I don't know the answer (I was not involved at all in implementing any of this in Sage), though I suspect that the answer is "yes", so I am copying sage-support in case someone else knows.
John On Thu, Aug 4, 2011 at 1:17 AM, max flander <[email protected]> wrote: > Hi John, > > I'm not sure if you remember me, I was at the Sage days in Leiden last year. > > I was hoping you could help me with a question. I need to compute Z bases of > weight 2 cusp forms. I've noticed that the modular forms you get with > CuspForms(N).basis() have integer coefficients. Do you know if this is a > Z-basis for S_2(N, Z) , i.e. the submodule of S_2(N, C) containing all forms > with q-expansion in Z[[]]? Or > will it just span some sublattice? > > Cheers heaps, > Max > > > -- To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
