Activity
From 07 Apr 2012 to 06 May 2012
04 May 2012
- 21:38 Feature #153: Shorter simpler names for some bool3 values and functions
- Spent about 45 mins discussing with Anna. Differences of opinion remain.
- 21:36 Feature #153 (Closed): Shorter simpler names for some bool3 values and functions
- We need shorter names for *@IsDefinitelyTrue@* and *@IsDefinitelyFalse@*.
Also need a shorter way of expressing th... - 21:30 Feature #138: Automatic conversion from bool3 to bool?
- I have modified *@operator<<@* for OpenMath streams so that they handle explicitly machine integers (rather than *@Ma...
- 12:36 Support #75: Documentation review by Caleo
- Alessandra reports:
* the examples 2,3,4 of *@ex-RingWeyl@* are almost identical -- this cannot be what is intended!
... - 12:13 Feature #152 (Closed): Replace bool3 by tribool
- In some quiet moment switch to using BOOST's *@tribool@* (or C++11 equivalent if it exists).
It seems pointless try...
03 May 2012
- 15:32 Feature #151: Iterated CanonicalHom
- There is already some code called *@TmpChainCanonicalHom@* in @CanonicalHom.[HC]@: it looks whether there is a "chain...
- 15:25 Feature #151 (New): Iterated CanonicalHom
- Implement *@NaturalMap@* and iterated *@CanonicalHom@*
- 15:26 Feature #150: RingOf rather than owner? (and than AmbientRing, ...)
- *@RingOf@* can be applied to: ideal, RingElem, matrix, HomogList.
- 15:03 Feature #150 (In Progress): RingOf rather than owner? (and than AmbientRing, ...)
- In CoCoA-5 to get the ring to which a RingElem belongs we use the fn *@RingOf@*.
Currently in CoCoALib the analogous...
02 May 2012
- 19:37 Bug #149 (New): Makefile dependencies
- There are problems with dependencies for optional external libraries.
How to make these dependencies visible only ...
01 May 2012
- 11:44 Feature #147 (In Progress): Buchberger-Moeller: impl via modular reduction
- Impl the idea presented in AKR "Zero-dim Schemes" which uses modular reduction to get the form of the answer quickly ...
- 11:39 Feature #146 (New): Buchberger-Moeller: input conversions
- Variants of BM which accept more convenient input (e.g. points or 0-dim ideals).
Simply convert inputs to sets of ... - 11:37 Feature #145 (New): Buchberger-Moeller: fast modular impl
- Impl BM over a small prime finite field. Aim for speed.
Input ideals are represented as multiplication matrices (... - 11:35 Feature #144 (Closed): Buchberger-Moeller: generic impl
- Implement generic BM algorithm over any field.
Aim is to make impl clean rather than fast.
Each input ideal is re... - 10:17 Feature #143 (In Progress): Buchberger-Moeller (parent task)
- Robbiano wants to have Buchberger-Moeller in C5. It makes most sense to implement it in CoCoALib and then make it vi...
30 Apr 2012
- 17:58 Feature #142: Improve threadsafety
- If ref counting is removed (seems to be highly desirable to avoid it in multithreaded programs) then CoCoALib needs t...
- 17:51 Feature #142 (In Progress): Improve threadsafety
- Currently CoCoALib can be made (largely?) threadsafe by compiling with the flag *@-DCoCoA_THREADSAFE_HACK@*. As its ...
27 Apr 2012
- 16:29 Feature #125: Matrix equation solving; linear system solving
- Implemented the chosen names.
Created/corrected CoCoALib doc for the new fns.
Added CoCoALib example program *@ex-m... - 15:06 Feature #125: Matrix equation solving; linear system solving
- A quick count using Google suggests that *@LinSolve@* as about twice as popular as *@MatSolve@*. Anna points out tha...
- 15:00 Feature #50: Polynomial content
- Tests and doc are already done for CoCoA-5.
Still missing in CoCoALib - 12:49 Support #75: Documentation review by Caleo
- Alessandra reports
* finished *@BigInt@*, *@BigRat@* and *@MachineInt@* (doc and examples)
* *@bool3@* doc was poor; ... - 12:14 Support #140 (Closed): Doc & example for convert
- Alessandra reported (some time ago) that the doc for *@convert@* was rather unclear -- she could not figure out how t...
- 12:10 Feature #138: Automatic conversion from bool3 to bool?
- John Abbott wrote:
> The BOOST equivalent of @bool3@ is called @tribool@. It offers automatic conversion to and from... - 11:30 Feature #139 (Closed): Usefulness of ring casting fns (remove AsPolyRing, etc.)
