Activity
From 27 Feb 2024 to 27 Mar 2024
27 Mar 2024
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17:47 CoCoALib Feature #1206 (Resolved): syz, SyzOfGens: which shifts for zero?
- Still to do: documentations showing how to deal with 0 entries, in CoCoALib and in CoCoA5
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17:43 CoCoALib Feature #1206: syz, SyzOfGens: which shifts for zero?
- Anna Maria Bigatti wrote:
> Should we make @SyzOfGens@ obsolescent? does it do anything more than calling @syz(gens... -
17:31 CoCoALib Feature #598: Syzygy for modules: non-homogeneous module
- I moved this issue from CoCoA-5 to CoCoALib
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17:24 CoCoALib Feature #598 (In Progress): Syzygy for modules: non-homogeneous module
26 Mar 2024
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17:19 CoCoALib Feature #1667: GBasis over ZZ: port to CoCoALib
- Michele Toriell is asking for this. There was C++ from when i was in Passau: dig it out, and blow the dust off.
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17:14 CoCoALib Feature #598: Syzygy for modules: non-homogeneous module
- Good idea to make comprehensive tests.... perhaps not easy.
Why "feedback" and 10% complete?
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10:02 CoCoALib Feature #598 (Feedback): Syzygy for modules: non-homogeneous module
- This issue is old.
I'm making a test file test-sys.cocoa5.
I'll update and write there what we have working for hom... -
17:12 CoCoA-5 Feature #1072: syz: apply to ModuleElem?
- Agreed that we should reject.
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13:35 CoCoA-5 Feature #1072 (Rejected): syz: apply to ModuleElem?
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09:59 CoCoA-5 Feature #1072 (Resolved): syz: apply to ModuleElem?
- I'm inclined to reject this.
It would be ambiguos: syz of the components, or of the cyclic module it generates? -
14:36 CoCoALib Design #582: Error codes: use same code for "not poly ring" and "not elem poly ring"
- I think this has been agreed upon a long time ago, as explained in #582-3.
Moreover the recent addition of the conte... -
14:22 CoCoALib Design #1807 (In Progress): Error codes: "Not..." for "blah must be ..." -- change prefix
- In the general picture of improving the error codes, I suggest a trivial (though extensive) change.
Look at these na... -
13:44 CoCoA-5 Feature #1806 (New): New function ModuleElems? (like RingElems(RING, STRING))
- The best shortcut to make a submodule is via @SumboduleCols/Rows@.
As pointed out in #1072-#1, even for one genera... -
12:16 CoCoA-5 Feature #1805 (New): Add CoCoA-5 syntax: syz(<F,> list of ModuleElem)
- Currently we can call SyzOfGens(M), but it should also be possibile to call syz(gens(M)).
This is tedious because ... -
11:50 CoCoALib Feature #1793: Use ErrorContext instead of string FnName
- Added also to NewFreeModuleForSyz.
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10:42 CoCoALib Feature #1206: syz, SyzOfGens: which shifts for zero?
- Anna Maria Bigatti wrote:
> This is my suggestion: implement a new function @syz0@ which allows 0s in the input (giv...
25 Mar 2024
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19:31 CoCoALib Design #1804: Use long long (at least sometimes)?
- Personally I was hoping to drop support for 32-bit platforms, but @long@ on MinGW is only 32-bits. Does MinGW offer ...
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19:29 CoCoALib Design #1804 (In Progress): Use long long (at least sometimes)?
- Winfried Bruns suggested in issue #1661 to consider using *@long long@* wherever we want more than 32-bits.
Investig... -
19:16 CoCoALib Feature #1797: Add a function CleanupGens making some easy cleaning on the generators?
- This might be a separate issue: should there also be a similar function which "prepares" the generators for computin...
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19:06 CoCoALib Feature #1803 (New): Improve trivial operations with ideal whose GBasis is [1]
- Sum is clever -- if HasGBasis(I) and is ideal(1).
Do the same for product and for other similar operations.... -
19:05 CoCoALib Design #1802: Tidying ideal generators (for non-polynomial ideals)
- First steps:
* remove 0 generators
* if any generator is 1 (or invertible) then the ideal is 1
* for integer ideal... -
19:02 CoCoALib Design #1802 (New): Tidying ideal generators (for non-polynomial ideals)
- Generalize the ideas of issue #1647 to other types of ideal (and modules?)
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19:02 CoCoALib Design #1647 (Closed): Suppress zero from ideal generators? Detect 1 and simplify generators?
- Moving note-33 (product) to another issue, because not related to generators.
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18:13 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- Sum is clever -- if HasGBasis(I) and is ideal(1)
Do it also for product.... -
18:51 CoCoALib Design #1801: BuildInfo
- The function for CoCoA-5 is VersionInfo() defined in BuiltingFunctions.C
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18:49 CoCoALib Design #1801: BuildInfo
- We need to consider the behaviour both in CoCoALib and in CoCoA-5.
Anna suggests that it is more helpful to mainta... -
18:47 CoCoALib Design #1801 (In Progress): BuildInfo
- Three things:
* why do some preprocessor flags have prefix *@COCOA_@* while others have *@CoCoA_@* ?
