Hi, the following seems suspicious to me: sage: M = matrix(2,[1,3,2,0]) sage: G = DiGraph(M, loops=True, multiedges=True) sage: H = DiGraph(M.transpose(), loops=True, multiedges=True) sage: G.is_isomorphic(H) True
Strangely enough, this works fine: sage: M = matrix(2,[1,3,1,0]) sage: G = DiGraph(M, loops=True, multiedges=True) sage: H = DiGraph(M.transpose(), loops=True, multiedges=True) sage: G.is_isomorphic(H) False -- -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
