#8386: enhanced version of iet
--------------------------------------+-------------------------------------
Reporter: vdelecroix | Owner: vdelecroix
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.6
Component: combinatorics | Resolution:
Keywords: iet, combinatorics | Work issues: startup problem
Report Upstream: N/A | Reviewers: Frédéric Chapoton
Authors: Vincent Delecroix | Merged in:
Dependencies: #12643, #13677 | Stopgaps:
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Old description:
> 1) The library for iet is moved from sage.combinat.iet to
> sage.dynamics.interval_exchanges which seems more natural.
>
> 2) The old version for iet uses two kinds of datatype for reduced and
> labeled versions. The new implementation makes them coherent.
>
> 3) As a by product of 2), the following behavior is corrected
> {{{
> sage: p = iet.Permutation('a b','b a')
> sage: q = iet.Permutation('b a','a b')
> sage: p == q
> True
> }}}
>
> Apply only [attachment:trac_8386-enhanced_iet.v2.patch]
New description:
1) The library for iet is moved from sage.combinat.iet to
sage.dynamics.interval_exchanges which seems more natural.
2) The old version for iet uses two kinds of datatype for reduced and
labeled versions. The new implementation makes them coherent.
3) As a by product of 2), the following behavior is corrected
{{{
sage: p = iet.Permutation('a b','b a')
sage: q = iet.Permutation('b a','a b')
sage: p == q
True
}}}
Apply only [attachment:trac_8386-enhanced_iet.v3.patch]
--
Comment (by chapoton):
I have rebased on 5.5rc0.
I hope I have not made a mistake in doing that
Apply trac_8386-enhanced_iet.v3.patch
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8386#comment:20>
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