Activity
From 15 Apr 2015 to 14 May 2015
13 May 2015
- 17:59 CoCoALib Feature #658: Indets actually in a poly (or vector or matrix)
- An advantage of @vector<bool>@ is that it avoids the problem/incompatibility of indices in C++ starting from 0 (both ...
- 17:20 CoCoA-5 Feature #700: Which external libs are present?
- JAA and AMB think that there is little need to have a similar function in CoCoALib since there are the CPP defines @C...
- 16:41 CoCoA-5 Feature #700: Which external libs are present?
- Done.
Just fiddling with the string returned by... - 12:09 CoCoA-5 Feature #700: Which external libs are present?
- Some ideas:
* a function @ExternalLibs@ which returns a list of strings
* a function @HaveExternalLib@ which expect... - 12:08 CoCoA-5 Feature #700 (Closed): Which external libs are present?
- It might be nice to have a way in CoCoA-5 to know which external libs are actually present.
- 14:40 CoCoALib Slug #701: Makefile; limit dependencies on external libs
- This issue is not so important (hence priority *low*); not even sure it is worth fixing, as it may complicate the bui...
- 14:37 CoCoALib Slug #701 (Rejected): Makefile; limit dependencies on external libs
- If you have CoCoALib already (configured and) compiled, and want to repeat compilation but also including an external...
12 May 2015
- 18:20 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- John Abbott wrote:
> JAA notes that Emacs lisp has the built-in variable *@system-type@* which gives information abo... - 17:13 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- JAA notes that Emacs lisp has the built-in variable *@system-type@* which gives information about which OS is running...
- 17:09 CoCoA-5 Bug #699: Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- Anna Maria Bigatti wrote:
> So, we cannot remember why we did this change: probably to allow spaces in path.
We r... - 16:47 CoCoA-5 Bug #699 (Rejected): Emacs UI: set back "cocoa5-executable" to "CoCoAInterpreter"?
- In earlier versions @cocoa5-executable@ was @CoCoAInterpreter@.
Now it is the script @cocoa5@ (and this caused prob... - 15:36 CoCoA-5 Bug #698: Emacs UI: problems with packages on windows
- The problem was solved and tested on a student's computer.
It is enough to add one line in the file *<cocoadir>/emac... - 15:29 CoCoA-5 Bug #698 (Closed): Emacs UI: problems with packages on windows
- The recent installation of CoCoA for the Computer Algebra course in Genoa showed a problem on Windows in finding pack...
11 May 2015
- 17:54 CoCoALib Feature #623 (Closed): Inverse of a matrix over ZZ
- Done.
If the matrix is over an IntegralDomain then it is mapped into FractionField.
Then the inverse is mapped back... - 16:05 CoCoALib Feature #625 (Closed): NumTheory: sieve of Eratosthenes
- Anna says OK for the name -- hard to find a shorter name which is clearer.
I have clarified the manual.
Closing.
- 16:02 CoCoALib Bug #631: Ambiguous: rank for matrix (in ex-matrix1.C)
- I noticed that some of Christof's code uses @rank@; I have written to him asking whether it would be resaonable to ch...
- 15:32 CoCoALib Bug #631 (Feedback): Ambiguous: rank for matrix (in ex-matrix1.C)
- I think everything has now been done.
- 14:43 CoCoA-5 Bug #697 (Closed): Interpreter: Avoid outputting an empty line after each line of input
- CoCoA-5 prints an empty line after each input line which outputs nothing.
Might be related to the fact that standa... - 14:07 CoCoALib Support #604 (Closed): Release: CoCoALib-0.99535
10 May 2015
- 20:02 CoCoALib Feature #625: NumTheory: sieve of Eratosthenes
- Currently the function is called @eratosthenes@; is there a better name?
The doc needs slight clarification @erato... - 16:03 CoCoALib Feature #625: NumTheory: sieve of Eratosthenes
- Can we close this?
09 May 2015
- 15:48 CoCoALib Feature #678: Accumulator (like a geobucket)
- The implementation will almost surely be best done via mem fns since the actual inner working of an "accumulator" wil...
08 May 2015
- 13:32 CoCoA-5 Feature #622 (In Progress): New function: RandomSubset
- Following CoCoALib conventions the return type should be @vector<long>@.
What should the values in the vector be? ... - 11:58 CoCoALib Feature #215: Janet Bases: check and include code in CoCoALib (first prototype)
- This issue has status @Feedback@ but the percent done is just 20%.
What is the actual status? Should this issue be ... - 11:50 CoCoALib Bug #15: Adjoint of a non-invertible matrix
- I have implemented a first version of @AdjByDetOfMinors@; it may already be obsolete because I have also implemented ...
- 11:39 CoCoALib Support #696 (Closed): test-OrderedRing: activate or eliminate?
- There is a file @test-OrderedRing1.C@ which is not actually executed.