* for whom are... -
18:18 CoCoALib Bug #1661 (Resolved): Microsoft: cannot compile with signal handling
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09:32 CoCoALib Bug #1661: Microsoft: cannot compile with signal handling
- Anna Maria Bigatti wrote:
> Add the value of this flag to "VersionInfo()" in CoCoA-5 (work for me)
and in BuildI... -
09:30 CoCoALib Bug #1661: Microsoft: cannot compile with signal handling
- Add the value of this flag to "VersionInfo()" in CoCoA-5 (work for me)
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18:05 CoCoALib Bug #1726 (Closed): Dangling references to temporaries
- I believe I have made all necessary changes. So closing -- it works fine for us...
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17:55 CoCoALib Design #1720: DivAlg in CoCoALib
- to be improved (see Nicolas Jagersma code using GPoly)
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17:49 CoCoALib Design #1800: Conversion from SmallPrime to UNSIGNED long?
- We have long tried to avoid unsigned values because they can cause inconvenient, silent, automatic conversions.
But ... -
17:47 CoCoALib Design #1800 (In Progress): Conversion from SmallPrime to UNSIGNED long?
- Currently there is an "implicit" conversion from @SmallPrime@ to @signed long@.
Should the conversion instead be to ... -
17:49 CoCoALib Design #1649 (Closed): Add file SparsePolyOps-vector.C
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09:06 CoCoALib Design #1649: Add file SparsePolyOps-vector.C
- Anna Maria Bigatti wrote:
> I suggest having all headers in SparsePolyOps-RingElem.H (well indicated) and the "vecto... -
08:22 CoCoALib Design #1649: Add file SparsePolyOps-vector.C
- After trying to rearrange the header files I found this problem.
There are functions on vectors of RingElem need hea... -
08:12 CoCoALib Design #1649 (Resolved): Add file SparsePolyOps-vector.C
- After closing I realized that the "coefficients" functions were missing and that the .H files were not aligned.
Stil... -
07:42 CoCoALib Design #1649 (Closed): Add file SparsePolyOps-vector.C
- Anna Maria Bigatti wrote:
> Add syz and syz0 (allowing 0s) for vector of RingElem
*syz* should stay in @submodule...
24 Mar 2024
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10:52 CoCoALib Design #1799: Clean out OLD CODE?
- Apart from being untidy (& possibly embarassing) the old code does sometimes cost time if we have to maintain it.
Wh... -
10:50 CoCoALib Design #1799 (New): Clean out OLD CODE?
- The sources contain some quite old code which is likely no longer used.
We should identify the code and consider rem...
22 Mar 2024
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23:20 CoCoALib Bug #1661: Microsoft: cannot compile with signal handling
- A macro like ...
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22:04 CoCoALib Bug #1661: Microsoft: cannot compile with signal handling
- I have been working through Nico's changes. Still undecided about several of them :-/
The 32-bit vs 64-bit problems... -
23:13 CoCoALib Support #302: Compilation on M$Windows: Visual Studio
- The problem with ...
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21:01 CoCoALib Support #302: Compilation on M$Windows: Visual Studio
- Is any of this still relevant?
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18:18 CoCoA-5 Feature #78: Elim ordering and matrix ordering in CoCoA-5
- I like Anna's possible shortcut from comment 9.
Shall we impl it?
*NOTE* also for CoCoALib? -
18:17 CoCoALib Feature #313 (In Progress): Elim(vector<long>) as PPOrderingCtor
- Probably the functions ElimMat-like are good enough for this.
At least we should write some explicit example here (f... -
18:12 CoCoALib Slug #777: SLUG: elimination
- There are two improvements we can still make:
# tell myFinalizeGBasis interreduce only the polynomials with the want... -
17:25 CoCoALib Slug #777: SLUG: elimination
- Now it takes 165s (I don't know how long it was before)
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15:58 CoCoALib Slug #777: SLUG: elimination
- Anna Maria Bigatti wrote:
> Apart from the improvements we can do for @elim@ (and are about to do ;-)
I wonder if... -
18:01 CoCoALib Slug #1394 (Resolved): Oddly slow GBasis computation (slow final cleanup)
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17:56 CoCoALib Slug #1394: Oddly slow GBasis computation (slow final cleanup)
- John Abbott wrote:
> Anna points out that the actual cost is the normal form reduction inside the *@isin@* operator.... -
17:53 CoCoALib Slug #1394 (In Progress): Oddly slow GBasis computation (slow final cleanup)
- Anna points out that the actual cost is the normal form reduction inside the *@isin@* operator. The computation of t...
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16:43 CoCoALib Slug #1394: Oddly slow GBasis computation (slow final cleanup)
- Current timings after the LT checking in the final cleaning (just marginally better than before, but most of the time...
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16:16 CoCoALib Slug #1394: Oddly slow GBasis computation (slow final cleanup)
- I changed the verbosity to 130 (to see what goes on in the -Final clean up)
Now it is faster because the polynomials... -
16:19 CoCoALib Slug #1796: myFinalizeGBasis ("Final clean up") should be more flexible
- Improved (see #777-12).
Still, could be more clever when computing elimination and some reductions are completely us... -
14:38 CoCoALib Feature #1094: Revive code for SelfSaturating GBasis
- Remember to add tests to test-GB.cocoa5
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14:32 CoCoALib Feature #1212 (Closed): New function: GBasisByHomog
- Good thing I wrote #1212-19! My first implementation was wrong (embarrassing).
Now all implemented and I added a Co... -
10:20 CoCoALib Support #942: Which names to use? Intersection/saturation vs intersect/saturate
- I prefer to go through similar situations before changing the current names.
Make a list.
Postponing.
