My recent work has been in to speed up a lot of modular symbols related code, especially the linear algebra it depends on. Not everything is up to standars to get it into sage but should be in the near future.
> I'm also interested in the integrality question, and my own code is > pretty good at keeping denominators to a minimum (at most 2), though > admittedly that is just for weight 2 and trivial character. > > John > I'm also very interested in the integrallity question. I'm quite happy that your code is good at this specific case, since this is the case I really need for my master thesis which will be related to williams quartic torsion calculations. When working with Gamma1(p) for p prime and between 44 to 272 the denominator 2 occurs only for the primes 89, 239 and 257. If you are interested, I found a trick to at least calculate an integral basis of the modular symbols very efficiently in the case where the denominator is two. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