- Caleo pointed out that it is unclear what *@AsFractionField@* does.
JAA has already noticed that it is a nuisance ha... - 10:50 Bug #135: Revise interface to SmallFpImpl & friends
- Confirmed need for major redesign.
Current main doubt is how public I should be about the type *@SmallFpImpl::valu...
26 Apr 2012
- 16:18 Feature #51: polynomial coefficient extraction w.r.t. variable
- After talking to AMB, it seems best to "forget" the general function for the time being (until we have a genuine need...
- 16:14 Feature #51: polynomial coefficient extraction w.r.t. variable
- John Abbott wrote:
> We need a good name for this fn. The name @CoefficientsWRT@ would be fairly good, but could be ...
24 Apr 2012
- 17:09 Feature #138 (Closed): Automatic conversion from bool3 to bool?
- The BOOST equivalent of @bool3@ is called @tribool@. It offers automatic conversion to and from @bool@.
I have al... - 16:08 Feature #107: Recognizing finite fields
- Added C5 documentation for @IsFiniteField@, @LogCardinality@, @IsPthPower@ and @PthRoot@.
JAA wonders whether *@Ext... - 14:58 Feature #107: Recognizing finite fields
- JAA now believes that he has a decent algorithm for testing a polynomial ideal for maximality. As prerequisite it ne...
- 14:52 Feature #51: polynomial coefficient extraction w.r.t. variable
- JAA thinks that the most useful form of @CoeffsWRTBasis@ is one where the basis is an ordered set of PPs. Mathematic...
- 11:33 Feature #51: polynomial coefficient extraction w.r.t. variable
- Part of this task has already been solved by #90 @CoefficientsWRT@.
JAA now needs a fn which converts a polynomial i... - 11:17 Slug #129: Better GCD
- I cleaned the code so that it leaks less memory now.
The cleaning was a consequence of some other development.
23 Apr 2012
- 16:49 Feature #107: Recognizing finite fields
- Where should the documentation go?
- 16:46 Feature #107: Recognizing finite fields
- I have made the following fns available in CoCoA-5:
* @IsFiniteField@
* @LogCardinality@
* @IsPthPower@
* @PthRoot@
...
20 Apr 2012
- 12:19 Feature #125: Matrix equation solving; linear system solving
- While speaking to Renzo about choosing the name, I realised that solving a linear system is slightly different from s...
- 11:56 Feature #107: Recognizing finite fields
- I really don't like the name @CardExp@ -- I think it is too cryptic.
The value it returns is log(cardinality)/log(... - 11:13 Bug #135 (Closed): Revise interface to SmallFpImpl & friends
- After starting work on the reimplementation of @DUPFF@ in C++, I discovered that the interface to @SmallFpImpl@ is ne...
19 Apr 2012
- 23:59 Feature #134 (New): Convenience ring ctors and homs
- Here are some ideas for convenient ring ctors which make homs too:
* change PPOrdering (makes new poly ring, and pro...
18 Apr 2012
- 22:22 Feature #107: Recognizing finite fields
- First impls have been made.
The cardinality is represented by a fn called @CardExp@ which gives the exponent of @p...
16 Apr 2012
- 15:50 Feature #40: Squarefree factorization - Alessio d'Ali`
- Alessio did numerous timing experiments to understand whether reordering the variables could lead to a useful gain in...
- 10:50 Feature #125: Matrix equation solving; linear system solving
- As mentioned in the previous post, currently I have used several fn names for solving linear systems: a generic fn, a...
- 10:45 Feature #125: Matrix equation solving; linear system solving
- What names should we use for the fns which find a solution to a linear system? The name may be related to the name f...
15 Apr 2012
- 22:07 Bug #130 (New): Design problem in ideals
- Now that there is a linear system solver I tried to write a general implementation for
@SparsePolyRingBase::IdealImp... - 21:59 Slug #129: Better GCD
- Implemented a first version where some GCD computations are passed to the old CoCoA-4 code. It is a poor implementat...
- 21:38 Slug #129 (New): Better GCD
- Currently CoCoALib computes GCDs using GBasis/syzygy computations. This is often terribly slow -- there is faster co...
13 Apr 2012
- 18:29 Feature #125: Matrix equation solving; linear system solving
- Added some doc in @MatrixArith.txt@, and a new test @test-matrix3.C@.
No new example program yet.
New fns not yet a... - 14:30 Feature #125: Matrix equation solving; linear system solving
- JAA has an impl of the generic case (over a field).
JAA has written a test for this first impl.
No example, and no ...
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