#19737: SetPartition.to_permutation().cycle_tuples() is not the identity
-------------------------------------+-------------------------------------
Reporter: mantepse | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-7.0
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: |
-------------------------------------+-------------------------------------
Changes (by dimpase):
* status: needs_review => needs_work
Comment:
{{{
sage: s=SetPartition([[0,1,2],[3,4]])
sage: s.to_permutation()
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
...
ValueError: All elements should be strictly positive integers, and I just
found a negative one.
}}}
even 0 is negative in this code...
--
Ticket URL: <http://trac.sagemath.org/ticket/19737#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
