Activity
From 08 Feb 2024 to 08 Mar 2024
08 Mar 2024
-
20:48 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...
-
- I think I have done all instances in @src/AlgebraicCore@ and @src/CoCoA-5@. I suppose I'd better check examples & te...
-
- After on-line discussion... Anna suggests: (either-or)
* *(A)* make 2 fns: one which allows duplicate points, and ... -
- We now have a first impl of *@IsZeroDet@*. Hopefully this will help!
-
18:00 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 ...
-
- *AnnA* will look at this!
-
- Verbal discussion: do not give *@MixedRings@* error. So that the two code excerpts in comment 1 are equivalent.
JAA... -
- John Abbott wrote:
> *ANNA* have you tested this?
I need to find where I wanted to use them: search in examples ... -
-
- I found a good use in ex-IdealOfPoints1.C.
The comparison in readability between before and after is indeed quite st... -
- John Abbott wrote:
> I have just checked the code: it is in @MatrixView@ (as one would expect).
>
> I am not so h... -
-
- This issue, as described, was rejected by answer 2 (#64#note-2).
For the other questions mentioned here, we have fol... -
- I went through all the calls of submat in CoCoALib and indeed most of them are just the first rows.
We could have an... -
- Verified that CoCoA-5 also build OK on Mac M1.
--> feedback -
- After personal discussion, we agreed on new function (until we believe a new class would be considerably better)
-
- I went through all the calls of submat in CoCoALib (not so many) and indeed most of them just select the *first rows*...
-
- Closing because duplicated into #1647
-
- 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
-
- Fully resolved now? Close?
-
- Maybe I have understood what is upsetting the compiler.
The variable @P@ is a @ring&@, but @CoeffRing@ expects an ar... -
- Some time ago we adopted the C++14 standard. Sooner or later we shall jump to C++20 ???
The affected functions are ... -
- It is not completely clear to me what is desired. Winfried, can you clarify? Maybe give an example?
Were you able ... -
- Even the documentation mentioned about @myPushFront@ _etc_. I have slightly improved the doc.
Otherwise we can reje... -
- The new code is in *@SparsePolyOps-eval@*
The current impl is rather restricted: the polynomial has to be over @ZZ... -
- The header & source files look to be acceptably neat & tidy. So closing.
-
- The relevant files are *@NumTheory-misc@*.
Tests are in *@test-NumTheory1,C@*. -
- In comment 5 above, the disadvantage that an iterator could be invalidated by a structure-changing operation to the p...
-
- I think it would be nice to be able to use CoCoALib iterators with the "new" @for@ loop syntax. I note also that C++...
-
- Two (unrelated) matters regarding iterators in CoCoALib:
# if we make them compatible with STL iterators then we can... -
- *ANNA* have you tested this?
01 Mar 2024
-
-
- Anna Maria Bigatti wrote:
> Implement special version for monomial ideals
Moved to issue #1786 -
- Anna Maria Bigatti wrote:
> There is a slow test in test-RadicalMembership1 which is slower than the others and ver... -
- There is a slow test in test-RadicalMembership1 which is slower than the others and very slow with debugging on (20m...
-
- A monomial version could be quite a bit faster than the general code.
But is this really needed?
Consider calling @... -
-
- John Abbott wrote:
> Could it be useful to have also *@IsHomog3(I)@* which returns a @bool3@?
it could be handy t... -
- Anna Maria Bigatti wrote:
> check if there is a "homog" flag to be set
The answer is "no" (#1784). -
- See implementation of @IsHomog(I)@ in @SparsePolyOps-ideal.C@ (and #1739)
-
- Should we have a "quick" bool3 function (i.e. might return @uncertain@) saying if an ideal is homogeneous?
Useful? -
- We already have...
-
- Can we (= Anna) do this quickly ready for next interim release?
29 Feb 2024
-
- CoCoALib now seems to compile without too many hiccups... Will check in shortly.
Not yet tried CoCoA-5
28 Feb 2024
-
- Aha! The examples with @wrong output@ are *all examples* which are expected to produce output.
There are two like... -
- I have now changed all messages in the checking scripts so that they specify the full path when referring to @LogFile...
-
- I'm hoping to sort this out soon... ideally by tomorrow (ha ha!). It seems I've forgotten username/password (sigh). ...
24 Feb 2024
-
- A brief phone discussion with Anna yesterday suggested a vague preference for many-small-files.
But no genuine reaso... -
- Thoughts about one-big-file vs many-small-files:
For source code:
* ASSUME many-small-files means many header fil... -
- I'd like to discuss briefly the pros & cons of many-small-files and one-big-file. Currently the CoCoALib code is a m...
