I tried to convert 2*x*y^2 + 2*a5*t*x*y - x^2 + (2*a4 - 8*t^3)*x - 1, where a4, a5, and t are some complex parameters (which I would like to keep as undetermined parameters), to Weierstrass normal form using Nagell's algorithm and was not quite successful since some steps near the end do not finish in a reasonable time (i.e. a few minutes). It is possible that I have done some mistakes, since I didn't really tested my code yet, but Jacob Lewis told me that this algorithm isn't very fast anyway.
As far as I can tell, Sage can do this conversion using MAGMA, but only over rational field. Can anyone recommend an efficient way of doing such a conversion with symbolic coefficients? Or, perhaps, it is already done and I just cannot find the proper function? Thank you! Andrey --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
