CoCoA

16 Jun 2015

08:25 CoCoALib Feature #665: Integrate Janet/Pommaret basis code

At the moment the UIBC uses only the standard algorithm to compute a Janet basis @TQBlockLow@. But it should be possi... Mario Albert

12 Jun 2015

12:03 CoCoALib Feature #664: Impl small non-prime finite fields (using logs)

Now I have a (partly?) working CoCoALib ring which wraps my previous code.
John Abbott

11 Jun 2015

20:06 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

As I am sitting in a delayed train with too much time at hand, some further comments:
1.) The "book" by Levandovsk... Werner M Seiler

15:27 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

Going to a seminar here about G-bases in PBW algebras :-)
*NOTE* the seminar was OK. The student pointed out that (... John Abbott

11:43 CoCoALib Feature #728 (In Progress): Noncommutative algebra "of solvable type"

Yes, we should get the old @RingWeyl@ code working again -- my guess is that there is little to do.
We should find... John Abbott

11:30 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

We have already done most of these considerations for RingWeyl (except for the coefficient rule).
.. and we also had... Anna Maria Bigatti

11:14 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

Werner pointed out that a simplistic implementation is likely to be terribly slow (though perhaps "obviously correct"... John Abbott

19:00 CoCoALib Feature #735 (Resolved): Convert a PPMonoidElem to RingElem with coefficient one

done, checked in.
So far I modified only the files in AlgebraicCore Anna Maria Bigatti

11:46 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

OK, do it! Including @monomial(P,expv)@.
Don't forget documentation, examples and tests!
John Abbott

11:24 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

My preference (by far) goes to @monomial(P, pp)@
I have already implemented and all tests pass.
Should I also do @m... Anna Maria Bigatti

11:04 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

I point out that assignment to @RingElem@ can perform some type changes. Should we allow assignment to a @RingElem@ ... John Abbott

11:00 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

I do agree that, without familiarity with the function, upon reading @monomial(P,1,pp)@ my first thought would be "Wh... John Abbott

10:46 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

I didn't know that @monomial(P, 1, pp)@ works as expected.
But I think for the _normal_ user who wants to use a @PP... Mario Albert

10:41 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

I am a little uncertain about the proposal. @monomial(P,pp)@ gains little over @monomial(P,1,pp)@.
Is it worth cr... John Abbott

08:56 CoCoALib Feature #735: Convert a PPMonoidElem to RingElem with coefficient one

Should we do the same for @monomial(P, expv)@?
I cannot see any ambiguity.
*REPLY* (JAA) if we have @monomial(P,PP)@... Anna Maria Bigatti

08:41 CoCoALib Feature #735 (In Progress): Convert a PPMonoidElem to RingElem with coefficient one

That seems very reasonable: I had a look at the code and, indeed, most of the times @monomial@ is called the coeffici... Anna Maria Bigatti

08:31 CoCoALib Feature #735 (Closed): Convert a PPMonoidElem to RingElem with coefficient one

Let @pp@ be a @PPMonoidElem@ of the @PPMonoid@ @PPM@. Let @P@ be a @SparsePolyRing@ with @PPM@ as @PPMonoid@.
Severa... Mario Albert

15:26 CoCoALib Feature #664 (In Progress): Impl small non-prime finite fields (using logs)

JAA has implemented a first prototype (following the model @RingFpImpl@ and @SmallFpImpl@). The computational part u... John Abbott

14:58 CoCoALib Feature #386: add resolution data type

Hans says that singular uses more or less the design we are considering; apparently in some cases they store two reso... John Abbott

11:57 CoCoALib Feature #386: add resolution data type

One possibility might be to have a "module view" much like @MatrixView@, but I'm far from certain whether such a thin... John Abbott

11:43 CoCoALib Feature #386: add resolution data type

> Since the C++ types of the input are different it seems simplest to have different classes for each case. Each cla... Anna Maria Bigatti

