John Abbott's activity
From 07 Sep 2023 to 06 Oct 2023
05 Oct 2023
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20:17 CoCoALib 0.40 hour (Slug #1756 (In Progress): deg(f) is slow if f is long)
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20:17 CoCoALib Slug #1756: deg(f) is slow if f is long
- *ANNA!* I'd like to discuss the last comment above
03 Oct 2023
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19:14 CoCoALib 0.40 hour (Slug #1757 (New): gcd(f,f) is slow)
- RootBound is slow
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19:14 CoCoALib Slug #1757: gcd(f,f) is slow
- I have just tried computing @RootBound(f)@. It is taking ages :-( [about 360s]
No doubt the problem is that it tak... -
18:54 CoCoALib Slug #1756: deg(f) is slow if f is long
- What do we want to do if the OrdMat has a first row being all the same but not equal to 1?
The grading is StdDeg com... -
18:54 CoCoALib 0.20 hour (Slug #1756 (In Progress): deg(f) is slow if f is long)
- Ahh
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18:38 CoCoALib Slug #1756 (In Progress): deg(f) is slow if f is long
- I think I have mostly solved this issue now. Anna had already added a *@IsStdGraded@* function in 2013. I have modi...
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18:38 CoCoALib 0.50 hour (Slug #1756 (In Progress): deg(f) is slow if f is long)
- Mostly solved?
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17:10 CoCoALib Bug #1758: Graeffe "sign bug"
- A reasonable solution could be to define @GraeffeN(f,n)@ to be the same as @resultant(f(y), y-x^n)@.
This would then... -
17:10 CoCoALib 0.50 hour (Bug #1758 (Closed): Graeffe "sign bug")
- Another idea
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17:05 CoCoALib Feature #1763: implement ideal(R) for zero ideal, with no generators?
- In comment 1 I used *@EmptyList@*; in comment 2 I used *@NoGens@*
I think I dislike @EmptyList@ because it is rather... -
17:05 CoCoALib 0.20 hour (Feature #1763 (Rejected): implement ideal(R) for zero ideal, with no generators?)
- Comments?
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14:36 CoCoALib 0.50 hour (Support #1761 (Closed): MakeTermOrdMat: improve error mesg)
- Possible correction
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14:36 CoCoALib Support #1761 (In Progress): MakeTermOrdMat: improve error mesg
- Now the behaviour is as follows:...
07 Sep 2023
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11:44 CoCoALib Feature #1763: implement ideal(R) for zero ideal, with no generators?
- Here is another idea. We could create a constant empty vector of @RingElem@, and use that....
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11:44 CoCoALib 0.10 hour (Feature #1763 (Rejected): implement ideal(R) for zero ideal, with no generators?)
- Another idea
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11:37 CoCoALib 0.20 hour (Feature #1763 (Rejected): implement ideal(R) for zero ideal, with no generators?)
- JAA's comments
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11:37 CoCoALib Feature #1763: implement ideal(R) for zero ideal, with no generators?
- Mmm, don't remember... I'm still on holiday (sort of).
We can do *@ideal(zero(P))@* and *@ideal(P,EmptyList)@*.
May...
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