#18562: LatticePoset: add random_maximal_sublattice()
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.8
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Jori Mäntysalo | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/latticeposet__add_random_maximal_sublattice__|
8cec35752ad348fc146a59c1701a87b25a37b588
Dependencies: | Stopgaps:
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Changes (by jmantysalo):
* status: needs_work => needs_review
Comment:
Ready for review.
This is not perfect. For a bad example take
{{{
M3sub=LatticePoset({'a': [1,2,3], 1:['v', 4], 2:[4,'k'], 3:['o',4], 4:[5],
5:[6,13], 6:[7,11], 7:[8,14], 8:[9,12], 9:[10,15], 10:['y'], 'v':[11],
11:[12], 12:['y'], 'o':[13], 13:[14], 14:[15], 15:['y'], 'k':[10]})
}}}
that has 5-element sublattice that is very rarely returned from this
function.
--
Ticket URL: <http://trac.sagemath.org/ticket/18562#comment:9>
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