08:28 CoCoA-5 Feature #732 (Feedback): Primary Decomposition in CoCoA-5: port Luis Garcia's package(cocoa-4)

mostly done (with some more cleaning and testing to do) Anna Maria Bigatti

08:25 CoCoA-5 Feature #732 (Closed): Primary Decomposition in CoCoA-5: port Luis Garcia's package(cocoa-4)

Luis Garcia wrote a package for CoCoA-4. Port it to CoCoA-5. Anna Maria Bigatti

08:27 CoCoA-5 Feature #734 (Closed): Primary Decomposition in CoCoA-5: zero dimensional, zero characteristic

Anna Maria Bigatti

08:26 CoCoA-5 Feature #733 (Closed): Primary Decomposition in CoCoA-5.1.2: zero dimensional, finite characteristic

First prototype Anna Maria Bigatti

08:24 CoCoALib Feature #665: Integrate Janet/Pommaret basis code

In the following I try to explain how I integrated the JBMill/PBMill into @SparsePolyRing::IdealImpl@:
h3. UIBC
... Mario Albert

08:23 CoCoA-5 Feature #731 (In Progress): Primary Decomposition in CoCoA-5

Implement Primary Decomposition in CoCoA-5 Anna Maria Bigatti

10 Jun 2015

17:12 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

For starters Ore algebra as a simple case of polynomial algebras of solvable type should be enough. Their main advant... Werner M Seiler

12:55 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

I made a slight mistake in the original description. It should have been:
* @x[i]*x[j] = q*x[j]*x[i] + tail@ where @... John Abbott

14:24 CoCoALib Slug #725: Example database: Slow ideal equality test

John Abbott wrote:
> In the specific example of this issue there are 36 indets (all used), 15 polynomials, and @dim(... Anna Maria Bigatti

14:22 CoCoA-5 Bug #148: C-c C-p in emacs goes to wrong line

> *REPLY (JAA)* I think what confused me was that in the CoCoA-5 output window the cursor was at the end of the outpu... Anna Maria Bigatti

13:41 CoCoALib Feature #386 (In Progress): add resolution data type

Mario and I have discussed some possible designs; neither of us has much experience with resolutions, so it is possib... John Abbott

13:19 CoCoALib Feature #729 (In Progress): Betti numbers, betti diagram

Mario suggested that the internal representation should be @vector< map<degree, long> >@.
The resolution is a list... John Abbott

11:30 CoCoALib Feature #730: Stats in GBMill (GReductor)

I suppose Mario ought to write about this. He has followed my design suggestion, and seems to be happy with it. If ... John Abbott

11:24 CoCoALib Feature #730: Stats in GBMill (GReductor)

Mario asked about gathering stats for his involutive basis code.
I suggested using a @struct@ to keep all the stats ... John Abbott

11:18 CoCoALib Feature #730 (Closed): Stats in GBMill (GReductor)

There is already some implementation for gathering stats in G-basis computation.
Review it!
Perhaps separate st... John Abbott

08 Jun 2015

22:27 CoCoALib Feature #728: Noncommutative algebra "of solvable type"

Sounds like a generalisation of RingWeyl.
... Werner, are you willing to test it out? ;-)
I was thinking of porti... Anna Maria Bigatti

18:45 CoCoALib Feature #728 (In Progress): Noncommutative algebra "of solvable type"

Werner asked about the possibility of having non-commutative algebras of solvable type. They are nice enough that Bu... John Abbott

18:52 CoCoALib Feature #729: Betti numbers, betti diagram

Mario points out that for a non-graded case we will also need a datastructure.
*UPDATE* (20150608) Mario thinks it is... John Abbott

18:50 CoCoALib Feature #729 (In Progress): Betti numbers, betti diagram

Design a good data structure for storing Betti numbers (also for multigraded case).
John Abbott

11:46 CoCoA-5 Bug #148: C-c C-p in emacs goes to wrong line

John Abbott wrote:
> I recently tried using @C-c C-p@ and found it unhelpful; so I "stupidly" tried it a second time,... Anna Maria Bigatti

11:09 CoCoALib Feature #718: Insert calls to CheckForInterrupt

Mario asked about the possible run-time cost of calling @CheckForInterrupt@.
Currently it may be needlessly expensiv... John Abbott