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10:18 CoCoALib Slug #967: Improve saturate
- Different situations to consider (from #1619-8)
* monomial
* homog
* principal
* univariate
* general
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10:14 CoCoALib Feature #1619 (Closed): Make saturate available in CoCoALib
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09:38 CoCoALib Design #1649 (Resolved): Add file SparsePolyOps-vector.C
- Add syz and syz0 (allowing 0s) for vector of RingElem
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09:35 CoCoALib Design #1649 (Feedback): Add file SparsePolyOps-vector.C
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09:35 CoCoALib Bug #1726 (Feedback): Dangling references to temporaries
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09:30 CoCoALib Design #1798: Computing in sub polyring
- The test in note-3 would be faster if called in the minimal sub-polyring.
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09:27 CoCoALib Design #1798: Computing in sub polyring
- From #1641-11
It seems it's the "high number of variables" problem, and syz itself is quite fast: this examples take... -
09:23 CoCoALib Design #1798 (New): Computing in sub polyring
- Investigate whether it is a good idea to adapt certain operations to compute in a sub polyring (without unnecessary i...
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09:29 CoCoALib Slug #1588: ElimMat is slow
- I though we had a class for incremental gaussian reduction. That should be useful in this case!
We can also make ... -
09:13 CoCoALib Feature #1780 (Closed): radical for ideals in SparsePolyRing: code in C++
- The old CoCoA-5 radical code is currently still available as function @radical_COCOALANGUAGE@ in the radical.cpkg5 pa...
21 Mar 2024
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20:40 CoCoALib Slug #1756: deg(f) is slow if f is long
- My previous comment just above is correct, but we can sometimes do better.
I think we need to consider just the "low... -
20:31 CoCoALib Bug #1749 (Closed): Configuration hiccups on Mac M1
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20:29 CoCoALib Design #1085 (Closed): Fns with "OUT" args: should they give ERR::MixedRings?
- I'm too lazy to track down all the functions which ought to be tested, and then to write the corresponding tests.
So... -
20:24 CoCoALib Design #1606 (Closed): Return type with const
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20:18 CoCoALib Bug #1641 (Closed): gcd does not recognize univariate input
- I have added some new tests to @test-SparsePolyRing1.C@.
I conform that Anna's example from comment 11 does seems to... -
12:02 CoCoALib Bug #1641: gcd does not recognize univariate input
- The problem for multivariate syz with many indets (from note-8 on) seems to be considered in #1057 and #1068, so I wo...
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11:31 CoCoALib Bug #1641: gcd does not recognize univariate input
- It seems it's the "high number of variables" problem, and syz itself is quite fast: this examples takes ~4s on my com...
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10:25 CoCoALib Bug #1641: gcd does not recognize univariate input
- Ah yes, I do have debugging on.
Do you get a measurable time difference if the ring contains just 3 indets or if it ... -
10:01 CoCoALib Bug #1641: gcd does not recognize univariate input
- John Abbott wrote:
> The new code seems to work now, and is faster if the polys are recognized as univariate.
>
>... -
18:02 CoCoALib Slug #967: Improve saturate
- I also added the factorization in the case of a monomial (similar test as in #967-5, now in test0saturate.cocoa5).
... -
17:56 CoCoALib Bug #1790 (Closed): saturate with zero ideals
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13:27 CoCoALib Bug #1790: saturate with zero ideals
- John Abbott wrote:
> The problem was that in @BuiltInFunctions-CoCoALib.C@ there was a call to @I->mySaturate(J)@ in... -
17:55 CoCoALib Feature #1619: Make saturate available in CoCoALib
- added CoCoA-5 test-saturate.cocoa5
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17:54 CoCoALib Feature #1619: Make saturate available in CoCoALib
- John Abbott wrote:
> Maybe different types:
> * monomial
> * principal
> * univariate
> * general
also homog -
11:55 CoCoA-5 Slug #1068: PolyRing constructor: NewOrdvArith computed twice
- I added some verbosity...
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09:39 CoCoA-5 Bug #1794: Do not use random inside tests!!
- John Abbott wrote:
> The cause is not too surprising: @demo-Osaka2015.cocoa5@ uses a random example (on line 72).
>...
20 Mar 2024
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22:41 CoCoA-5 Bug #1794 (In Progress): Do not use random inside tests!!
- The cause is not too surprising: @demo-Osaka2015.cocoa5@ uses a random example (on line 72).
Evidently, with debuggi... -
22:03 CoCoALib Bug #1641 (Resolved): gcd does not recognize univariate input
- The new code seems to work now, and is faster if the polys are recognized as univariate.
What I do not understand ... -
16:48 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- This is all done (I believe) for ideals in SparsePolyRing.
Do it also for ideals in other rings (should we have anot... -
15:53 CoCoALib Feature #1788 (Closed): New MatrixView/function "FirstRows/FirstCols"?
- Added documentation for CoCoALib/5.
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15:26 CoCoALib Feature #1788 (Feedback): New MatrixView/function "FirstRows/FirstCols"?
- I liked this too much and I did it.
Called in some lib/5 tests, called by GradingMat.
Easy enough. should not need...
19 Mar 2024
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22:21 CoCoA-5 Support #629: Windows-GUI: compilation with MinGW
- I know it has been quite some time, but I have made some progress on this: Even the GUI works for me!
However, there... -
22:10 CoCoALib Bug #1641: gcd does not recognize univariate input
- Made some progress. This is more tedious than I thought... the doc for CoCoALib could be better... (and the design t...
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20:18 CoCoALib Bug #1641: gcd does not recognize univariate input
- The problem code is in @SparsePolyOps-RingElem.C@ around line 718 (search for @SyzOfGens@ or maybe just @syz@).
