#17138: LatticePoset: complements() is broken
-------------------------------------+-------------------------------------
       Reporter:  jmantysalo         |        Owner:
           Type:  defect             |       Status:  positive_review
       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:
  public/latticeposet__complements___is_broken|  
cf4f72988a9910e9e64bbef4653524b59af5c67b
   Dependencies:                     |     Stopgaps:
-------------------------------------+-------------------------------------

Comment (by jmantysalo):

 Thanks Volker. From the user perspective I think that `do_something() -->
 some_output` is much better example than `do_something()==some_output -->
 True`.

 I was thinking about usual convention of having `0` and `1` as bottom and
 top element of a lattice. Maybe `'0'` instead of `0` is better. I will
 think this later (but polishind documentation on posets will go before
 lattices). For now this can be as it is.

--
Ticket URL: <http://trac.sagemath.org/ticket/17138#comment:23>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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