Weird. This does not happen on my laptop (32-bit arch linux -- you didn't think I would put up a patch without doctesting did you? :)
But I am definitely getting this on sage.math. I'll try to see what I can do about it. Alex On Mon, Apr 27, 2009 at 9:20 PM, John Cremona <john.crem...@gmail.com> wrote: > > This looks pretty nasty: > > sage: Fx.<b>=GF(2^(4*5)) > sage: Ex=EllipticCurve(Fx,[0,0,1,1,1]) > sage: Ex.defining_polynomial() > x^3 + y^2*z + 0*x*z^2 + 0*y*z^2 + 0*z^3 > > (note the coefficients of zero). > > I found this while reviewing #5765 but the above is in a vanilla > 3.4.2.alpha0, and it is wrong; though this was only revealed by #5765 > which changed the method for verifying that a point lies on a curve > from something which uses the a-invariants directly to a general > scheme function which uses the defining polynomial. This causes > elliptic_curves/ell_point.py to fail. So the bug might have been > around for a while. > > John > -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