I... -
20:05 CoCoA-5 Support #1759: Better error mesg for 1.2.3.4?
- The relevant source code is probably in @Parser.C@ near line 1924 inside the function @parseSelectors@ right after @c...
18 Mar 2024
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21:48 CoCoALib Bug #1726: Dangling references to temporaries
- *Hi Jerry James*
Could I send you a TGZ of the latest sources, so that you can try compiling, and see whether there ... -
21:45 CoCoALib Support #942: Which names to use? Intersection/saturation vs intersect/saturate
- *@sat@* is perhaps too short, and may be ambiguous with the *@SAT@* (satisfiability) family of functions.
I'm undeci... -
18:44 CoCoALib Support #942: Which names to use? Intersection/saturation vs intersect/saturate
- [Conversation with Robbiano]
XXXX-ation gives a commutative feeling, XXXX-ate gives and action (non-commutative) fee... -
18:35 CoCoALib Support #942 (In Progress): Which names to use? Intersection/saturation vs intersect/saturate
- Also *@IntersectionList@*
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14:10 CoCoALib Support #942: Which names to use? Intersection/saturation vs intersect/saturate
- In CoCoA-4 we had intersection and saturation. Now we have a mixture...
Singular and Macaulay use *@intersect@* a... -
21:39 CoCoA-5 Feature #823: NewPolyRing with weights -- better interface?
- I did slightly prefer the name I suggested in note 7 (but it is longer).
Anyway, this is a good improvement to the i... -
17:02 CoCoA-5 Feature #823: NewPolyRing with weights -- better interface?
- Added example in ex-PolyRing2.C
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16:17 CoCoA-5 Feature #823 (Closed): NewPolyRing with weights -- better interface?
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21:31 CoCoALib Bug #1740: MinGens gives non minimal gens *if some deg=0*
- Perhaps *@ERR::NYI@* ?
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09:51 CoCoALib Bug #1740: MinGens gives non minimal gens *if some deg=0*
- For the time being: should we give error? (as if non-homogeneous?)
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21:27 CoCoA-5 Feature #1583: New fn ElapsedTimeFrom?
- I'm tempted to *reject* this. Yes, there is the risk mentioned in the description, but it is not so serious -- if ne...
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21:20 CoCoA-5 Support #1603: Unhelpful behaviour in "compatibility mode": double error mesg
- I'm very tempted to mark this one *won't fix*.
It would likely be a lot of work modifying the parser/interpreter, an... -
21:14 CoCoA-5 Support #1650 (In Progress): Potentially confusing prompt: waiting for semicolon
- Since some languages (such as Julia) do not require semicolons to end the command while CoCoA does, perhaps the a com...
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21:05 CoCoA-5 Feature #1701: Preliminary packages
- We can put a page for preliminary packages in the main manual. It should either contain a list of the packages (and ...
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20:59 CoCoA-5 Design #1709 (In Progress): Test tut-CoCoLA2
- Maybe we can change the relevant line(s) to something like:...
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20:51 CoCoA-5 Bug #1795 (Feedback): Makefile problem: needlessly relinks CoCoAInterpreter
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20:49 CoCoALib Slug #1756: deg(f) is slow if f is long
- If the grading is positive and over ZZ^1 then we use the following general cut-off so that we do not need to scan the...
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20:29 CoCoALib Design #1606 (Feedback): Return type with const
- This was mostly done anyway. I changed some things in the involutive code (without really understanding it).
I ha... -
09:51 CoCoALib Design #1606: Return type with const
- John will investigate this, and hopefully close it.
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18:39 CoCoALib Feature #1797: Add a function CleanupGens making some easy cleaning on the generators?
- In principle we could make 2 such functions: one faster, and one more thorough.
But is it worth it? KISS?
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16:09 CoCoALib Feature #1797 (New): Add a function CleanupGens making some easy cleaning on the generators?
- In #1645#note-28 there is a list of easy checks one might want to do on a given set of polynomial generators.
See al... -
16:15 CoCoALib Bug #1789 (Closed): GradingMat with negative weights should complain (or deal with them properly!!)
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16:10 CoCoALib Design #1647: Suppress zero from ideal generators? Detect 1 and simplify generators?
- List in #1647-9
Anna Maria Bigatti wrote:
> Add a function @CleanupGens@ making some more easy checks?
Moved i... -
16:03 CoCoALib Design #1326 (Closed): Modify function myElim so that it returns ideal? (not quite)
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15:58 CoCoALib Feature #813 (Feedback): Implement "elim" in CoCoALib
- I activated a test (slightly simplified test7 in test-GOperation1.C).
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15:22 CoCoALib Feature #813: Implement "elim" in CoCoALib
- See #1326#note-10 for discussion about elim(I,X) vs elim(X,I).
Apart from this, we should only add some tests in CoC... -
13:54 CoCoALib Slug #1796 (New): myFinalizeGBasis ("Final clean up") should be more flexible
- We have noticed that sometimes (with SetVerbosityLevel(100)) the time spent in "Final clean up" is quite long.
The c... -
09:45 CoCoALib Support #1510: Documentation for SparsePolyOps?
- The SparsePolyOps files are quite focused on a specific topic.
Doc would be easier to maintain if kepts separately.
... -
09:35 CoCoALib Support #1510: Documentation for SparsePolyOps?