07 Jun 2015

12:46 CoCoALib Slug #725: Example database: Slow ideal equality test

In the specific example of this issue there are 36 indets (all used), 15 polynomials, and @dim(P/I)@ gives 21. Isn't... John Abbott

06 Jun 2015

23:04 CoCoA-5 Bug #148: C-c C-p in emacs goes to wrong line

I recently tried using @C-c C-p@ and found it unhelpful; so I "stupidly" tried it a second time, and found that it wa... John Abbott

22:58 CoCoA-5 Bug #727 (In Progress): Emacs UI: send-file (C-c C-f) should check if buffer and file are synchronized

The emacs command @C-c C-f@ send a @source@ command to CoCoA-5, so CoCoA-5 reads the file on disk which may not be th... John Abbott

22:49 CoCoALib Slug #725: Example database: Slow ideal equality test

For completeness here is the list of generators in @QQ[x[1..6,1..6]]@ ... John Abbott

22:46 CoCoALib Slug #725: Example database: Slow ideal equality test

Anna, you are right (in principle). In practice, I think almost the whole time is spent computing a G-basis (rather ... John Abbott

21:17 CoCoALib Slug #725: Example database: Slow ideal equality test

Instead of checking equality you should just check whether g_j is in the ideal generated by the others. However, thi... Anna Maria Bigatti

20:32 CoCoALib Slug #725: Example database: Slow ideal equality test

It has finally finished:... John Abbott

14:25 CoCoALib Slug #725: Example database: Slow ideal equality test

Progress...... John Abbott

13:19 CoCoALib Slug #725: Example database: Slow ideal equality test

Re-running the program (over @QQ@) I get the following output (still incomplete):... John Abbott

13:14 CoCoALib Slug #725 (New): Example database: Slow ideal equality test

This is probably not important, but I wanted to record this example which seems to be unexpectedly slow -- it might b... John Abbott

22:39 CoCoA-5 Bug #726: TopLevel cannot "import" a package variable

I think a "global variable" is a reasonable design for this task.
There is a "philosophical" question: is a qualif... John Abbott

22:34 CoCoA-5 Bug #726 (Closed): TopLevel cannot "import" a package variable

I would like to have a user controllable "verbosity level" in a package. How should this be done?
I had thought o... John Abbott

02 Jun 2015

22:43 CoCoA-5 Bug #724 (In Progress): RationalSolve: wrongly complains about non zero-dim even in finite char

It is not quite as easy as I had hoped. Every so often zero polynomials pop up in awkward places (_e.g._ to be facto... John Abbott

17:06 CoCoA-5 Bug #724: RationalSolve: wrongly complains about non zero-dim even in finite char

I have disabled the zero-dimensionality check if the coeff ring is a finite field.
In one simple test that seems t... John Abbott

15:55 CoCoA-5 Bug #724: RationalSolve: wrongly complains about non zero-dim even in finite char

Is it just enough to skip the check for zero-dimensionality in this case?
(if so, that's a really simple fix)
John Abbott

15:53 CoCoA-5 Bug #724 (Closed): RationalSolve: wrongly complains about non zero-dim even in finite char

I ran the example given in issue #723 which tries to compute all rational solutions over a finite field of a homogene... John Abbott

16:35 CoCoA-5 Feature #723: Referring to indets with multiple indices from a polyring

Yes and no. I thought the topic had come up recently, but did not find it on redmine.
Perhaps the manual page for @... John Abbott

16:18 CoCoA-5 Feature #723: Referring to indets with multiple indices from a polyring

Is this what you want? (From the manual ;-)... Anna Maria Bigatti

15:45 CoCoA-5 Feature #723: Referring to indets with multiple indices from a polyring

The existing function @indets("s")@ almost does what I want except that the result is a list rather than an @INTMAP@.... John Abbott

15:39 CoCoA-5 Feature #723: Referring to indets with multiple indices from a polyring

