#13874: Allow automorphism of groups to work on the original vertex set
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Reporter: azi | Owner: jason, ncohen, rlm
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.6
Component: graph theory | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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The current implementation of the automorphism group of a graph always
relabels the graph in question to use the vertex set $1,2,...,$ and then
returns the automorphism group based on this labelling and potentially a
translation for the labelling as well.
Needless to say that this is time consuming, confusing and also prone to
bugs since if one uses integers as labels (starting at 0 for example) the
relabelling might go unnoticed.
As it appears from [https://groups.google.com/forum/?fromgroups=#!topic
/sage-devel/wLtbNpeYrok this] sage-devel post it is now possible to use
arbitrary domains for permutation groups.
Hence, it would be nice to integrate this change into the
automorphism_group function as well.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13874>
Sage <http://www.sagemath.org>
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