- See #1783-2 : one doc file for each topic/file
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09:23 CoCoALib Feature #1619: Make saturate available in CoCoALib
- Maybe different types:
* monomial
* principal
* univariate
* general
17 Mar 2024
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19:17 CoCoALib Bug #1662: txt2tags: problem with filenames containing "_" or "-"
- I have just tested with txt2tags v3 (commit bc7f2c43f1a59ea96f37c77b63c4b44fe51e1b08) and it works perfectly fine on ...
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10:53 CoCoALib Bug #1662: txt2tags: problem with filenames containing "_" or "-"
- We must also explain what the solution is in the documentation (and perhaps also error messages?).
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10:59 CoCoA-5 Bug #1795 (In Progress): Makefile problem: needlessly relinks CoCoAInterpreter
- I think I have corrected the error. Must do more checking.
16 Mar 2024
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23:46 CoCoALib Bug #1662: txt2tags: problem with filenames containing "_" or "-"
- Sorry, seems like I forgot to respond back then.
I am using the **latest** v2.7-dev.
It is important that it is the... -
21:28 CoCoALib Bug #1662: txt2tags: problem with filenames containing "_" or "-"
- Let's try to download the new txt2tags, and test it.
*Nico* which version should we obtain?
*Anna* how do we test i... -
21:55 CoCoALib Design #1511 (Closed): Use C++14 constexpr
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21:54 CoCoALib Bug #1749: Configuration hiccups on Mac M1
- Failed to verify on Anna's old intel MacBook: compiler gave an error about @ptrdiff_t@ in some system header (sigh)
... -
21:52 CoCoALib Feature #1770 (Closed): Evaluate polynomial function/class
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21:51 CoCoALib Feature #206: Matrix equation solving: LinKer
- Why such a long discussion and no resolution?
Can we finish this quickly? Or should we postpone?
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21:47 CoCoALib Feature #1619 (In Progress): Make saturate available in CoCoALib
- I have added @saturate@ to the relevant header file. And also a test for #1790.
Added some doc. Do we need tests? ... -
21:44 CoCoALib Bug #1641: gcd does not recognize univariate input
- This may well be length to resolve properly, but I really should look at it soon.
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21:42 CoCoALib Feature #1417: RadicalZeroDim with extra parameter for GBasis timeout
- I am currently unsure how useful it would be to let the caller choose a time-out in seconds.
It may be simpler to of... -
21:38 CoCoALib Design #894: strict enum types: C++11 extension
- I wonder whether it might not be better to wait until we switch to the C++20 standard, and so can use *@using ENUM@*....
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21:24 CoCoALib Slug #967: Improve saturate
- I have just tried the example from #note-5, and it took just less than 1s on my computer (with v0.99823).
I have inc... -
21:20 CoCoALib Design #1085 (Feedback): Fns with "OUT" args: should they give ERR::MixedRings?
- This seems to have been done already, at least mostly. So it has morally been in feedback for several month, at leas...
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14:11 CoCoA-5 Bug #1795: Makefile problem: needlessly relinks CoCoAInterpreter
- I vaguely recall Anna asking for an improvement to the @Makefile@ structure; I do not really recall why.
I also reca... -
14:07 CoCoA-5 Bug #1795 (Feedback): Makefile problem: needlessly relinks CoCoAInterpreter
- Assuming that @CoCoAInterpreter@ is already compiled (and up-to-date).
Running @make check@ in directory @src/CoCoA-... -
12:16 CoCoA-5 Bug #1794: Do not use random inside tests!!
- My @g++@ reports version info @gcc version 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04)@
My clang reports version info @Ubu... -
12:13 CoCoA-5 Bug #1794 (Resolved): Do not use random inside tests!!
- We must avoid using @random@ inside tests. Relevant files are
* @demo-Osaka2015.cocoa5@
* @ErrMesg.cocoa5@
* @tes... -
11:11 CoCoALib Feature #1793 (In Progress): Use ErrorContext instead of string FnName
- While resolving issue #1726 I needed to call some arg-check functions specifying where in the source the arg-check wa...
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11:06 CoCoALib Feature #1793 (In Progress): Use ErrorContext instead of string FnName
- There is now a class *@ErrorContext@* and macro @CoCoA_ERROR_CONTEXT@ for recording:
* function name
* file name
*...
15 Mar 2024
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22:03 CoCoALib Design #1792: CpuTimeOut: arg of type ErrorContext?
- Analogous question for @InterruptReceived@?
Note that C++20 includes something quite similar to @ErrorContext@...
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22:01 CoCoALib Design #1792 (New): CpuTimeOut: arg of type ErrorContext?
- Currently @CpuTimeOut@ expects a C-string nae of the fn.
Should it accept instead a @ErrorContext@? -
20:08 CoCoALib Bug #1726 (Resolved): Dangling references to temporaries
- Resolved, and checked in. But still need to so some cleaning... (sigh!)
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19:25 CoCoALib Bug #1790 (Resolved): saturate with zero ideals
- The problem was that in @BuiltInFunctions-CoCoALib.C@ there was a call to @I->mySaturate(J)@ instead of @saturate(I,J...
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18:33 CoCoALib Feature #743: Better errors: give supplementary info about the error
- Let's finish this for version 1.0
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18:24 CoCoA-5 Design #1456: IntersectList or IntersectionList
- Think also about the names saturate/saturation, intersect/intersection.
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15:40 CoCoA-5 Feature #823: NewPolyRing with weights -- better interface?
- See #1789-10
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15:37 CoCoALib Bug #1789 (Resolved): GradingMat with negative weights should complain (or deal with them properly!!)
