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From 14 Oct 2018 to 12 Nov 2018

09 Nov 2018

14:58 CoCoA-5 Feature #1231 (In Progress): system command
I have made a first attempt at implementing a "system call" function, but I am not really comprehending the structure... John Abbott

08 Nov 2018

09:58 CoCoALib Bug #1233: factor SEGV -- too large characteristic
Obviously I discovered the bug while demoing CoCoA-5 :-/
Ange would like to be able to factorize (univariate poly...
John Abbott
09:57 CoCoALib Bug #1233 (Resolved): factor SEGV -- too large characteristic
@factor@ can cause a SEGV if the characteristic is @NextProbPrime(2^31)@.... John Abbott

29 Oct 2018

18:03 CoCoALib Feature #898: New function: cardinality of finite field?
I have just noticed that *@LogCardinality@* is not implemented as I expected: it returns 0 when applied to a poly rin... John Abbott
18:00 CoCoALib Design #1232: IsPrime(0)
John Abbott wrote:
> Though I admit that @LogCardinality@ is not the most obvious name; maybe @FiniteFieldExtnDeg@ w...
Anna Maria Bigatti
17:52 CoCoALib Design #1232 (Closed): IsPrime(0)
Indeed, I probably created @IsFiniteField@ exactly for this reason. Also the correct code is clearer to read:... John Abbott
15:51 CoCoALib Design #1232: IsPrime(0)
I'd rather keep the error, as in this case you already have @IsFiniteField@.
I'm not sure whether one would expect i...
Anna Maria Bigatti
10:44 CoCoALib Design #1232 (Closed): IsPrime(0)
What should *@IsPrime(0)@* do?
Currently it gives error (because arg must be strictly positive).
I ask because ...
John Abbott

26 Oct 2018

18:41 CoCoA-5 Feature #1231: system command
I believe that Macaulay and Singular have such a command, and they use it for their interfaces.
So I do agree that w...
Anna Maria Bigatti
16:04 CoCoA-5 Feature #1231 (Closed): system command
CoCoA-4 had a *@system@* command which would pass its string argument to a shell for execution.
There is no such c...
John Abbott
15:59 CoCoA-5 Bug #724: RationalSolve: wrongly complains about non zero-dim even in finite char
The example from #723 still fails with the following error:... John Abbott

19 Oct 2018

17:19 CoCoA-5 Bug #1230 (Closed): PrimaryDecomposition with lex ordering
Robbiano reports the following problem:... John Abbott
 

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