#14319: Automorphism group with labeled vertices
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Reporter: ncohen | Owner: jason,
Type: enhancement | ncohen, rlm
Priority: major | Status: closed
Component: graph theory | Milestone: sage-5.10
Keywords: | Resolution: fixed
Authors: Nathann Cohen | Merged in:
Report Upstream: N/A | sage-5.10.beta2
Branch: | Reviewers: Volker
Dependencies: #14291, #14250, #14477, | Braun
#14435 | Work issues:
| Commit:
| Stopgaps:
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Comment (by nthiery):
Replying to [comment:49 ncohen]:
> Looks like I added you to the Cc when I created the ticket, though. And
Florent, too.
Sure, I take the blame for not spotting this and suggesting something
different back then.
> DUBIOUS ? Come on, it has no meaning whatsoever. Other than what
"domain" returns.
Yes it does! When the domain is 1...n it gives you the permutation in
the usual list notation, which is a basic feature! And otherwise it
still shows how the elements of the domain are permuted which is a
worthwhile information; it does not seem ridiculous to me to do:
{{{
sage: for sigma in SymmetricGroup(['a','b','c']): print sigma.list()
['a', 'b', 'c']
['a', 'c', 'b']
['b', 'a', 'c']
['b', 'c', 'a']
['c', 'a', 'b']
['c', 'b', 'a']
}}}
If there is something to be contested it's that self.domain() returns
the domain with its elements permuted; I would just return the domain
of the parent (like other functions do in Sage).
--
Ticket URL: <http://trac.sagemath.org/ticket/14319#comment:50>
Sage <http://www.sagemath.org>
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