Activity
From 01 May 2024 to 30 May 2024
30 May 2024
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17:43 Feature #1819 (In Progress): New functions in CoCoALib using GBasisTrunc: MinSubsetOfGens, IsContainedTrunc, ..
- We have in CoCoA-5
+ MinSubsetOfGens
+ IsContainedTrunc(I,J)
using GBasisTrunc (if homogenous and not(HasGBasis(J)... -
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- A clever implementation is difficult/impossible.
However, the new @GBasisTrunc@ (which also works for non-negative g... -
- This is how the usual MinGens labelling can go horribly wrong with *non-negative* gradings:
S := NewPolyRingWeight... -
- There was a bug in GBasisTrunc, now fixed.
These functions are in CoCoA-5. Port them to CoCoALib:
+ MinSubsetOfG... -
- Resolved using truncation (works also for non-negative gradings)
28 May 2024
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- When we multiply or divide a polynomial by a coefficient, we can use myMulByCoeff/myDivByCoeff.
This is actually che... -
- Is this valid now? something along this lines is valid.
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- First step would be to kill definitely all the code for the dynamic GBasis.
It is sad to do so, but I have no idea h... -
- John Abbott wrote:
> *THIS* could be a good goal for version 1.0. Do we have enough resources to achieve that?
I... -
- MinGens now truncates to the max degree of the generators.
Can be considerably faster than before, of course.
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- Implemented.
Meanwhile I made a few tiny changes in the direction of the Framework/Mill.
Tested, seems fine.
Now...
27 May 2024
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19:27 Design #1744: Implement GBMill (aka Groebner Framework)
- *THIS* could be a good goal for version 1.0. Do we have enough resources to achieve that?
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- One crucial starting point is making a proper constructor for GRingInfo.
Currently the constructor has many argument...
25 May 2024
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02:13 Feature #1667: GBasis over ZZ: port to CoCoALib
- That is the idea. We just have to understand who will be the authors and what should be done before submitting. I bel...
24 May 2024
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- While trying to understand how to work around this, I resumed the partial minimalization with the function @MinGens_a...
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- John Abbott wrote:
> Or *@myRestart@*?
@myReset@ is myFavourite ;-) -
- Or *@myRestart@*?
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- Done, together with Evelina Lanteri.
We used LinDepMill and QBGenerator: worked very well.
Still to decide: user in... -
- Implement FGLM algorithm for 0-dim ideals
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- Many years have passed. This class has been thoroughly used/tested.
It is used in the functions @ShapeLemma@ and @F... -
- John Abbott wrote:
> The CoCoA-5 version is in @*prototype-GBZZ.cpkg5@*.
> I tried just one test, and the CoCoA-5 c... -
- Anna has raised some points to consider (related to the last comment above which creates many poly rings)
* *Qn* eac... -
- I have made a first throwaway prototype, mostly to learn about the foibles of the OSCAR/MaRDI JSON format.
I am wo... -
- Build a good first version of an interface for sending/receiving OSCAR/MaRDI JSON serializations of mathematical obje...
23 May 2024
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- Wolfram Decker would like to have a way of handling the rings involved in projective geometry: namely 1 "homogeneous"...
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- I have updated the expected output of 2 @src/tests/@
Thanks for fixing this so quickly!
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- This is fine for me:...
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- Now it prints...
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- Follow up:
Me: no, we don't.
In fact, this highlights there is a different underlying implementation.
This is no... -
- From email by John Abbott:...
20 May 2024
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- We have GBasis code for poly ideals over ZZ, so make it work with these ideals.
More failing operations:... -
- Can we close this soon?
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- How to compute the GCD of x^e1 * g1(x^d1) and x^e2 * g2(x^d2)?
Is it just x^min(e1,e2) * gcd(g1(x^D1), g2(x^D2))[x... -
- I am strongly tempted to postpone this until after we reach version 1.0.
Pros: putting the sources on GitHub (or s...
09 May 2024
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- The interface in OSCAR lets the caller choose where the "new" indeterminates appear in the list of indets of the bigg...
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- The CoCoA-5 version is in @*prototype-GBZZ.cpkg5@*.
I tried just one test, and the CoCoA-5 code was noticeably faste...
02 May 2024
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- Another point to bear in mind is the licence of any library.
We already use BOOST in CoCoA-5, but I'm not sure wheth... -
- I note the following link(s):
* *@https://www.boost.org/doc/libs/1_85_0/libs/json/doc/html/json/comparison.html@*
*... -
- We should also decide which goals we have.
I'm expecting in Berlin to spend much of the time discussing and planni... -
- Antony in Berlin says that they use *@rapidJSON@*; I did not enquire about UUIDs -- we can use an interim, makeshift ...
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- Investigate including a library for serializing and deserializing JSON encodings.
This includes having the ability t...
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