#17138: LatticePoset: complements() is broken
-------------------------------------+-------------------------------------
Reporter: jmantysalo | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Jori Mäntysalo | Reviewers: Nathann Cohen
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/latticeposet__complements___is_broken|
8b4668325a50621a579d59477ef792590304fb44
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by vbraun):
* status: positive_review => needs_work
Comment:
Int/string have no stable sort order:
{{{
sage -t --long src/sage/combinat/posets/lattices.py
**********************************************************************
File "src/sage/combinat/posets/lattices.py", line 433, in
sage.combinat.posets.lattices.FiniteLatticePoset.complements
Failed example:
L.complements()
Expected:
{0: [1], 1: [0], 'a': ['b', 'c'], 'b': ['c', 'a'], 'c': ['b', 'a']}
Got:
{'a': ['b', 'c'], 'b': ['c', 'a'], 'c': ['b', 'a'], 0: [1], 1: [0]}
**********************************************************************
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/17138#comment:11>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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