Activity
From 28 Apr 2017 to 27 May 2017
23 May 2017
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11:32 Slug #1049: GroebnerFan: slow examples
- Having 4 indets makes it easy to find "big" examples:...
22 May 2017
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14:45 Feature #813 (In Progress): Implement "elim" in CoCoALib
- John Abbott wrote:
> I do not understand: "closed" but progress is 10%.
> Also your last comment suggests that ther... -
- I do not understand: "closed" but progress is 10%.
Also your last comment suggests that there is still some design i... -
- There is @myElim@. Maybe I meant making a _function_?
Easy, anyway.
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- While preparing an example of a simple ideal with a big "universal denominator" I encountered a number with about 330...
19 May 2017
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- ...
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- I just removed the coefficients to John's last example:...
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- Just to clarify: this means that one cannot create this ring, hmmmmm.......
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- Here is another "slightly smaller" matrix whose determinant is zero mod 32749:...
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- Here is another example which gives trouble:...
18 May 2017
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- Here are some order matrices with not-too-big entries whose det is a multiple of 32749:...
17 May 2017
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- ...
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- First problem found: @NewOrdvArith(ord)@ ic computed twice.
If @ord@ is defined by M, then many checks are done on M. -
- John Abbott wrote:
> Another approach would be to persuade GFan to produce matrices with smaller entries... this is ... -
- Another approach would be to persuade GFan to produce matrices with smaller entries... this is probably not so easy!
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- The correct solution would be to have a proper implementation of matrix orderings without any "tricks" (too bad if it...
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- John Abbott wrote:
> Here is a guess as to what the problem is... for matrix orderings there was some "funny trick" ... -
- Here is a guess as to what the problem is... for matrix orderings there was some "funny trick" using a matrix reduced...
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- Another smaller example (but not as small as Anna's)...
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- Smaller example, but still too big...
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- The following causes an error:...
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- I just implemented a workaround:
I check det(M) before calling @RemoveRedundantRows@, if not 0 return M.
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- The function @RemoveRedundantRows@ is quite slow because of the repeated calls to @rk@.
I had thought it was not imp... -
- Now I'm more inclined to keep @MakeTermOrd@ for CoCoA-5.
Possibly make a distinction in CoCoALib (where mat and ord ...
15 May 2017
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- Here are two deg 5 binomial examples:...
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- Here are some binomial examples of deg 4:...
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- Changed the code so that ugly primes are detected cleanly from checking divisibility, instead of using try/catch. Ad...
12 May 2017
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- cleaned up, looks good
http://cocoa.dima.unige.it/cocoalib/doc/CoCoATranslationTable.html
We still have to decide... -
- testing and sorting
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- Elisa Palezzato added the missing entries in the table (thanks!)
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- Originally the translation table was done because there was no cocoa-5 manual, and to show what we had ported from co...
11 May 2017
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- I am a bit uneasy about using the following paradigm more than absolutely necessary:...
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- Completed similar checks for implicit as well.
Cleaned up, added tests for implicit.
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- Added the error @ERR::CannotReconstruct@ and cleaned up the code accordingly (also for similar try/catch code in @Imp...
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- fixed, cvs-ed
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- I have some trouble writing a bit of code because I cannot redefine an ideal in another ring.
Should we allow that, ... -
- Just a trivial task (but may be annoying).
Currently in @error.H@ we comment an error name with its string: isn't th... -
- I managed to write my loop changing rings cleanly (modular computation).
While changing characteristic I forcily had... -
- This would be convenient, but also potentially dangerous:
In the case of @RingElem@ the empty constructor gives 0 ... -
- I have some trouble writing a bit of code because I cannot redefine an ideal in another ring (changing characteristic...
10 May 2017
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- The following fails for me:...
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- and add test!
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- https://cocoa.dima.unige.it/redmine/issues/1062#note-6
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- The (rare) error thrown by @apply@ for an ugly prime in MinPolyModular was not caught.
I fixed one, but look around ...
09 May 2017
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- Found it (I had been confused by another unexpected error).
Easy: BTW I changed name to the error... -
- I had some trouble deciding *how* to catch an error:
I was expecting a possible problem in applying a partial hom, a... -
- Decide how to catch and expected error, for example a "Cannot reconstruct rational"
08 May 2017
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- published manual on ResearchGate
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- updated web page
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- I see now that this was not done for the release.
Postpone to next.
05 May 2017
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- Maybe we could add the ring anyway when we do @indent(I)@
JAA simultaneously wrote the following:
Anna suggested ... -
- I am not (yet?) convinced that this is the right thing to do, partly because I think it could easily make it (even) h...
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- Printing out an ideal gives no indication of the ring: @ideal(...)@.
For matrices we now write @matrix(/* ring descr...
04 May 2017
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- pdf documentation has date, but no version number.
html and examples have no sign of either.
Fix it. -
- uploaded release, manual and examples
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- (The example is cvs-ed in the dir IdealsModp)
I had added a ludicrous number of (unused) indeterminates: the computa... -
- I have an example which shows that creating a SparsePolyRing with matrix ordering is slower than default ordering.
02 May 2017
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- Task (6): convert a ringelem to an integer or rational should be fairly easy via *@ConvertTo@*:
here is a simplistic...
29 Apr 2017
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- Still missing: copy flags.
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28 Apr 2017
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- While it may not be strictly correct to do it this way, I am closing this issue. We can proceed with the current imp...
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- Everything related to making a CoCoALib release:
# Redmine Roadmap: close or postpone issue
# Redmine Release iss... -
- Since Winfried does not recall anything about this issue, I think we can regard it as having been resolved at some po...
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14:54 Bug #228: libcocoa sometimes built without its index
- I have completely forgotten what the problem was. I don't think it is relevant anymore.
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- We should ask Winfried if this problem has arisen lately. I have never seen anything like it, and I suspect that Win...
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- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- Checked: interreduction does not depend on commutativity.
Cleaned up. Closing
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- John Abbott wrote:
> @NewLexOrdering(N)@ or @lex(N)@.
> I wonder whether we should simply eliminate the fn @NewLe... -
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- An issue I stumbled on recently is 3) from my wish list. I think it is not yet implemented. Suppose I produce a polyn...
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- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This has been in feedback for ages (more than 2 years). I have tested on various different Linus platforms, and Anna...
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- I think this is well tested now.
This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and... -
- We should talk to the Normaliz people again to see what they think of @cmake@ after some time using it. I thought I ...
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- If I recall well someone (ICMS Seoul) suggested us to keep our handwritten configure.
This issue was under "CoCoA"... -
- Oh, I am of the opposite opinion.
Whatever solution we adopt, it should be as easy as possible to configure and bu... -
- I'd rather not.
First of all, it works as it is.
Secondly, CoCoALib and CoCoA-5 are strictly related: nice to keep ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- This issue was under "CoCoA" instead of "CoCoALib".
I'm recovering these old and forgotten issues, so we reconsider ... -
- I would like to make a page like this: (contributions to emacs)
[[http://gnu.huihoo.org/emacs/24.4/emacs-editor/Ackn... -
- I'm slowly doing it:
we have contacted most contributors and obtained their permission.
Some have also sent the sig...
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