Hi, In some work on isogeny clases, my team ran across the following of two elliptic curves which are isogenous but sage reports different isogeny classes for them. Is there some technicalities (j = 0) leading to incorrect output or is this something that we should flag a bug?
sage: L5.<r5> = NumberField(x^2-5) sage: E = EllipticCurve(L5,[287275052073119826051072\*r5-642366544675288047943680,-125329261653845158603060848774610944\*r5+280244748627855491701953075326484480]) sage: F = EllipticCurve(L5,[0,-4325477943600\*r5-4195572876000]) sage: E.isogeny_class().matrix() [ 1 25 75 3 5 15] [25 1 3 75 5 15] [75 3 1 25 15 5] [ 3 75 25 1 15 5] [ 5 5 15 15 1 3] [15 15 5 5 3 1] sage: F.isogeny_class().matrix() [1 3] [3 1] sage: E.is_isogenous(F) True Best, Lance -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/a78bba45-9ec5-4df3-8233-b39920d8c28dn%40googlegroups.com.