Here is an example I want to run (NB it is very slow)... John Abbott

15:35 CoCoA-5 Feature #723 (New): Referring to indets with multiple indices from a polyring

I would like to be able to refer to multi-index indets in a poly ring using their multiple indices... where the ring ... John Abbott

13:19 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

A commandline option to disable readline is probably a good idea. It is the most flexible.
You can then also add some... Christof Soeger

13:11 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

I have just read some documentation for @readline@ and also looked online. We're not the first people to have proble... John Abbott

12:45 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

Clearly, I was too hasty with my hack to add @readline@ :-(
I know @READLINE@ appears twice at the start -- don't ... John Abbott

12:05 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

And it also works fine for me. Is it also possible to include a tab-completion? :)
Only problem is that the tests of... Christof Soeger

11:27 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

My first try was not successfull. Durign the configure I got... Christof Soeger

01 Jun 2015

22:31 CoCoALib Slug #722 (In Progress): valuation slow for large inputs

I have implemented a version which divides repreatedly by the largest power of the prime which fits into @unsigned lo... John Abbott

10:39 CoCoALib Slug #722: valuation slow for large inputs

Probably @QuoRem@ is a more sensible choice than @gcd@.
John Abbott

17:50 CoCoA-5 Bug #712: External Libs: missing dependencies in Makefiles

Depending on the source files would maybe be to much. It can not know how to recompile the external library.
What I ... Christof Soeger

31 May 2015

11:58 CoCoALib Slug #722: valuation slow for large inputs

Source code is in @NumTheory.C@.
It is just a very simple loop. Presumably I could test divisibility by a small pow... John Abbott

11:56 CoCoALib Slug #722 (Closed): valuation slow for large inputs

I tried @valuation(5,factorial(1000000))@ and it took too long.
Make @valuation@ faster if the prime is small (and... John Abbott

30 May 2015

19:49 CoCoA-5 Feature #711: External Libs: print credits?

If we do implement some scheme for recognising use of external libraries, probably we should also do something simila... John Abbott

14:52 CoCoALib Feature #721: CheckForInterrupt: string arg to specify where it was called?

I have implemented my suggestion in note 1.
It occurred to me that if we do allow a string as arg (to where @Check... John Abbott

10:01 CoCoALib Feature #721 (In Progress): CheckForInterrupt: string arg to specify where it was called?

I prefer that the exception thrown is not of the same type as a normal @CoCoA_ERROR@ because the reasons behind the e... John Abbott

10:22 CoCoALib Feature #385: Design new errors using inheritance

I think it may be a cleaner design to use (impose) the convention that all exceptions CoCoALib are derived from a sin... John Abbott

29 May 2015

17:20 CoCoALib Feature #721: CheckForInterrupt: string arg to specify where it was called?

In fact I was suggesting something else: @CheckInterrupt@ throws something which is not a CoCoA_ERROR, so cocoa-5 doe... Anna Maria Bigatti

16:19 CoCoALib Feature #721: CheckForInterrupt: string arg to specify where it was called?

It looks to be almost trivial to add @CheckForInterrupt(const char*)@ and @CheckForInterrupt(const std::string&)@.
... John Abbott

16:16 CoCoALib Feature #721 (Closed): CheckForInterrupt: string arg to specify where it was called?

Anna indirectly suggested that it might be nice to have an optional arg to @CheckForInterrupt@ which takes a string i... John Abbott

12:03 CoCoALib Feature #718 (In Progress): Insert calls to CheckForInterrupt

Nice! I added it into @TmpGReductor.C@ (I was actually doing something else with very slow GB ;-) )... Anna Maria Bigatti

26 May 2015

15:51 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

(I had to do a bit of updating and adaptations) it compiles and works well.
Under emacs, both in shell and in comi... Anna Maria Bigatti

25 May 2015

12:17 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

Strictly the headers for @readline@ are needed only for compiling @LineProviders.C@.
Similarly @libreadline.a@ is ne... John Abbott

24 May 2015

14:29 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

It's not perfect (_e.g._ prints out READLINE twice in the list of ext libs).
Checking in anyway, as I must go now.
John Abbott

