#8913: S.cayley_graph(side = "twosided") returns broken labels
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Reporter: nthiery | Owner: nthiery
Type: defect | Status: new
Priority: major | Milestone: sage-4.4.2
Component: algebra | Keywords:
Author: Nicolas M. Thiéry | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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This patch reinstates appropriate labeling of the edges for two sided
cayley graphs::
{{{
sage: S = FiniteSemigroups().example(alphabet=('a','b'))
sage: g = S.cayley_graph(side="twosided")
sage: g.edges()
[('a', 'a', (0, 'left')), ('a', 'a', (0, 'right')), ('a', 'ab', (1,
'right')), ('a', 'ba', (1, 'left')), ('ab', 'ab', (0, 'left')), ('ab',
'ab', (0, 'right')), ('ab', 'ab', (1, 'right')), ('ab', 'ba', (1,
'left')), ('b', 'ab', (0, 'left')), ('b', 'b', (1, 'left')), ('b', 'b',
(1, 'right')), ('b', 'ba', (0, 'right')), ('ba', 'ab', (0, 'left')),
('ba', 'ba', (0, 'right')), ('ba', 'ba', (1, 'left')), ('ba', 'ba', (1,
'right'))]
}}}
This was inadvertently broken by #8044 which discarded the `left` /
`right` info.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8913>
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