#11189: Bugfix in Poset/Lattice/Hassediagram
-------------------------------+--------------------------------------------
   Reporter:  stumpc5          |       Owner:  sage-combinat 
       Type:  PLEASE CHANGE    |      Status:  new           
   Priority:  major            |   Milestone:                
  Component:  combinatorics    |    Keywords:  poset, digraph
     Author:  Christian Stump  |    Upstream:  N/A           
   Reviewer:                   |      Merged:                
Work_issues:                   |  
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 This patch fixes two minor bugs in the poset code.

 1. LatticePoset should take the same input as Poset. E.g.,
 {{{
 sage: Poset(cover_relations=True)
 Finite poset containing 0 elements
 sage: LatticePoset(cover_relations=True)
 ...
 TypeError: LatticePoset() got an unexpected keyword argument
 'cover_relations'
 }}}

 2. The plot for posets does not properly pass the element_label dict to
 HasseDiagram.plot.

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11189>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
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