Either fix it so that it works (currently fail... - 11:37 CoCoALib Support #695: Remove cruft from test files
- Commented out code could make sense in the following cases:
* the test is valid, but the relevant CoCoALib code is N... - 11:34 CoCoALib Support #695 (New): Remove cruft from test files
- Several test files contain commented out code; this should either be removed or made active (or perhaps add a clear c...
- 11:32 CoCoALib Support #694: In test files: when is assert.H needed?
- Actually I am rather surprised that it is not necessary for all tests.
Investigate why it works without explicitly... - 11:30 CoCoALib Support #694 (Closed): In test files: when is assert.H needed?
- Some test files explicitly include @CoCoA/assert.H@ but many do not.
Check that it is truly needed when it is pres... - 11:28 CoCoALib Design #642 (Resolved): Move code in test file into namespace CoCoA
- JAA has finished all test files. Will check-in, then we can verify on several platforms that all is well.
- 11:26 CoCoALib Feature #623: Inverse of a matrix over ZZ
- Here is an invertible 3x3 matrix...
- 11:21 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages
- The excesive verbosity has arisen again: @Rank@ was exported from 2 packages (@BackwardCompatible@ and @obsolescent@)...
- 09:15 CoCoALib Support #621: Release: CoCoALib-0.99536
- generated cvs log...
07 May 2015
- 16:57 CoCoALib Design #642: Move code in test file into namespace CoCoA
- JAA has now done @test-[J-Q]*.C@ and @test-[a-h]*.C@
- 15:36 CoCoALib Bug #693 (Closed): Makefile_dependencies in src/tests/
- The file @src/tests/Makefile_dependencies@ seems to be suspiciously simple. Either it is wrong or it is pointless. ...
- 13:50 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Anna Maria Bigatti wrote:
> - when @IsZeroDivisor@ is called and should return @false@ then its ring is not integral...
04 May 2015
- 15:43 CoCoA-5 Support #692: Local variables hiding out ones at top level
- In the example given I note that @x@ is actually a *protected* variable -- perhaps even more reason for a warning?
- 15:11 CoCoA-5 Support #692 (Rejected): Local variables hiding out ones at top level
- In function definitions local variables hiding outer ones are signalled by a Warning.
At top level not. This might ...
30 Apr 2015
- 10:07 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Also @x/i@ is working now.
(will cvs it this afternoon) - 07:38 CoCoALib Feature #385: Design new errors using inheritance
- ...
29 Apr 2015
- 19:03 CoCoALib Feature #520: Compute inverse in quotient ring (i.e. division in algebraic extn)
- Polishing up all the code is always long and tedious....
Anyway!
The code is there and it works.
I still have prob... - 15:46 CoCoALib Slug #691 (In Progress): Matrix determinant over ZZ
- Hint: @DenseMatrix.C:462@ the dispatch function @DenseMatImpl::myDet@ does not handle matrices over ZZ specially -- t...
- 11:33 CoCoALib Slug #691: Matrix determinant over ZZ
- Just as a speed comparison reference I computed @3^(3^17)@ on both machines:
* old G4 took about 50s (on battery pow... - 11:22 CoCoALib Slug #691: Matrix determinant over ZZ
- I've just tried a 1000x1000 matrix: the old G4 took about 550s, my newer MacBook Pro took 1400s. Embarrassing!
*NOT... - 10:32 CoCoALib Slug #691: Matrix determinant over ZZ
- What?!? My dad's ancient iBook G4 is just as fast as my much newer MacBook Pro???
Something must be seriously wro... - 10:31 CoCoALib Slug #691 (Closed): Matrix determinant over ZZ
- I tried computing the following:...
24 Apr 2015
- 17:59 CoCoA-5 Feature #622: New function: RandomSubset
- Let's start with just yours, for many reasons:
- it is simpler, as you said
- indeed that's also what I needed ;-)
... - 11:23 CoCoA-5 Feature #622: New function: RandomSubset
- We could simply have both; that way the user can choose which is more convenient (or efficient).
If we do choose t... - 11:20 CoCoA-5 Feature #622: New function: RandomSubset
- I wanted a @RandomSubset@ function which generated a random subset of @1..n@ of cardinality @r@. I was surprised whe...
- 11:34 CoCoA-5 Feature #531: Package protected variables should know which package protected them
- I do find it annoying when CoCoA says that name @XYZ@ is a package-exported variable but then does not tell me which ...
23 Apr 2015
- 19:12 CoCoALib Feature #690: Fault tolerant rational reconstruction: implement simultaneous version
- What exactly should the interface be?
Who does the Chinese remaindering?
Which single rational reconstructor shou... - 19:10 CoCoALib Feature #690 (New): Fault tolerant rational reconstruction: implement simultaneous version
- Implement the algorithm for simultaneously reconstructing several rational numbers.
- 19:09 CoCoALib Feature #689: Fault tolerant rational reconstruction: make bad factor publicly accessible
- Suggested name of the new fn is @BadMFactor@; other candidates?
