#14394: FaceFan bug if origin is on boundary
---------------------------+------------------------------------------------
   Reporter:  vbraun       |             Owner:  mhampton
       Type:  enhancement  |            Status:  new     
   Priority:  major        |         Milestone:  sage-5.9
  Component:  geometry     |          Keywords:          
Work issues:               |   Report Upstream:  N/A     
  Reviewers:               |           Authors:          
  Merged in:               |      Dependencies:          
   Stopgaps:               |  
---------------------------+------------------------------------------------
 If the origin is on the boundary of the polytope then !FaceFan fails to
 raise an appropriate error:
 {{{
 sage: FaceFan(Polyhedron([(-1,0), (1,0), (0,1)])).generating_cones()
 (2-d cone of Rational polyhedral fan in 2-d lattice N,
  1-d cone of Rational polyhedral fan in 2-d lattice N,
  2-d cone of Rational polyhedral fan in 2-d lattice N)
 }}}

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14394>
Sage <http://www.sagemath.org>
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