#18516: Posets: canonical_label() returns a poset from lattice
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       Reporter:  jmantysalo         |        Owner:
           Type:  defect             |       Status:  needs_info
       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/posets__canonical_label___returns_a_poset_from_lattice|  
c742ca4204a252d2ebebe4a2dd6d037469f019c4
   Dependencies:                     |     Stopgaps:
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Comment (by jmantysalo):

 OK. But actually... How is `self.canonical_label()` different from
 `Poset(self._hasse_diagram, linear_extension=self._with_linear_extension,
 category=self.category(), facade=self._is_facade)`? I.e. when is canonical
 label of Hasse diagram not already on canonically numbered?

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Ticket URL: <http://trac.sagemath.org/ticket/18516#comment:7>
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