14:26 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

I have just updated @configure@. If a quick test passes, I'll check in.
Currently it is a bit of a hack: _e.g._ it ... John Abbott

22 May 2015

18:44 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

John Abbott wrote:
> What to do?
> * *(A)* one possibility is to offer a command line arg to @CoCoAInterpreter@ whi... Anna Maria Bigatti

18:35 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

The CoCoA-5 tests passed with @readline@ active. So I have checked in (to reduce the risk of losing the code).
St... John Abbott

18:25 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

Compilation of @CoCoAInterpreter@ with require the option @-lreadline@ if the readline library is to be used. John Abbott

18:17 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

There is some problem with lines longer than 1023 chars. I think it is an Emacs/comint problem because cutting and p... John Abbott

18:04 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

I had to change just one line in @Main.C@ (and add some @#include@ directives).
What to do?
* *(A)* one possibili... John Abbott

17:45 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

I have an apparently working first prototype :-)
John Abbott

16:52 CoCoA-5 Feature #719: Readline: consider creating a textual interpreter with readline

JAA does not want to make @readline@ mandatory for compiling CoCoALib, nor even CoCoA-5.
So @readline@ will become a... John Abbott

16:46 CoCoA-5 Feature #719 (In Progress): Readline: consider creating a textual interpreter with readline

I have downloaded and built readline-6.3.
Building was non-trivial: by default it compiled 32-bit (not compatible ... John Abbott

14:14 CoCoA-5 Feature #720: External libs: specifying I/O streams (initialization?)

@CoCoAInterpreter@ works just fine because the default streams in @libnormaliz@ are @cout@ and/or @cerr@ which is wha... John Abbott

13:45 CoCoALib Slug #675: Matrix determinant over multivariate poly ring

A Google search for "division free algorithm for determinant" produces several hits. Possibly something there may be... John Abbott

13:21 CoCoALib Slug #675 (In Progress): Matrix determinant over multivariate poly ring

I have changed @myDet@ in @DenseMatrix.C@ so that it calls @DetDirect@ only if there are at least 3 indets and the ma... John Abbott

21 May 2015

17:53 CoCoA-5 Feature #720 (New): External libs: specifying I/O streams (initialization?)

libnormaliz needs to be informed of two output streams: one for logging info (in "verbose" mode), the other for error... John Abbott

17:47 CoCoA-5 Feature #719 (Closed): Readline: consider creating a textual interpreter with readline

This was discussed in March 2009 via email. I will copy the essence of the messages here.
Christof would greatly ... John Abbott

16:02 CoCoALib Bug #666 (Feedback): RatReconstructByLattice fails in some simple cases

I have added a comment to the documentation.
I discussed with Christof the possibility of throwing an exception wh... John Abbott

15:23 CoCoA-5 Bug #713 (In Progress): External libs: interrupting not easy

It is probably best to KISS: _i.e._ just have a straightforward signal handler which simply sets the flag. If this p... John Abbott

11:57 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)

Attempts to profile the running program on my computer failed :-(
@gprof@ does not work properly in MacOSX, and ther... John Abbott

11:34 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)

With Christof we ran a side-by-side comparison (on my machine) with "verbose" activated.
The run under CoCoA-5 was a... John Abbott

11:26 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)

On my machine (MacBook Pro with OSX 10.5.8, compiler version 4.2.1)
Normaliz 2.12 took 9mins (about 550s)
CoCoA-5 ... John Abbott

11:19 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)

Here is the original Normaliz input file (called @5x5.in@ in their source tree):... John Abbott

11:17 CoCoA-5 Slug #709: Speed of some Normaliz calls (NmzComputation)

Here is body of the CoCoALib code I used to speed testing in CoCoALib:... John Abbott

11:15 CoCoA-5 Slug #709 (In Progress): Speed of some Normaliz calls (NmzComputation)

Here is the input I was giving to CoCoA-5... John Abbott

10:54 CoCoALib Feature #718: Insert calls to CheckForInterrupt

I suggest we keep a log here of the files we have looked at with a view to inserting calls to @CheckForInterrupt@. John Abbott

