Activity
From 20 Dec 2019 to 18 Jan 2020
18 Jan 2020
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20:05 Feature #202: MatrixView/function for viewing a single row or column (RowMat, ColMat)
- Should the "get-row" or "get-col" function make a copy or just refer to the original matrix?
Making a copy could b... -
- We could even use the names *@row@* and *@col@*, so sample uses would be ...
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- We should make a few tests to see what actually happens with the current scripts.
While it should be harmless to a...
17 Jan 2020
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- I think the current impl is acceptable; so moving to _feedback_. Doc seems OK too.
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- To release source code we should do the following:
# generate TARGZ file (maybe also TAR.XZ which is usually smalle... -
- Original request came from Winfried Bruns (via email on 2020-01-17).
The purpose of the SHA-256 checksum is to pro... -
- Winfried Bruns requests that we make available also an SHA-256 checksum for code that we distribute.
This seems to...
15 Jan 2020
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- The following computation seems to spend more time in "clean up" than elsewhere; is this reasonable?...
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- It is probably best to regard this as resolved, and just test it as is.
Perhaps it is not perfect, but I think the c...
14 Jan 2020
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- I have just repeated the steps described in comment 4, and this time it worked as hoped.
I have a *doubt*: in the ...
13 Jan 2020
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20:49 Feature #357: Constructor for vectors? CoCoAVector
- John Abbott wrote:
> Recalling part of my comment 13:
> One aspect we could implement, which C++ does not, is the n... -
- Recalling part of my comment 13:
One aspect we could implement, which C++ does not, is the notion of "list of elems ... -
- Re-reading the comments I think it's not worth it.
I went through all the code and removed all calls to @CoCoAVect... -
- OK, I think we should not make a function in lib.
I added an example in ex-c++.C.
Now I realized that there is a ... -
- This works fine now, but only for few orderings.
The general case will not be done for this release. Postponing. -
- No hope to make this in time for 0.99720 (requires too much planning)
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- Example: so I know where to find one ;-)...
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- The real solution is using @RingElems@, this new function is actually quite useful for other things too, and also in ...
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- We could have a @RingElemList@ in CoCoA-5.
I have defined a function in @NotBuiltin.cpkg5@. About to check it in.
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- Could it make sense to have a "variant" fn which accepts @[@ and @]@?
Maybe @RingElemVec@ or @RingElemList@?
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- It is compatible with @NewPolyRing(QQ, "x,y,z")@.
I prefer not to add the brackets because then we have to make th... -
- Thanks for the explanation. Now I will remember why.
12 Jan 2020
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- JAA thinks this proposal should be *REJECTED* because it is unsafe.
The crucial point is that if the data fields @...
10 Jan 2020
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- I was a little surprised that @RingElems(P, "[x,y]")@ produced a run-time error.
Would it make sense to allow an i... -
- I have checked and this has not yet been done completely.
It seems that the easy solution is to use the *@trap@* fac... -
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- Should there also be more tests where the result is @false@? Probably little point. I could add a couple of really ...
09 Jan 2020
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- I now disagree with my comment 3 (above), and think that it is (usually) best to create the @SignalWatcher@ just afte...
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- I think I sent my file (*@FIX_PERMS.sh@*) to Anna via email; and I believe she said it worked mostly OK for her.
She... -
- These fns were already mentioned in the previous release (0.99650).
Closing after spending 3 months in _feedback_. -
- Last comment was 8 months ago. The code is there (presumably added then); it is documented.
A comment says there ar... -
- A quick search with @fgrep@ shows that all error mesgs are printed out on @/dev/stderr@
No doubt another check will ... -
- On my main machine @gmp-find.sh@ (with SSD) takes less than 1s; on the little "netbook" it took about 2.8s.
Faster m... -
- I think I have found out what the problem is: in some (all?) @Makefile@ the dependencies file has a declared dependen...
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- Here is what happened (I think):
* changed version number (CoCoALib and CoCoA-5)
* configure again
* start to buil... -
- This is a bit tricky.
As far as I can see, @make veryclean@ deletes @include/CoCoA/PREPROCESSOR_DEFNS.H@, but then... -
- I have a prototype which seems to work.
