Hello, I have discovered that a fan consisting only of the origin cannot compute its cone lattice due to the following behaviour:
sage: G = DiGraph(1) sage: print G Digraph on 1 vertex sage: P = Poset(G) sage: print P Finite poset containing 1 elements sage: print P.bottom() 0 sage: print P.top() None Is it a bug? It seems to me that 0 in this case is both top and bottom and the minimal and the maximal element. Thank you! Andrey -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
