Dear Forum,
How can one create the modular group and certain congruence subgroups of the modular group in GAP? In particular I am looking at the nine index 24 subgroups on page 22 here: http://arxiv.org/pdf/1201.3633v2.pdf. Many thanks, James Read _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