- Anna Maria Bigatti wrote:
> Added check in the definition of NewPolyRing(K, X, WeightsMat).
> Should I rename it Ne... -
15:02 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- Anna Maria Bigatti wrote:
> elim of (I,X) or (X,I)?
comparison with other functions in CoCoA/CoCoALib: (I,X) s... -
14:54 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- elim of (I,X) or (X,I)?
Pro for (I,X)
# respects the rule "more structured argument first"
# like Singular/Os... -
14:44 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- Anna Maria Bigatti wrote:
> New question: @elim(I, X)@ (currently in CoCoALib) or @elim(X, I)@ (traditionally in ... -
14:24 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- New question: @elim(I, X)@ (currently in CoCoALib) or @elim(X, I)@ (traditionally in CoCoA)?
They have to be sa... -
14:21 CoCoALib Design #1326 (Resolved): Modify function myElim so that it returns ideal? (not quite)
- As explained in #note-7, I didn't like the first approach.
So I changed the internal functions as @J->myAssignElim(I...
14 Mar 2024
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20:46 CoCoALib Bug #1726: Dangling references to temporaries
- This is one of those mind-numbing tasks. I think I have made most of the changes, but there is still plenty of clean...
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17:58 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- I'm halfway through the process, but this is tricky.
[I think this is interesting, because it's the first try in cha... -
10:02 CoCoALib Design #1326: Modify function myElim so that it returns ideal? (not quite)
- It seems we agree on changing this interface, so I consider this approved.
I'll go on with this, so we can proceed a... -
12:04 CoCoALib Bug #1789: GradingMat with negative weights should complain (or deal with them properly!!)
- Added check in the definition of NewPolyRing(K, X, WeightsMat).
Should I rename it NewPolyRingWeights? (not yet do... -
10:12 CoCoALib Bug #1789: GradingMat with negative weights should complain (or deal with them properly!!)
- John Abbott wrote:
> [do we require the rows to be in lin indep?]
yes -
09:51 CoCoALib Bug #1789: GradingMat with negative weights should complain (or deal with them properly!!)
- John Abbott wrote:
> The documentation says that if the grading-dim is not specified then it is taken to be 0. Perh... -
11:29 CoCoALib Design #832: Generalize grading matrix
- John Abbott wrote:
> My current preference is to allow gradings with negative weights, and possibly linearly depende... -
09:24 CoCoALib Bug #1791 (Closed): Fix Google-search link in the html documentation
- Fixed path in published pages https://cocoa.dima.unige.it/cocoa/cocoalib/doc/html/
and in @CoCoALib-0.99/doc/aux-txt... -
09:22 CoCoALib Bug #1791 (Closed): Fix Google-search link in the html documentation
- I guess we just use "grep" to search in the documentation of CoCoALib, and we did not realize the Google search was b...
13 Mar 2024
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21:19 CoCoALib Feature #575: Investigate using cmake for configuration
- This has been dormant for 7 years. Should we close/reject it?
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21:16 CoCoALib Support #1761 (Closed): MakeTermOrdMat: improve error mesg
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21:11 CoCoALib Design #832: Generalize grading matrix
- My current preference is to allow gradings with negative weights, and possibly linearly dependent weight matrices.
T... -
21:01 CoCoALib Bug #111 (Closed): Mod fn for computing remainder
- As far as I can tell we have had no problems with this over the last 10 years.
I have rectified the documentation (i... -
20:44 CoCoALib Bug #1790: saturate with zero ideals
- The code probably needs to be redesigned: we spoke about this last time, that ideals should not be modifiable, but th...
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20:37 CoCoALib Bug #1790 (In Progress): saturate with zero ideals
- The relevant source code is in *@TmpGOperations.C@* near line 864.
One problem is that an empty @PolyList@ does know... -
19:27 CoCoALib Bug #1790: saturate with zero ideals
- It should be easy to fix these two cases. Are there any others involving the zero ideal?
Make several tests and adj... -
19:26 CoCoALib Bug #1790 (Closed): saturate with zero ideals
- The following two bugs were also present in Singular......
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20:42 CoCoALib Feature #1559 (In Progress): Default ctor for rings
- I think Anna may be proposing to store in the cone object a @RingElem@ rather than a @ring@; you can always obtain th...
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16:58 CoCoALib Feature #1559: Default ctor for rings
- Anna Maria Bigatti wrote:
> By Winfried Bruns:
> But how can I store RingElem in the cone? They must belong to a po... -
16:49 CoCoALib Feature #1559: Default ctor for rings
- By Winfried Bruns:
I have forgotten the context, but the following is a scenario that has really come up. Normaliz... -
18:25 CoCoALib Feature #379 (Closed): Iter for subsets/tuples
- Tested in ex-Taylor(2). Smooth.
I also added and example (2-subsets in {0,1,2,3}) in @ex-combinatoric1.C@
12 Mar 2024
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20:39 CoCoALib Bug #1789 (In Progress): GradingMat with negative weights should complain (or deal with them properly!!)
- The documentation says that if the grading-dim is not specified then it is taken to be 0. Perhaps this is misleading...
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12:19 CoCoALib Bug #1789: GradingMat with negative weights should complain (or deal with them properly!!)
- I investigated and found the confusion: in the lines...
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08:23 CoCoALib Bug #1789 (Closed): GradingMat with negative weights should complain (or deal with them properly!!)
- ...
11 Mar 2024
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11:12 CoCoALib Slug #1049: GroebnerFan: slow examples
- ...
