
22:20 CoCoALib Design #1768: Limit indentation in verbose mesgs?
- Can we close this?
*Anna* do you agree? -
22:16 CoCoALib Slug #1739: IsHomog for ideals
- This should be easy to implement, right?
I was wondering how often one would want to know whether an ideal is homog ...
12 Jan 2024
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13:18 Support #1774 (Feedback): Look of first Redmine page linked from CoCoA web page
- I changed this page, which may be updated only by admin, so that it just contains links to other pages.
It now refer... -
11:53 CoCoA-5 Support #1776: CoCoA-5 releases on redmine
- (Just keep updating the description)
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11:52 CoCoA-5 Support #1776 (New): CoCoA-5 releases on redmine
- Links to the list of issues dealt with in each release:
*CoCoA-5*: Computer Algebra System
- (2020) *CoCoA-5.3.... -
11:45 CoCoALib Support #1775: CoCoALib releases on redmine
- (Just keep updating the description)
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11:29 CoCoALib Support #1775 (New): CoCoALib releases on redmine
- Links to the list of issues dealt with in each release:
*CoCoALib: C++ library*
- (2024) *CoCoALib-0.998??* h...
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