#19191: LatticePoset: add is_planar()
-------------------------------------+-------------------------------------
       Reporter:  jmantysalo         |        Owner:
           Type:  enhancement        |       Status:  positive_review
       Priority:  major              |    Milestone:  sage-6.9
      Component:  combinatorics      |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Nathann Cohen,     |    Reviewers:  Jori Mäntysalo,
  Jori Mäntysalo                     |  Nathann Cohen
Report Upstream:  N/A                |  Work issues:
         Branch:  u/ncohen/19191     |       Commit:
   Dependencies:  #19193             |  52a657ffca7acde0f622daffdbf0c066ea60887c
                                     |     Stopgaps:
-------------------------------------+-------------------------------------
Changes (by jmantysalo):

 * status:  needs_review => positive_review
 * dependencies:   => #19193


Old description:

> Add `is_planar()` to `LatticePoset`. See
> http://www.sciencedirect.com/science/article/pii/0095895676900241 for
> definition. Add it to index of functions in #19190.

New description:

 Add `is_planar()` to `LatticePoset`. See
 http://www.sciencedirect.com/science/article/pii/0095895676900241 for
 definition.

--

Comment:

 Duh, an example still depends on #19193. Added that. Now this seems to
 ready to go.

--
Ticket URL: <http://trac.sagemath.org/ticket/19191#comment:33>
Sage <http://www.sagemath.org>
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