#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 ncohen):
Yoooooooooo !!
> Damned, I missed this.
Looks like I added you to the Cc when I created the ticket, though. And
Florent, too.
> The list method is important! It gives the permutation in list notation,
and I am using it in my class tomorrow!
Yeah well, you may need it and everything but it isn't even defined
properly.
> Ok, the meaning is a bit dubious when the domain is any set
DUBIOUS ? Come on, it has no meaning whatsoever. Other than what "domain"
returns.
> but I guess the following semantic would make sense:
>
> - domain(): returns self.parent().domain() (if at all needed)
> - list(): returns [self(i) for i in self.parent().domain()]
> - tuple(): returns tuple(self.list())
>
> If you agree with the above, I'll create a new ticket. And ignore the
warning in class tomorrow ...
Why don't you just add some lines to the constructor of `Permutation` ?
You could just write `p = Permutation(your_permutation_group_element)`.
That would have a meaning.
What would a `.list()` function do in `PermutationGroupElement` otherwise
? Hell, what does `.tuple()` do there too ? It's not like
`tuple(a.domain())` is so long that it needs a function of its own `O_o`
Nathann
--
Ticket URL: <http://trac.sagemath.org/ticket/14319#comment:49>
Sage <http://www.sagemath.org>
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