Dear James, I have a package Congruence which is still under development - I was waiting to GAP 4.5 to make its public release. It should be able to cover most, if not all subgroups from that preprint.
Please see http://www.cs.st-andrews.ac.uk/~alexk/papers/Aachen06.pdf for my slides about it. If you wish to get its development version, I may send you an archive. Best wishes, Alexander On 3 Aug 2012, at 12:31, James Read wrote: > 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 -- Dr. Alexander Konovalov School of Computer Science & Centre for Interdisciplinary Research in Computational Algebra University of St Andrews Tel +44/0 (1334) 461633 http://www.cs.st-andrews.ac.uk/~alexk Fax +44/0 (1334) 463278 The University of St Andrews is a charity registered in Scotland:No.SC013532 _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
