Activity

From 24 Apr 2023 to 23 May 2023

19:09 Design #1744: Implement GBMill (aka Groebner Framework): A possible advantage of using "funny" indet names is that it is then clear that the value does not belong to the orig... John Abbott
16:58 Design #1744 (In Progress): Implement GBMill (aka Groebner Framework): The computation of a GBasis is the core computation of many others (colon, saturation, homogenization, ...).
Such GB... Anna Maria Bigatti

22:05 Design #1744: Implement GBMill (aka Groebner Framework): I would also like to be able to perform a GB computation in chunks determined by a time-out. It may suffice to have ... John Abbott
22:03 Design #1744: Implement GBMill (aka Groebner Framework): There should probably be a "graded" mode, and then the possibility to know whether the partial/truncated basis is com... John Abbott
15:47 Design #1744 (In Progress): Implement GBMill (aka Groebner Framework): Investigate and design about converting current "Buchberger"'s code into a GBMill, i.e. a class containing partial co... Anna Maria Bigatti
15:42 Feature #1743 (New): Implement Truncated GBases for homogeneous input: Truncated GBases can be quite useful.
Find a way to implement them without duplicating to much code.
Ideally we sho... Anna Maria Bigatti

13:44 Feature #1742 (New): MinGens could be faster: When asking for MinGens with homogeneous input, we do not need to compute the whole GBasis, not even to make pairs wh... Anna Maria Bigatti
12:53 Bug #1740: MinGens gives non minimal gens *if some deg=0*: New smallest example: I doubt I can beat this ;-)... Anna Maria Bigatti

09:24 Slug #967: Improve saturate: My suggestion above is not quite right.
The poly which I am saturating with respect to must be reduced modulo @I@.
... John Abbott

20:32 Slug #967: Improve saturate: Let @P@ be a poly ring with indets @x[1]..x[n]@ and @y[1]..y[m]@.
Suppose the gens of ideal @I@ involve only @x@ ind... John Abbott

16:24 Bug #1740: MinGens gives non minimal gens *if some deg=0*: smaller... Anna Maria Bigatti
08:03 Feature #1654: New function IsInSymbols: See function... Anna Maria Bigatti
07:24 Feature #1654: New function IsInSymbols: John Abbott wrote:
> Anna, could you please describe more explicitly what you are proposing?
> I am not sure I unde... Anna Maria Bigatti

08:54 Bug #1740: MinGens gives non minimal gens *if some deg=0*: I wonder if it could be made to work by assuming that all indets with weight 0 actually have epsilon (an infinitesima... John Abbott

11:51 Bug #1740: MinGens gives non minimal gens *if some deg=0*: This example was generated by simplifying the original big example found by L.Robbiano Anna Maria Bigatti
11:49 Bug #1740 (In Progress): MinGens gives non minimal gens *if some deg=0*: In this example MinGens gives a result which is not minimal.
Can the algorithm MinGens work if the input is homogene... Anna Maria Bigatti
09:31 Slug #1739 (Closed): IsHomog for ideals: the function IsHomog for ideals might take a long time computing a GBasis, but if
the check @IsHomog(gens(I))@ gives... Anna Maria Bigatti
08:47 Design #1738: Suggestion about Graded polynomial rings: Sounds interesting: this is surely handy for "human handling".
Maybe the homogenizing ring could be created the firs... Anna Maria Bigatti

22:32 Design #1738: Suggestion about Graded polynomial rings: In CoCoA a poly ring has default term-order @degrevlex@ which we regard as 1-graded.
My suggestion means that by def... John Abbott
22:29 Design #1738 (New): Suggestion about Graded polynomial rings: If the user creates a graded polynomial ring, maybe CoCoA could actually create 2 polynomial rings:
* the one reques... John Abbott

12:50 Slug #1737 (In Progress): Homogenization of an ideal with ZZ^1-grading: (1) With a ZZ^1-grading I think it is enough to compute a "wdeg-rev" ReducedGBasis then "saturate" each element indep... John Abbott

16:01 Design #1736: Clean TmpGOperations, and remove Tmp prefix: I had to look in to *@TmpGoperations.C@* to find out about how CoCoALib implements ideal homogenization (and saturati... John Abbott
15:58 Design #1736 (New): Clean TmpGOperations, and remove Tmp prefix: How stable/clean is the code in *@TmpGOperations@*?
It forms a fairly central part of CoCoALib (and thus of CoCoA-5)... John Abbott

21:31 Design #1735: PushFront/PushBack without checks?: The suggestion arose from some new code for computing cyclotomic polynomials.
The coeff vec is computed quite quickl... John Abbott
21:29 Design #1735 (Rejected): PushFront/PushBack without checks?: Currently @PushFront@ and @PushBack@ check their args (correct coeffring, correct ppmonoid).
Should there also be un... John Abbott

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