On Jul 17, 2008, at 9:51 AM, Hamish wrote:
>> I don't have time to debug this now, but I want to mention that >> it sounds suspiciously similar to this ticket: >> >> http://sagetrac.org/sage_trac/ticket/2943 > > It certainly does. (I probably should have filtered the tickets with > "power series" instead of just "polynomial" when I was looking through > them.) > > The main difference seems to be that in the the present case, the base > ring of the polynomial ring is exact, though the polynomial ring in > question is "derived" from the inexact power series ring used in the > calculation of the formal group law. Anyway, I get something that > works if I remove the bit in the patch in ticket 2943 that uses the > old way of determining "__nonzero__-ness" for exact base rings (i.e. > now the code says a polynomial is __nonzero__ if all its > coefficients are nonzero, instead of checking if the list of > coefficients is non-empty). I have added a link back to this thread from the ticket. If you find out any more, please add comments to that ticket. david --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
