Activity
From 21 Sep 2016 to 20 Oct 2016
20 Oct 2016
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20:10 Design #950 (Closed): factor and SmoothFactor for integers --> FactorINT, FactorINT_TrialDiv, FactorINT_PollardRho
- I can make @factor@ and @SmoothFactor@ for integers faster in some cases by calling @IsProbPrime@.
The risk is that ... -
- Checked in the code. Also two new tests @test-NumTheory6@ and @test-SparsePolyRing3@.
No documentation yet.
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16:10 Feature #796: CoCoALib function for radical (or SqFree) of a polynomial
- John Abbott wrote:
> Currently I have used *@radical@* in CoCoALib, and *@rad@* in CoCoA-5 (to avoid a clash with th... -
- Before checking in which name should I use?
Currently I have used *@radical@* in CoCoALib, and *@rad@* in CoCoA-5 ... -
- I have an implementation in CoCoALib. It took so long because of a "mysterious bug" in @ContentFreeFactor@.
My cu... -
- The ctor args for a @DifferentialAlgebra@ are the following:
* *@n@* number of "independent variables"
* *@k@* numb...
19 Oct 2016
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- Some of Erika's people would like this to be in CoCoALib sooner rather than later!
18 Oct 2016
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- (from SC^2)
We could (easily?) implement a function doing an incremental GBasis: if I has GBasis GB, and we add a po... -
- John Abbott wrote:
> I wonder if a probabilistic approach could work. If the ideal is 0-dim, the speed is adequate.... -
- I wonder if a probabilistic approach could work. If the ideal is 0-dim, the speed is adequate. If not, perhaps we c...
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- The crude idea was just to run the usual code for computing the radical, and if at some point we determine with certa...
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- Apart from 0-dim (already implemented), and monomial, how can you determine it?
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- There is now "IsRadical" for 0-dimensional ideals. (and it's in our paper in progress ;-)
I've just realized I forg... -
- Werner and Mario ask whether it could make sense to have an @IsRadical@ function for ideals; can this be determined s...
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- This would be quite useful. For the time being should we just add...
13 Oct 2016
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- Thanks John! Now we have only the "16bytes"...
12 Oct 2016
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- I'll do @test-OrderedRing2@.... there is a leak in twinfloat.
I know where it is; now I just have to find a nice way... -
- Anna Maria Bigatti wrote:
> First run of valgrind (I had to reinstall valgrind on my mac...)
> [...]
The "16-byt... -
- First run of valgrind (I had to reinstall valgrind on my mac...)...
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- John Abbott wrote:
> Add also to check whether the CoCoA-5 tests pass with @BackwardCompatible.cpkg5@
OK, moved i... -
- Add also to check whether the CoCoA-5 tests pass with @BackwardCompatible.cpkg5@
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- Everything related to making a CoCoALib release:
# Redmine Roadmap: close or postpone issue
# Redmine Release iss...
10 Oct 2016
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- I have put this issue under CoCoALib, but it is just as relevant to CoCoA-5.
In general my personal preference is ... -
- I notice that we have the following 2 names for functions: *@intersection@* and *@saturate@*.
In CoCoA-3 and CoCoA...
08 Oct 2016
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- Unfortunately the code for reading "decimal numbers" appears twice: once in *@operator>>@* for @BigRat@ and once agai...
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- I have now implemented the following:
after @^@ there may be an unsigned integer literal or @(@ optional-sign unsign... -
- I have fixed it now, and added a new @test-RingElem5@ for the function @ReadExpr@ (for rational numbers).
Trickier...
07 Oct 2016
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- I see no choice but to make @2/3^4@ read as an expression @div(2, power(3,4))@, and this implies that all rationals e...
06 Oct 2016
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- It is a slightly subtle bug: at first sight it seems reasonable that @<constant>^<integer>@ should yield the obvious ...
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- After my change to @ReadExpr@ so that it can read rational numbers, the fn now misreads @"2/3^4"@ and produces 16/81 ...
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- Currently in MinPoly.C there is a class IncrLinDep.
It is small and neat: I think this is the perfect paradigm for a... -
- John Abbott wrote:
> What exactly do we want to allow in the exponents?
> The simplest solution would be to allow e...
05 Oct 2016
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- The relevant source is around line 100 of @RingElemInput.C@
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- What exactly do we want to allow in the exponents?