It is very simple: accepts a matrix, and returns a matrix. No smarts inside... -
- I think the clue is in the line above about @MemPool@.
In the dtor for the ring the fields are destroyed in revers... -
- every concrete ring have these lines (in .C file)...
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- Postponing because this is not essential for the next release, and choosing _status quo_ seems to be harmless while a...
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- Is there any disadvantage to creating a @SignalWatcher@ always?
I think it incurs essentially no run-time cost.
A... -
- Should the @GlobalManager@ have the ability to create a @SignalWatcher@?
If so, should the default be to create a @S... -
- I think that the _documentation_ for the @configure@ script is clear enough now; so am moving this issue to _feedback...
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- It is not quite as simple as I wrote in the previous comment.
The option *@--with-boost=@* will automatically caus... -
- There is the configiration option *@--no-boost@* which automatically inhibits building CoCoA-5 (well, it is supposed ...
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- I think that this has been done now... I suppose someone should check properly. :-/
08 Jan 2020
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- Here is a test case:...
07 Jan 2020
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- I think the question was intended as: "can we let the user define an ideal over ZZ[x[1..n]]?"
Now it gives an error:... -
- JAA moved this to @CoCoALib@.
I think this will not be possible before the CoCoA School in early March (or, at lea...
06 Jan 2020
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06:46 Feature #1381 (In Progress): Type ideal for ZZ[x[1..n]]
- Is it possible to add the type ideal for the ring ZZ[x[1..n]]?
28 Dec 2019
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- I have added two new tests to *@CoCoA-5/tests/exbugs.cocoa5@* for this issue.
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- Anna revised the code for *@GBasisByHomog@* (so that the resulting basis is interreduced).
Anna made a new version... -
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- I have made a new version of @IamZeroDim@ which works with any GB -- no longer needs a minGB.
All tests pass. Check...
27 Dec 2019
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- checked-in. Made new pre-release for Mac.
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- The trick didn't work ... they usually don't.
Fixed interreduction -
- I had implemented a _trick_ which I believed would be enough for interreducing (compute the GB twice).
But it is not... -
- I have written a first impl; with this impl, the problem case in issue #1379 works (well, it does not give NYI).
I... -
- Currently *@IsZeroDim@* and the impl via *@IamZeroDim@* require the original ideal to have a minimal GB.
However, ... -
- I'd like the @IamZeroDim@ impl to be more robust; _i.e._ it should work with any GB not just a minGB.
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- John Abbott wrote:
> Here is an example where @GBasisByHomog@ returns a non-minGB
> [...]
ahhhh!! clue city!!
t... -
- John Abbott wrote:
> I have put a print command in the loop inside @IamZeroDim@ around line 530 in @SparsePolyOps-id... -
- Here is an example where @GBasisByHomog@ returns a non-minGB...
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- With GDB, the problem seems to be from a call to @IsPrimary@ on line 735 of @SparsePolyOps-ideal-ZeroDim.C@ inside fn...
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- I have put a print command in the loop inside @IamZeroDim@ around line 530 in @SparsePolyOps-ideal.C@.
It reports ... -
- What is the comment on line 528 about?
What happens if the GB is not a RGB? 8-O
Or is that impossible?
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- JAA and Anna have confirmed the bug (with current CVS version).
The problem seems to be that the ideal is not recogn... -
- Robbiano reports (via email) that CoCoA incorrectly produces "error NYI" with the following input...
21 Dec 2019
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- John Abbott wrote:
> I have just spent quite a while trying to work out where I could insert a time-out check inside... -
- I have just spent quite a while trying to work out where I could insert a time-out check inside the reduction code.
...
20 Dec 2019
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- Proposal: create two functions for computing radicals
* *@radical@* which also tries hard to compute a GB for the r... -
- I propose doing an experiment along the following lines.
We create a collection of test ideals (perhaps as many a... -
- I have checked in the code (even though it is not quite finished yet). It worked tolerably well in my two tests.
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- I have an improved impl, which I hope to check in fairly soon (later today?).
A problem with the description in co... -
- The main problem with checking for timeout during GB computation is that the times for each single reduction can vary...
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