CoCoA » CoCoALib

21 Nov 2013

19:14 Bug #413 (Closed): OrdvArith: use of a single buffer is NOT THREADSAFE

Fix @OrdvArith@ fns so that they are threadsafe; at the moment they use a single buffer (@myOrdvBuffer@ and @myExpvBu... John Abbott

15:43 Feature #407: RingElem ctor from mpz_t (from Bruns)

We could define a ctor which needs an extra "marker" parameter to resolve the ambiguity in the call @BigInt(R,0)@ bet... John Abbott

20 Nov 2013

19:58 Feature #233: AsINT and AsRAT -- ConvertTo<BigInt> and ConvertTo<BigRat>

An advantage of Anna's suggested names is that they are more compact than using the @ConvertTo@ template fn.
JAA s... John Abbott

19:51 Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))

@PushFront@ and @PushBack@ for PPs have already been implemented (no idea when), but they were not documented. I hav... John Abbott

30 Oct 2013

21:43 Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))

I, too, favour proposal (1):
* it is far simpler to implement
* it is simple to understand the restriction
* it shoul... John Abbott

19:04 Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))

Dear Anna,
I agree that (1) is the better choice. Given that PushBack copies the exponent vector, I think it is th... Winfried Bruns

18:50 Feature #342 (In Progress): Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))

Winfried Bruns wrote:
> In my version of QQ[x] -> Z[x] I am using PushBack to build the target polynomial (also for ... Anna Maria Bigatti

13:32 Feature #342: Remove denominators: QQ[x] -> ZZ[x] (and PushBack(coeff, PP))

This is the first i am using redmine actively.
In my version of QQ[x] -> Z[x] I am using PushBack to build the tar... Winfried Bruns

10:52 Bug #355 (Closed): Colon of zero ideal fails (zero-divisors)

Anna Maria Bigatti

10:05 Bug #355: Colon of zero ideal fails (zero-divisors)

all fixed (it didn't like to have a 0 in the divisor's generators).
Meanwhile @IsZeroDivisor@ has been implemented a... Anna Maria Bigatti

29 Oct 2013

15:35 Feature #150: RingOf rather than owner? (and than AmbientRing, ...)

*POSSIBLE DISADVANTAGE* Using names such as @RingOf@, @PPMOf@ (rather than having a single name) could make template ... John Abbott

14:48 Feature #356 (Closed): IsZeroDivisor

... Anna Maria Bigatti

14:30 Feature #390 (Closed): Store unique copy of QQ[t_1..t_n] (RingQQt) in GlobalManager

Anna Maria Bigatti

14:25 Bug #178 (Closed): IsHomog: should it throw an error when there is no grading?

Anna Maria Bigatti

13:50 Feature #312: LongRange(a,b) returning vector of long a..b (included)

John Abbott wrote:
> It might be worth moving the impl into its own *separate file*: this would remove the need to i... Anna Maria Bigatti

13:45 Feature #215 (Feedback): Janet Bases: check and include code in CoCoALib (first prototype)

The general task is fully done.
Yet to do: add JB field in ideal in cocoalib, and consequent functions in cocoa-5 Anna Maria Bigatti

13:39 Bug #349 (Closed): IdealOfPoints: gens are actually a GBasis

Anna Maria Bigatti

13:33 Bug #335 (Closed): Equality of (sub)modules

Anna Maria Bigatti

13:28 Design #411 (Feedback): design of factorization template class

Anna Maria Bigatti

24 Oct 2013

14:56 Design #411: design of factorization template class

> Currently JAA prefers method (A) because:
> # it's already impl'ed, so no extra work needed
> # it is easier to u... Anna Maria Bigatti

23 Oct 2013

20:50 Feature #39 (Feedback): Squarefree factorization

The issue has been resolved by implementing Bernardin's algm (which seems to work quite well in practice).
The code ... John Abbott

20:46 Feature #42 (Closed): Squarefree factorization - generic case

Not sure how good an idea it is to have the generic fn.
Anyway there is already @SqfreeFactor_generic@.
Closing t... John Abbott

20:41 Feature #40 (Closed): Squarefree factorization - Alessio d'Ali`

JAA has now ported d'Ali's code into CoCoALib (and added doc & tests).
Closing this issue.
John Abbott

20:37 Feature #41 (Closed): Squarefree factorization - overhead

Task is essentially finished now that d'Ali's code has been ported.
Closing.
John Abbott

20:34 Feature #43 (Closed): Squarefree factorization - for polynomials

This entire task subtree was effectively resolved by the porting of d'Ali's impl of Bernardin's algm (see #47).
Th... John Abbott

20:31 Feature #44 (Closed): Squarefree factorization - univariate polynomials

The multivariate code (port of d'Ali's impl of Bernardin's algm) also handles the univariate case, and seems to be fa... John Abbott

20:26 Feature #45 (Closed): Squarefree factorization - univariate polynomials, char 0

This is effectively covered by the port of d'Ali's impl of Bernardin's (multivariate) algm. Efficiency of the multiv... John Abbott

20:23 Feature #46 (Closed): Squarefree factorization - univariate polynomials, char p > 0

This task is already handled by the port of d'Ali's impl of Bernardin's algm.
John Abbott

20:10 Feature #48 (Closed): Squarefree factorization - multivariate polynomials, char 0

This case is effectively covered by the porting of d'Ali's code.
Might still need some tweaking to handle "strange... John Abbott

20:06 Feature #49 (Closed): Squarefree factorization - multivariate polynomials, char p > 0

This case is already dealt with by the porting of d'Ali's code (see #47).
John Abbott

15:32 Feature #47: Squarefree factorization - multivariate polynomials

Translation of d'Ali's impl is now complete.
Code has been checked in; incl doc and tests.
Some minor points remain ... John Abbott

14:42 Design #411 (In Progress): design of factorization template class

Once this matter is resolved, we can change the file @TmpFactor@ into @factor@; strictly the @Tmp@ prefix should have... John Abbott

14:28 Design #411: design of factorization template class

This question arose because I have just implemented @SqfreeFactor@, and thought that it might be nice to guarantee th... John Abbott

12:54 Design #411 (Closed): design of factorization template class

Which is the better of the following two ways of implementing the factorization class?
(A) the current impl
* rec... John Abbott

12:42 Support #391 (In Progress): Check consistency of template class factorization

I noticed yesterday that there is a fn @ourCheckConsistency@ for factorizations.
This probably does what is needed -... John Abbott