Hi all, I'm running sage 4.7.2. While trying the matching polynomial function for graphs I found the following
sage: g=graphs.CompleteBipartiteGraph(3,3) sage: g.matching_polynomial() ... RuntimeError: Edge vertices must lie in different partitions. After reading the documentation I tried sage: g.matching_polynomial(False) x^6 - 9*x^4 + 18*x^2 - 6 And I think the problem arises when taking complement. sage: g.complement() ... RuntimeError: Edge vertices must lie in different partitions. Perhaps the complement is constructed as a bipartite graph too, which is not true in general. Thanks, Fidel -- 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