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10:48 CoCoALib Bug #1726: Dangling references to temporaries
- After discussing, we think my approach makes sense. So I must look at all messages in the patch.
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09:39 CoCoALib Slug #1057: Slug: Polynomial ring contructor slow with (big) matrix ordering
- John Abbott wrote:
> *Here is a benchmark* (since there was none given earlier:
Much better now with @IsZeroDet@.... -
07:56 CoCoA-5 Feature #1671: Refactor C++ impl in OnlineHelp
- John Abbott wrote:
> Currently @OnlineHelp.C@ uses CoCoALib for throwing error exceptions. It would be nice to make...
10 Mar 2024
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15:49 CoCoALib Design #1787 (In Progress): Iterator design: compatible with C++STL? Advancing beyond end?
- Here is a list of the iterators in CoCoALib:
* *@combinatorics.C@* SubsetIter, TupleIter
* *@SparsePoly@* Sparse...
08 Mar 2024
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20:48 CoCoALib Design #1511: Use C++14 constexpr
- I have done the tests and examples. There were a few cases where I chose to leave just *@const@* rather than replace...
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20:24 CoCoALib Design #1511 (Feedback): Use C++14 constexpr
- I think I have done all instances in @src/AlgebraicCore@ and @src/CoCoA-5@. I suppose I'd better check examples & te...
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18:22 CoCoALib Design #1750: IdealOfPoints: allow duplicate points?
- After on-line discussion... Anna suggests: (either-or)
* *(A)* make 2 fns: one which allows duplicate points, and ... -
18:09 CoCoALib Slug #1057: Slug: Polynomial ring contructor slow with (big) matrix ordering
- We now have a first impl of *@IsZeroDet@*. Hopefully this will help!
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18:00 CoCoALib Feature #1132: Canonical homomorphism for (some) polynomial rings?
- Another convenient homomorphism would be a "BringIn-like" homomorphism (keeping the names of the indets: e.g. x maps ...
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17:50 CoCoALib Slug #1394: Oddly slow GBasis computation (slow final cleanup)
- *AnnA* will look at this!
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17:45 CoCoALib Design #1085: Fns with "OUT" args: should they give ERR::MixedRings?
- Verbal discussion: do not give *@MixedRings@* error. So that the two code excerpts in comment 1 are equivalent.
JAA... -
17:34 CoCoALib Feature #379: Iter for subsets/tuples
- John Abbott wrote:
> *ANNA* have you tested this?
I need to find where I wanted to use them: search in examples ... -
17:20 CoCoALib Feature #202 (Closed): MatrixView/function for viewing a single row or column (RowMat, ColMat)
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09:11 CoCoALib Feature #202 (Feedback): MatrixView/function for viewing a single row or column (RowMat, ColMat)
- I found a good use in ex-IdealOfPoints1.C.
The comparison in readability between before and after is indeed quite st... -
09:04 CoCoALib Feature #202 (Resolved): MatrixView/function for viewing a single row or column (RowMat, ColMat)
- John Abbott wrote:
> I have just checked the code: it is in @MatrixView@ (as one would expect).
>
> I am not so h... -
17:17 CoCoALib Design #64 (Closed): submat takes only vector<long>
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17:13 CoCoALib Design #64: submat takes only vector<long>
- This issue, as described, was rejected by answer 2 (#64#note-2).
For the other questions mentioned here, we have fol... -
10:02 CoCoALib Design #64 (Resolved): submat takes only vector<long>
- I went through all the calls of submat in CoCoALib and indeed most of them are just the first rows.
We could have an... -
17:08 CoCoALib Bug #1749 (Feedback): Configuration hiccups on Mac M1
- Verified that CoCoA-5 also build OK on Mac M1.
--> feedback -
17:08 CoCoALib Feature #1788: New MatrixView/function "FirstRows/FirstCols"?
- After personal discussion, we agreed on new function (until we believe a new class would be considerably better)
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10:11 CoCoALib Feature #1788 (Closed): New MatrixView/function "FirstRows/FirstCols"?
- I went through all the calls of submat in CoCoALib (not so many) and indeed most of them just select the *first rows*...
-
14:34 CoCoALib Design #908 (Closed): Sum of ideals: what are the generators of (x) + (0)?
- Closing because duplicated into #1647
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08:29 CoCoALib Feature #1748: July 2023
- John Abbott wrote:
> Here is a list of topics we should look at:
> * fix configuration on Mac M1/M2
I think onl...
07 Mar 2024
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22:55 CoCoA-5 Feature #1671: Refactor C++ impl in OnlineHelp
- Currently @OnlineHelp.C@ uses CoCoALib for throwing error exceptions. It would be nice to make @@OnlineHelp.C@ indep...
-
21:39 CoCoALib Design #908: Sum of ideals: what are the generators of (x) + (0)?
- Fully resolved now? Close?
-
21:18 CoCoALib Bug #1726: Dangling references to temporaries
- Maybe I have understood what is upsetting the compiler.
The variable @P@ is a @ring&@, but @CoeffRing@ expects an ar... -
20:49 CoCoALib Design #1166 (Closed): C++11: allows large integer literals (in NumTheory-prime.C)
- Some time ago we adopted the C++14 standard. Sooner or later we shall jump to C++20 ???
The affected functions are ... -
20:35 CoCoALib Feature #1559: Default ctor for rings
- It is not completely clear to me what is desired. Winfried, can you clarify? Maybe give an example?
