Hellooooooooooooooooooooooooooooooo !!! > Don't know if this is a bug, but sage numerically disagrees with > a paper about strong product of graphs.
I would trust Sage in that case :-D > I implemented |strong_product| and don't get the same products as sage > (C_4 bound passed, the Kneser one didn't pass with my code). > > What is the drama? > > (Didn't audit sage's strong_product). Well, did you try Sage's strong_product method, or did you write your own ? Anyway, Sage can compute chromatic numbers in many different ways (see g.chromatic_number? ). I would say that if they all answer the same result then the problem lies in the product, otherwise it (obviously) lies in the coloring functions :-) Good luck ! Nathann -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
