Activity
From 21 Apr 2019 to 20 May 2019
11 May 2019
- 21:57 Feature #1283: Printing for (prime) finite fields
- Consider the following session:...
- 21:53 Feature #1283 (Closed): Printing for (prime) finite fields
- I have found a "useful" result in an old file.
Unfortunately the result contains printed forms of the RingHoms used ...
05 May 2019
- 10:07 Feature #1282 (New): subresultant
- A long time ago Ring Xiao sent an implementation of Ducos's subresultant chain algorithm.
Clean it, and incorporate ...
04 May 2019
- 21:05 Bug #1281: Factor of multivariate sometimes prints ERROR
- The simplest examples (with 3 terms) seem to be of deg 7 (none found in deg 6 or deg 5)....
- 20:55 Bug #1281 (New): Factor of multivariate sometimes prints ERROR
- Here is an example:...
03 May 2019
- 20:36 Bug #1280: Determinant & Inverse of matrix over non integral domain
- I'm now wondering what is the difference between @ConstMatrixViewBase::myDet@ and @DenseMatImpl::myDet@...
- 16:35 Bug #1280: Determinant & Inverse of matrix over non integral domain
- I'd like to rewrite @ConstMatrixViewBase::myDet@ so that it calls the "fast" impls for small matrices. How to do thi...
- 15:59 Bug #1280 (In Progress): Determinant & Inverse of matrix over non integral domain
- Some thoughts about computing the determinant.
There is special case code for:
* small matrices (up to 5x5 incl.)... - 13:57 Bug #1280: Determinant & Inverse of matrix over non integral domain
- Here is a simple failing case:...
- 13:51 Bug #1280 (In Progress): Determinant & Inverse of matrix over non integral domain
- CoCoA gives unnecessary errors when computing det or inverse of a matrix over a non-integral domain.
Rectify! - 14:05 Support #1263: Tidy CoCoALib test directory
- I have just checked that running *all* @test-bugNNN@ executables takes about 0.03s on my computer. Since these files...
- 13:45 Feature #303: Rows and Columns of a matrix
- I have now added @GetRow@, @GetCol@, @GetRows@ and @GetCols@ to @MatrixOps.txt@
Fixed a couple of minor bugs. Is ... - 13:24 Feature #303 (Resolved): Rows and Columns of a matrix
- I have just implemented @GetRow@, @GetCol@, @GetRows@ and @GetCols@.
Perhaps the names are not ideal, but they are... - 11:47 Design #1279 (Closed): Tidy up code for matrix determinant
- I recently encountered an unexpected error while trying to compute the determinant of a 2x2 matrix over @ZZ/(841)@ wh...
- 11:42 Feature #1278 (New): Port old "clever" code for matrix determinant over ZZ to CoCoALib
- In CoCoA-4 there was a "clever" implementation of matrix determinant(over ZZ) based on the paper with Bronstein and M...
- 11:39 Feature #11 (Closed): Bareiss algorithm
- This was done ages ago. It has been working trouble-free for over 2 years.
Closing. - 11:35 Slug #691 (Closed): Matrix determinant over ZZ
- I think this was resolved some time ago when I arranged for the code to recognise the case that the entries are all i...
30 Apr 2019
- 17:18 Design #925: MachineInt or long for args which are indices (yet again)
- Postponing because there are too many other more pressing issues. Anyway the current code works adequately, so it is...
- 11:51 Feature #813: Implement "elim" in CoCoALib
- It would be nice to complete this before the next release! To this end, I have increased the priority...
- 10:54 Feature #1277: Gaussian row reduction
- NTL's doc shows just one fn *@gauss@* which accepts 2 args: matrix @M@ and an optional integer @w@ (default is number...
- 10:44 Feature #1277: Gaussian row reduction
- The request seems reasonable to me.
Not yet sure what the best design might be, but I suggest the following as a s... - 10:40 Feature #1277 (Closed): Gaussian row reduction
- Julian Danner (Passau) would like CoCoA to offer matrix row reduction via gaussian elimination.
Discuss, design, i...
29 Apr 2019
- 21:05 Support #1276: Release 0.99650
- List of principal changes made: *19th november 2019*
* NO LONGER C++03 compatible! We are moving towards C++14 (#89... - 21:03 Support #1276 (Closed): Release 0.99650
- Description
Everything related to making a CoCoALib release:
* Redmine Roadmap: close or postpone issue
* ... - 18:38 Support #1039 (Resolved): Rename iroot?
- I have changed the names into *@FloorRoot@* and *@IsExactFloorRoot@*.
Added *@iroot@* to @obsolescent.H/C@.
Test an... - 13:25 Support #1039: Rename iroot?
- Even though GMP allows negative inputs to its @mpz_root@ function, I like the idea of limiting the number whose root ...
- 13:57 Support #1263: Tidy CoCoALib test directory
- I have noticed that there some tests which run quickly (_e.g._ less than 0.01s on my computer), but the compilation t...
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