10:52 CoCoALib Feature #718 (Closed): Insert calls to CheckForInterrupt

So that interrupts are acted upon we must insert calls to @CheckForInterrupt@ in various places -- principally in loo... John Abbott

09:41 CoCoALib Feature #714 (Resolved): Interrupt mechanism

I have checked in the impl with both *(A)* and *(B)*.
Then I deleted *(A)* and checked in again. This way I hope *(... John Abbott

09:38 CoCoALib Feature #715 (Resolved): RandomSubsetIndices, RandomTupleIndices?

I have already reported this (and logged time) in issue #622.
I think @RandomSubsetIndices@ is likely to be useful... John Abbott

20 May 2015

20:09 CoCoA-5 Feature #317: BuiltInFunctions: evalArgAsLong

... I liked it so much I also changed *RandomTupleIndices*, *IsZeroRow*, *IsZeroCol*.
The code becomes shorter and e... Anna Maria Bigatti

19:53 CoCoA-5 Feature #317 (Resolved): BuiltInFunctions: evalArgAsLong

Anna Maria Bigatti

19:49 CoCoA-5 Feature #317: BuiltInFunctions: evalArgAsLong

I have implemented in *Interpreter.C* the function *evalArgAsLong* returning a *long*.
I tested it on the definition... Anna Maria Bigatti

19:13 CoCoALib Feature #573: Use symbolic links for external libraries

John Abbott wrote:
> What is the current status? Has the cleaning been done? It has been working fine for several ... Anna Maria Bigatti

17:24 CoCoALib Feature #573 (Feedback): Use symbolic links for external libraries

What is the current status? Has the cleaning been done? It has been working fine for several months, so changing st... John Abbott

19:12 CoCoA-5 Feature #485 (Resolved): Initialization for CoCoA-5: file init.cocoa5

Anna Maria Bigatti

17:31 CoCoA-5 Feature #485: Initialization for CoCoA-5: file init.cocoa5

Anna Maria Bigatti wrote:
> the general @init@ file now works well.
> I don't think there is a particular need for ... Anna Maria Bigatti

19:11 CoCoA-5 Support #717: CoCoAManual: improve part on RINGHOM

Added *Introduction to RINGHOM* and *Composition of RINGHOM* Anna Maria Bigatti

19:08 CoCoA-5 Support #717 (Closed): CoCoAManual: improve part on RINGHOM

Improve chapter on RINGHOM Anna Maria Bigatti

19:06 CoCoA-5 Feature #704 (Feedback): rename MinGensGeneral?

All done: Renamed it *MinSubsetOfGens* and documented Anna Maria Bigatti

18:33 CoCoA-5 Feature #711: External Libs: print credits?

Now I'm less sure about using a @std::map@ since it might be difficult and/or costly to make it threadsafe.
Probab... John Abbott

18:16 CoCoA-5 Feature #711: External Libs: print credits?

I spoke to Christof about the idea of recording when ext libs are actually used (_e.g._ see my suggestion of counters... John Abbott

17:57 CoCoA-5 Feature #622: New function: RandomSubset

I have checked in @RandomSubsetIndices@ and @RandomTupleIndices@ (in CoCoALib); also the interface fns in @BuiltinFun... John Abbott

17:20 CoCoA-5 Feature #622: New function: RandomSubset

John Abbott wrote:
> I have added defns to CoCoALib of @RandomSubsetIndices@ and @RandomTupleIndices@. These names ... Anna Maria Bigatti

15:40 CoCoA-5 Feature #622: New function: RandomSubset

Checked in.
You'll have to remove @interrupt.C@ from @src/AlgebraicCore/Makefile@ until I can check those files in..... John Abbott

15:28 CoCoA-5 Feature #622: New function: RandomSubset

John Abbott wrote:
> Where should the new functions go?
>
> Currently they are in a new file @combinatorics.C@ be... Anna Maria Bigatti

