On Friday, December 28, 2012 10:02:07 AM UTC, raman wrote: > > Hi Sage, > I want to compute the rank of some elliptic curves. > I use Mwrank and the following option " -p 100 -v 0" but it is unable > to compute. > I increared the option to " -p 100000 -v 0" but again it could not. > I have attached some of my curves. >
I have not looked closely at your curves, but please note that mwrank makes no claims to give any useful output in all cases. In particular, curves with large coefficients and no 2-torsion are very likely to take much too long for mwrank's 2-descent algorithm. The -p parameter is completely irrelevant except for curves with 2-torsion where a second descent is carried out. For curves like yours mwrank searches for 2-coverings, but the search space is likely to be too large. John Cremona (author of mwrank) > Thanks > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en.
