#16985: Poset: Faster is_selfdual()
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-wishlist
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/poset__faster_is_dual__|
ef4707bad72ee6a544a816092aed84e6b988fb87
Dependencies: | Stopgaps:
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Comment (by ncohen):
> Hmm, actually it seems that only `reverse()` is needed. There is no need
at all to calculate full dual with element labels. Got to think about this
tomorrow.
{{{
sage: Poset(DiGraph({0:[],1:[2]})).level_sets()
[[1, 0], [2]]
sage: Poset(DiGraph({0:[],1:[2]})).dual().level_sets()
[[0, 2], [1]]
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/16985#comment:10>
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