15:22 CoCoA-5 Feature #622: New function: RandomSubset

Where should the new functions go?
Currently they are in a new file @combinatorics.C@ because I could not see any ... John Abbott

13:50 CoCoA-5 Feature #622: New function: RandomSubset

I have added defns to CoCoALib of @RandomSubsetIndices@ and @RandomTupleIndices@. These names are very long :-/
N... John Abbott

12:48 CoCoA-5 Feature #622 (Feedback): New function: RandomSubset

Anna Maria Bigatti

12:04 CoCoA-5 Feature #622: New function: RandomSubset

documentation done (and cvs'ed)
When we implement the "Indices" in CoCoALib we'll remove them from "NotBuiltin".
... Anna Maria Bigatti

11:41 CoCoA-5 Feature #622: New function: RandomSubset

I added to NotBuiltin.cpkg the functions... Anna Maria Bigatti

10:38 CoCoA-5 Feature #622: New function: RandomSubset

I suggest having also @RandomTuple(n,r)@ which is indeed pretty simple: in CoCoA... Anna Maria Bigatti

15:42 CoCoA-5 Bug #716: NotBuiltin.cpkg5: indent for MODULE

John Abbott wrote:
> On line 126 when @indent@ prints out a submodule, it prints out the letter @F@ (in a string). ... Anna Maria Bigatti

15:19 CoCoA-5 Bug #716 (In Progress): NotBuiltin.cpkg5: indent for MODULE

On line 126 when @indent@ prints out a submodule, it prints out the letter @F@ (in a string). Is this right? I supp... John Abbott

13:10 CoCoA-5 Support #548 (Resolved): Printing rings with ID

John Abbott wrote:
> I think it has just been forgotten; it seems like a good idea to me. Indeed now that direct pr... Anna Maria Bigatti

12:47 CoCoALib Feature #715 (Closed): RandomSubsetIndices, RandomTupleIndices?

In CoCoA we have *RandomSubsetIndices, RandomTupleIndices*.
Could they be useful in CoCoALib?
If so implement trans... Anna Maria Bigatti

12:38 CoCoALib Feature #714: Interrupt mechanism

John Abbott wrote:
> Is there any sense in offering approach *(A)*? Perhaps it is best to offer just *(B)*, and add ... Anna Maria Bigatti

12:21 CoCoALib Feature #714: Interrupt mechanism

I am undecided about which ways to offer for telling the GlobalManager which interrupt flag to watch:
* *(A)* specif... John Abbott

12:34 CoCoA-5 Support #616: Release: CoCoA-5.1.2

First run of... Anna Maria Bigatti

10:22 CoCoALib Slug #675: Matrix determinant over multivariate poly ring

in the cocoa manual there is this example... Anna Maria Bigatti

19 May 2015

17:55 CoCoALib Feature #714: Interrupt mechanism

Also seems to work with the C5 GUI now :-)
John Abbott

16:56 CoCoALib Feature #714 (In Progress): Interrupt mechanism

I have implemented a first version following the outlines given above.
It seems to pass a quick test -- I have mad... John Abbott

11:41 CoCoALib Feature #714: Interrupt mechanism

Here is a further complication: how to handle several libraries together?
Let us suppose that CoCoALib has a mechani... John Abbott

10:16 CoCoALib Feature #714: Interrupt mechanism

There is a slight risk in my proposal above. If @SignalInterrupt@ is called asynchronously while @CheckForInterrupt@... John Abbott

10:09 CoCoALib Feature #714: Interrupt mechanism

As far as CoCoA-5 is concerned CoCoALib is "external software", and the problem noted in #713 applies as much to CoCo... John Abbott

10:04 CoCoALib Feature #714 (Closed): Interrupt mechanism

Add an interrupt mechanism to CoCoALib.
John Abbott

17:24 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages

The C5 GUI still prints out the packages as they are loaded. Fix!
John Abbott

13:38 CoCoA-5 Feature #711: External Libs: print credits?

I think that @Banner.C@ is a reasonable place to put it. I have cleaned up the code slightly; it now also prints out... John Abbott