The output in sage of the function: Graph([[1,1]],multiedges=True,loops=True).chromatic_polynomial()
(the chromatic polynomial of a vertex with a loop) is: x but it seems to me that, if graphs with loops are allowed, then it should be 0 as there is no proper coloring -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-support. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/be688b63-9ecc-452c-b31c-b5831cc4eadd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