Were you able ... -
20:31 CoCoALib Design #1735 (Rejected): PushFront/PushBack without checks?
- Even the documentation mentioned about @myPushFront@ _etc_. I have slightly improved the doc.
Otherwise we can reje... -
20:20 CoCoALib Feature #1770 (Feedback): Evaluate polynomial function/class
- The new code is in *@SparsePolyOps-eval@*
The current impl is rather restricted: the polynomial has to be over @ZZ... -
20:10 CoCoALib Design #1753 (Closed): Clean up EulerTotient, InvTotient jungle in NumTheory-misc
- The header & source files look to be acceptably neat & tidy. So closing.
-
20:06 CoCoALib Design #1753: Clean up EulerTotient, InvTotient jungle in NumTheory-misc
- The relevant files are *@NumTheory-misc@*.
Tests are in *@test-NumTheory1,C@*. -
20:01 CoCoALib Feature #839 (In Progress): SparsePolyIter: make more compatible with STL
- In comment 5 above, the disadvantage that an iterator could be invalidated by a structure-changing operation to the p...
-
19:51 CoCoALib Design #1787: Iterator design: compatible with C++STL? Advancing beyond end?
- I think it would be nice to be able to use CoCoALib iterators with the "new" @for@ loop syntax. I note also that C++...
-
19:40 CoCoALib Design #1787 (In Progress): Iterator design: compatible with C++STL? Advancing beyond end?
- Two (unrelated) matters regarding iterators in CoCoALib:
# if we make them compatible with STL iterators then we can... -
19:26 CoCoALib Feature #379: Iter for subsets/tuples
- *ANNA* have you tested this?
01 Mar 2024
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18:40 CoCoALib Slug #1569 (Closed): IsInRadical too slow (test-RadicalMembership)
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18:38 CoCoALib Slug #1569: IsInRadical too slow (test-RadicalMembership)
- Anna Maria Bigatti wrote:
> Implement special version for monomial ideals
Moved to issue #1786 -
17:12 CoCoALib Slug #1569: IsInRadical too slow (test-RadicalMembership)
- Anna Maria Bigatti wrote:
> There is a slow test in test-RadicalMembership1 which is slower than the others and ver... -
09:44 CoCoALib Slug #1569: IsInRadical too slow (test-RadicalMembership)
- There is a slow test in test-RadicalMembership1 which is slower than the others and very slow with debugging on (20m...
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18:37 CoCoALib Feature #1786 (New): Add new function for IsInRadical for monomial ideals? (RadicalMembership)
- A monomial version could be quite a bit faster than the general code.
But is this really needed?
Consider calling @... -
14:57 CoCoALib Slug #1739 (Closed): IsHomog for ideals
-
14:48 CoCoALib Slug #1739: IsHomog for ideals
- John Abbott wrote:
> Could it be useful to have also *@IsHomog3(I)@* which returns a @bool3@?
it could be handy t... -
14:37 CoCoALib Slug #1739: IsHomog for ideals
- Anna Maria Bigatti wrote:
> check if there is a "homog" flag to be set
The answer is "no" (#1784). -
14:53 CoCoALib Feature #1785: Add function IsHomog3(I)?
- See implementation of @IsHomog(I)@ in @SparsePolyOps-ideal.C@ (and #1739)
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14:51 CoCoALib Feature #1785 (New): Add function IsHomog3(I)?
- Should we have a "quick" bool3 function (i.e. might return @uncertain@) saying if an ideal is homogeneous?
Useful? -
14:36 CoCoALib Feature #1784 (New): Add flag IhaveHomogGensValue for ideals in SparsePolyRing?
- We already have...
-
09:44 CoCoALib Support #1782: Make CoCoALib test file for radical
- Can we (= Anna) do this quickly ready for next interim release?
29 Feb 2024
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15:33 CoCoALib Bug #1749 (Resolved): Configuration hiccups on Mac M1
- CoCoALib now seems to compile without too many hiccups... Will check in shortly.
Not yet tried CoCoA-5
28 Feb 2024
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21:32 CoCoALib Bug #1749: Configuration hiccups on Mac M1
- Aha! The examples with @wrong output@ are *all examples* which are expected to produce output.
There are two like... -
20:36 CoCoALib Bug #1749 (In Progress): Configuration hiccups on Mac M1
- I have now changed all messages in the checking scripts so that they specify the full path when referring to @LogFile...
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19:59 CoCoALib Bug #1749: Configuration hiccups on Mac M1
- I'm hoping to sort this out soon... ideally by tomorrow (ha ha!). It seems I've forgotten username/password (sigh). ...
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21:27 CoCoA-5 Support #915: When is a semicolon needed to end a statement/command?
- It'd be nice if there were a clean answer to this question, but it is also quite unimportant.
I don't recall ever ha... -
21:24 CoCoA-5 Bug #611: GUI: qutting provokes Imminent Disaster
- A possibly related curiosity is that when one exits the GUI by typing in *@ciao;@* it is necessary to dismiss a smal...
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21:21 CoCoA-5 Bug #611: GUI: qutting provokes Imminent Disaster
- I have added Uli as a watcher in case he happens to have an idea how to resolve this... he seems to be a Qt magician ...
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21:18 CoCoA-5 Bug #611: GUI: qutting provokes Imminent Disaster
- The problem persists, but the error message is less alarming now:...
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21:20 CoCoA-5 Bug #612 (Closed): The C5 gui does not exit properly when using the exit menu entry
- This is apparently a duplicate of #611, so I shall close this issue.
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