The simplest solution would be to allow either an integer liter... -
- The fn @ReadExpr@ fails if input contains an exponent which is not an integer literal: for instance...
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- I'm not sure how related this is: a twin-float value can be printed out with a trailing @<dot>@ if the value is very ...
03 Oct 2016
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- It seems that the weights must be integer. This should be documented!
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- The fns @ElimMat@ and @ElimHomogMat@ should give error if the user supplies weights are not strictly positive (intege...
30 Sep 2016
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- I tried on my old MacBook with g++-4.2, and the results were disappointing. The new class @INDEX@ was significantly ...
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- In the example code above, initially I used the name @index@ for the class (rather than @INDEX@) but that produced st...
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- Here is the test code I have been using: (functional rather than elegant)...
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- For the record, here are the timings I obtained (on the Linux tower in my office):
built-in @IdentityMat@ 1.66s
@Id... -
- I implemented a prototype, and ran a speed test. The results are mixed: usefully faster than current @MachineInt@, b...
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- Advantages:
* One hope is that the simpler implementation may allow the compiler to be clever (and optimise away alm... -
- The implementation of @MachineInt@ is a bit messy as it tries to guarantee that no information will be lost (_e.g._ a...
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- This should be easy once elim orderings are properly implemented, right?
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- Currently there is a single @configure@ script for both CoCoALib and CoCoA-5. Strictly they should be separate.
I... -
- A reasonable solution might simply to be to remove the BOOST dependent code in @ThreadsafeCounter@. This would mean ...
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- As far as I can see, the code in @ThreadsafeCounter@ will probably become much simpler when we switch to C++11 (since...
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- Currently we have a single configuration process (script) for both CoCoALib and CoCoA-5. This is not ideal!
Gereo... -
- An aspect to bear mind if we do opt to become BOOST dependent is that linking would then require linking (first) with...
29 Sep 2016
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- John Abbott wrote:
> Should @ElimMat([1,2,3], 4)@ and @ElimMat([3,2,1], 4)@ give the same result? Why or why not?
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- Should @ElimMat([1,2,3])@ and @ElimMat([3,2,1])@ give the same result? Why or why not?
In other words, does the o... -
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- I'm no longer sure what worried me so much about @ConstMatrixView@; I suspect that the new class @ConstMatrix@ has pr...
24 Sep 2016
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- Make GBasis verbose mode official (both in CoCoALib and CoCoA-5).
Requested by Tetsuo Ida -
- Since we have decided that expressions of the form @1/3*x@ deserve a warning on input, and since with genuine rationa...
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- A polynomial with TwinFloat coeffs does not put the coeffs in brackets....
22 Sep 2016
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- I've written some hasty documentation... it's better than nothing.
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- JAA continues to like the idea of @ConstMatrix@. A nice advantage compared to @ConstMatrixView@ is that an object of...
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- general improvement on coherence and readability of ElimMat and ElimHomogMat (was HomogElimMat)
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- I have not noticed this problem lately. It wouldn't surprise me to find that it is due to the "wobbly" remote file s...
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- removed TmpSmartPtrIRCCOW.H (gave warnings, and it was not used)
I saved a copy called TmpSmartPtrIRCCOW.H.dont-read... -
- when running dependencies there are lots of warnings about boost...
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- Being annoyed by this repeated message (and also thinking of any other Mac user!!) ...
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- Elisa confirmed.
21 Sep 2016
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- Improved documentation about compiling ExternalLibs (after much suffering in recompiling with clang)
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- just simplified CoCoA-5 porting (no longer passing through CoCoALibSupplement)
I'd like to change HomogElimMat into ... -
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- Works fine for me (clang)
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- This has been idle for 6 months; no problems have arisen. I have written a test (checked in).
So closing.
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- I have just written a test (@test-RingAssign1@) which needed to create some DUP rings. I was surprised to discover t...
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- I am closing (rather than rejecting) this issue. Here is a summary:
* throwing an exception is not possible (becaus... -
- Not really important, but it's nicer if the layout is correct.
Something to do when not feeling up to much... :-/
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- I noticed that the layout of the "history" at the bottom of the manual page for @MatrixView@ was incorrect. It is no...
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- After some reflection and after speaking to Anna...
I now think that @MachineInt@ is wrong for indexes; the type @Ma... -
- The function themselves work fine. The discussion now is about the implementation of the bool3 flags, which is a mor...
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