Is most of Feulner's code in Sage now?
David Joyner
It looks like Volker reviewed Feulner's tickets
http://trac.sagemath.org/ticket/13771
http://trac.sagemath.org/ticket/13726
Thanks Volker! The ticket
http://trac.sagemath.org/ticket/13398
is the only major enhancement of his that has not yet been reviewed.
Here is an example using Sage-6.2:
sage: C = codes.HammingCode(3, GF(3)).dual_code()
sage: from sage.coding.codecan.autgroup_can_label import
LinearCodeAutGroupCanLabel
sage: P = LinearCodeAutGroupCanLabel(C)
sage: P.get_canonical_form().gen_mat()
[1 0 0 0 0 1 1 1 1 1 1 1 1]
[0 1 0 1 1 0 0 1 1 2 2 1 2]
[0 0 1 1 2 1 2 1 2 1 2 0 0]
sage: P.get_autom_order()
11232
sage: A = [a.get_perm() for a in P.get_autom_gens()]
sage: A
[[6, 8, 9, 2, 11, 3, 4, 12, 5, 13, 10, 1, 7],
[12, 9, 11, 1, 3, 8, 7, 6, 2, 5, 10, 13, 4],
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]]
sage: H = SymmetricGroup(13).subgroup(A)
sage: H
Subgroup of (Symmetric group of order 13! as a permutation group)
generated by [(), (1,6,3,9,5,11,10,13,7,4,2,8,12),
(1,12,13,4)(2,9)(3,11,10,5)(6,8)]
- David
thomas....@uni-bayreuth.de
> Hi all:
>
>
>
> It looks like Volker reviewed Feulner's tickets
>
> http://trac.sagemath.org/ticket/13771
>
> http://trac.sagemath.org/ticket/13726
>
> Thanks Volker! The ticket
>
> http://trac.sagemath.org/ticket/13398
>
> is the only major enhancement of his that has not yet been reviewed.
>
>
Yes, thanks to Volker's help, my algorithm for the computation of unique representatives of linear codes over finite fields has made it into Sage.
The ticket 13398 hasn't been maintained for a while. But the code is part my Sage package
http://www.computeralgebra.uni-bayreuth.de/de/team/Feulner_Thomas/codecan-1_1_spkg.zip,
which allows for the computation of canonical forms and automorphism groups of ring-linear codes.
I would like to publish this package on the official Sage website as well, but I am afraid that it has to be moved to the git-based workflow first. I was hoping, someone could assist me with this task?
Thomas
Dima Pasechnik
Actually, I am not sure whether is has been decided not to accept the oldstyle packages any more.;
However, the new setup is more natural. You create an "upstream" tarball, and the Sage-specific part lives in build/pkgs/<package name>. Only the latter is under git revision control.
A new part is creation of the checksum, to match the latter stuff with the tarball.
IMHO it is quite well explained in the developer guide.
HTH,
Dima
>
> Thomas
>
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