A report from Lee Morgenstern using SageMathCell running Sage 6.9.beta6, but the same happens in 6.10:
the following code produces NTLError: RR: division by zero m = 239; n = 48 X = 2*m*n; Y = m^2 - n^2; Z = m^2 + n^2 E = EllipticCurve([0, 2*(Z^2-X*Y), 0, (X*Y)^2, 0]) E.rank() The same error also happens with E.gens(), but takes longer to get it. But if you use E.gens(descent_second_limit=9) you can get the error sooner. -- 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.
