Does anyone know how to use Sage for computations with congruence
subgroups other than Gamma, Gamma0, Gamma1 and GammaH? I need the
group Gamma(n,2n) = \{gamma in Gamma(n) : 2n | ab, 2n | cd}, as
defined in Ihara's theta function book, for odd n.-- 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
