This issue is #20391 on trac, and was supposed to have been resolved by #18916 (which is fixed in sage 7.4). But it looks like it's not, even though the similar test case:
sage: x = polygen(GF(4099)) sage: H = HyperellipticCurve(x^6 + x + 1) sage: H.count_points(1) that I had been using does now work. Kiran On Sunday, October 9, 2016 at 10:06:06 AM UTC-7, John Cremona wrote: > > I have not before now used Sage to count points on hyperelliptic > curves over finite fields, only elliptic curves. Am I doing something > wrong or is this a bug? It certainly looks like a bug. > > sage: F=GF(23) > sage: x=polygen(F) > sage: C=HyperellipticCurve(x^8+1) > sage: C.cardinality() > ... > ValueError: Q must be a monic polynomial of odd degree >= 3 > > According to C.count_points_exhaustive() the answer is 24. > > John Cremona > -- 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 sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
