#19737: SetPartition.to_permutation().cycle_tuples() is not the identity
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Reporter: mantepse | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.11
Component: combinatorics | Resolution:
Keywords: set partitions, | Merged in:
permutations | Reviewers:
Authors: Martin Rubey | Work issues:
Report Upstream: N/A | Commit:
Branch: | 7d20d99b2d4b969b4ea2aa00cc71d279deeffbf4
u/mantepse/setpartition_to_permutation___cycle_tuples___is_not_the_identity|
Stopgaps:
Dependencies: |
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Comment (by ncohen):
I just wrote to sage-devel. I do not see how `to_permutation` can be
properly defined on this class of objects. In particular it raises an
exception whenever the ground set of the `SetPartition` object is not a
set of integers.
https://groups.google.com/d/topic/sage-devel/OpwJoAza5OY/discussion
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/19737#comment:6>
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