23 Feb 2024
-
- Anna Maria Bigatti wrote:
> Still to do: check other cases.
I cannot remember what I meant.
Now seems pretty goo... -
- Implement special version for monomial ideals
-
- Anna Maria Bigatti wrote:
> there is a new problem (in test-exbugs.C).
> [...]
Fixed, it was an "off-by-one" err... -
- there is a new problem (in test-exbugs.C)....
-
-
- I made a new issue for implementing and running the tests.
Closing this one ... hoping non errors will come from the... -
- *ANNA* will test this over the next week :-)
-
- There is a file with some CoCoALib tests for radical in a funny format.
Clean it up. -
-
19 Feb 2024
-
- Winfried sent me the following message by email:...
16 Feb 2024
-
- Assuming we do implement this, what should its UI be?
Do we already have a function which converts from @SparsePolyR... -
- I have just tried disabling the checks inside *@PushFront@* and *@PushBack@*. There was no difference when calling @...
-
- Surely worth a try.
@PushFront_nocheck@?
I could imagine cases when this might be used (homomorphisms preserving or... -
- As I stated in the comment just above: I should test whether a non-checking impl would really make it faster. Maybe ...
-
21:05 Bug #1661 (In Progress): Microsoft: cannot compile with signal handling
- Ah, thanks for making me aware of this issue. Actually, recently I put my instructions online for exactly that.
I ha... -
- I have added Nico Mexis as a watcher. He has successfully built CoCoA-5 for Microsoft, so may have some useful insig...
-
- Here are some posibly useful links: (I searched for *@libtool tutorial@*
* @https://stackoverflow.com/questions/446... -
- I have confirmed that Anna's 0-dim check makes it much faster. I have added a link to issue #1103 which is about pse...
-
- John Abbott wrote:
> As far as I can see *@MinPowerInIdeal@* is already implemented, using the method Anna described... -
- I have made a first impl. Anna is sceptical, partly because the code behaves differently depending on the coefficien...
-
- The source code seems to be in *@SparsePolyOps-vector.C@* around line 32.
-
- John Abbott wrote:
> Would we also want to have @interreduced@ work when the coeff ring is @ZZ@?
Not until someon... -
- Would we also want to have @interreduced@ work when the coeff ring is @ZZ@?
If so, we need to think about the semant... -
- In 8 years we have never really needed the proposed new API, so we may as well *reject* this issue (as Anna suggested...
-
- The syntax should be compatible with whatever we use for @ElimMat@, I presume.
Well, there is an important differenc... -
- No longer needed because @ideal(zero(R))@ now gives ideal in R with no generators.
-
- check if there is a "homog" flag to be set
-
- We have auto mapping in many places without any real problems.
If the user disables auto mapping then this may cause... -
- Try...
-
- While it can be difficult to say much positive about Julia, it does offer a convenient way of using "iterators" (and ...
-
- There are a few functions whose name has a suffix like *@_NoArgChecks@*.
OK, a quick grep produces just one such pub... -
- Here is a list of features it would be nice to offer in the CoCoALib documentation:
* cross-references (xrefs)
* sm... -
- What is the status of this issue? How much did we achieve?
15 Feb 2024
-
- As far as I can see *@MinPowerInIdeal@* is already implemented, using the method Anna described above.
See near line... -
- John Abbott wrote:
> The "stupid approach" gets the answer in 10s (on my Linux laptop).
Even faster like this.
<... -
- Fixed the sum I + ideal(1)
Added check also for I + ideal(x, x-1) (when ideal @HasGBasis@)...
09 Feb 2024
-
- John Abbott wrote:
> After brief consideration, I have decided to keep in this issue discussion related to what "cle... -
- I remind you of the function *@IsConstant@* which should be helpful in this case (if IsField(CoeffRing)).
-
- John Abbott wrote:
> Here is an example where the resulting gens could clearly be cleaned up:
> [...]
This is st... -
- OK to require that input to *@syz@* are all non-zero.
Also OK for a new fn which accepts zero -- not sure how this s... -
- Should we make @SyzOfGens@ obsolescent? does it do anything more than calling @syz(gens(I))@?
(apart from fixing th... -
- This is my suggestion: implement a new function @syz0@ which allows 0s in the input (giving them conventional weights...
-
- Currently we have decided to forbid generator 0 in ideals (#1647), so @SyzOfGens@ will never find a 0, keeping in min...
08 Feb 2024
-
- I have implemented @homogenizer@ in OSCAR, and am happy with the interface it gives. Also some others are using it, ...
-
- What is the status of this issue? With luck we can soon close it!
-
-
- I have now added a first impl of *@TupleIter@* following the idea behind @SubsetIter@, _i.e._ the tuples are from the...
Also available in: Atom