What is the argument that makes PP(0) == 0 bad? If PP(0) is allowed, I don't see how PP(0) == 0 is particularly worse.
Because PP(AA(0)) and PP(BB(0)) should be different points, so it's not so clear which one should have precedence. PP(0) happens to choose PP(BB(0)). I don't think that's canonical enough to promote to PP(0) == 0 working as well. sage: hash(0) 0 sage: hash(ProjectiveSpace(QQ,1)(0)) 3713080549409410656 also suggests that equality is not warranted. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
