#10153: Canonical generator matrices for linear codes and their automorphism
groups
------------------------------+---------------------------------------------
Reporter: tfeulner | Owner: wdj
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.6.1
Component: coding theory | Keywords: Automorpism group, canonical
representative
Author: Thomas Feulner | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
------------------------------+---------------------------------------------
Changes (by wdj):
* status: new => needs_work
Comment:
This applied fine to sage 4.6.1.a2 on a 10.6.5 mac, however there were
some compiler warnings of the form
"warning: command line option "-Wstrict-prototypes" is valid for C/ObjC
but not for C++".
I don't know if these are important. The patch passes sage -testall.
The patch is huge. I have the following questions:
1) Do you have any tests which compare your output to the output of Robert
Miller's
automorphism groups in the case of binary linear codes? For example, does
your
program yield the same result that
sage: C = HammingCode(3, GF(2))
sage: C.automorphism_group_binary_code()
does?
2) Do you have any tests which compare your output to the output of the
permutation
automorphism groups in the case of non-binary linear codes? For example,
does your program yield the same result that
sage: C = HammingCode(2, GF(3))
sage: C.permutation_automorphism_group()
Permutation Group with generators [(1,2,3)]
does?
It seems not. If that is true, it would be great to add them to the
tests.
Also, it is great that you linked your documentation into the manual.
However, most of it is too vague - for example
{{{
get_transporter()
Returns the transporter element.
...
}}}
Could this be improved?
I'm going to mark this as "needs work".
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10153#comment:4>
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