- 19:07 CoCoALib Feature #689 (Closed): Fault tolerant rational reconstruction: make bad factor publicly accessible
- In @RatReconstructByContFrac@ the bad factor of the combined modulus is computed; make it publicly accessible
22 Apr 2015
- 14:38 CoCoALib Slug #688: PolyAlgebraHom (PolyRingHom) evaluate multivariate polynomials
- I thought that it could be improved using geobuckets, so I searched the actual code performing the computation.
It i... - 13:53 CoCoALib Slug #688: PolyAlgebraHom (PolyRingHom) evaluate multivariate polynomials
- We found this slug while workig on @Implicit@ (evaluation for checking the final output can be very slow)
- 13:52 CoCoALib Slug #688 (New): PolyAlgebraHom (PolyRingHom) evaluate multivariate polynomials
- Application of PolyAlgebraHom can be unreasonably slow (this is indeed a problem in optimizing multivariate evaluation)
20 Apr 2015
- 13:21 CoCoALib Design #686 (New): myAddMul in poly rings
- 13:17 CoCoALib Design #686 (In Progress): myAddMul in poly rings
- Better names:
* *@myMoveLMToFront@*
* *@myMoveLMToBack@*
* *@myAddMulLM@*
- 11:59 CoCoALib Design #686: myAddMul in poly rings
- John Abbott wrote:
> Mario Albert calls @myAddMul@ in a "bad" way in @TmpJBEnv.C:323@.
> From his comments it seems... - 12:34 CoCoALib Bug #631: Ambiguous: rank for matrix (in ex-matrix1.C)
- Renaming is done now. Isn't it?
- 11:17 CoCoA-5 Bug #684 (Closed): Emacs UI: wrong name after auto-inserting enddefine
- As it works for me and for Anna, I'm closing the issue. The EmacsUI code really needs to be completely rewritten, bu...
- 10:31 CoCoA-5 Bug #684: Emacs UI: wrong name after auto-inserting enddefine
- It works for me.
- 10:26 CoCoALib Feature #658: Indets actually in a poly (or vector or matrix)
- also related to #91
19 Apr 2015
- 20:47 CoCoA-5 Slug #687: Builtin fn makes unnecessary copy of arg
- I ran the following test:...
- 20:36 CoCoA-5 Slug #687 (Closed): Builtin fn makes unnecessary copy of arg
- While testing/profiling @IndetsIn@ (defined in @BuiltinOneLiners.C@) I noticed that the arg was copied by the fn, mak...
- 18:17 CoCoALib Feature #658: Indets actually in a poly (or vector or matrix)
- I am still undecided about the "return" value (and its type):
* *A* a list of integer indices (presumably of type @ve...
17 Apr 2015
- 18:32 CoCoALib Feature #658: Indets actually in a poly (or vector or matrix)
- I have impl'ed a first version (simple rather than efficient).
Not yet checked in; I want to do some testing first.
- 18:27 CoCoALib Design #686: myAddMul in poly rings
- Mario Albert calls @myAddMul@ in a "bad" way in @TmpJBEnv.C:323@.
From his comments it seems he wants to do:... - 18:25 CoCoALib Design #686: myAddMul in poly rings
- I have just added a check that the first arg must be non-zero (o/w LM does not exist).
Should it be an error or a @C... - 18:20 CoCoALib Design #686 (New): myAddMul in poly rings
- The mem fn @SparsePolyRingBase::myAddMul@ has strange semantics; the only documentation is a 1 line comment in the so...
16 Apr 2015
- 22:39 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages
- JAA does not much like the current approach (variable @PkgOut@).
If a package provokes an error then the screen fill... - 22:28 CoCoA-5 Feature #652: Flag to enable/disable printing of list of loaded packages
- Now resets error counter before reading each package (@Main.C:289@).
- 12:52 CoCoALib Feature #685: Use DivMask inside QBGenerator
- We shall need collections of @DivMask@ mirroring the elements of @myCornerList@ and @myAvoidList@. A complication ar...
- 12:44 CoCoALib Feature #685 (New): Use DivMask inside QBGenerator
- Internally @QBGenerator@ usually makes very many divisibility tests; use @DivMask@ to make these tests faster.
Thi...
15 Apr 2015
- 20:22 CoCoALib Design #683 (In Progress): Module index component in internal compressed representation
- Is there a @MaxExp@ function? At least one @PPMonoid@ has no upper limit on exponents; what value should be used in ...
- 20:15 CoCoALib Bug #232: No test for QBGenerator
- Just to wake up this thread as I have modified @QBGenerator@ lately.
Does anyone actually need @myNewCorner@ list?... - 20:13 CoCoA-5 Bug #684 (Resolved): Emacs UI: wrong name after auto-inserting enddefine
- I think I have fixed it; not entirely sure because several Emacs Lisp fns do not work the way I expected them too (or...
- 10:35 CoCoA-5 Bug #684: Emacs UI: wrong name after auto-inserting enddefine
- Perhaps the naive reverse search can be replaced by a call to @cocoa5-last-unended-begin@ which should be intelligent...
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