On 2011-06-08, at 14:53 , Максим wrote: > Hello! > > I have a big group G (size is 5^6*2 > 30000). I wanted to construct a list of > subgroups but failed because of leak of memory.
Since your group G is solvable, you should preferably work in an isomorphic pc group (via `IsomorphismPcGroup'). You can then use `SubgroupsSolvableGroup' to compute the subgroups (up to conjugacy). In order to compute only the subgroups of a given order (up to conjugacy), you can use `SubgroupsSolvableGroup' together with `ExactSizeConsiderFunction'. All these functions are explained in the GAP manual. Note that you may still run out of memory, since the Sylow 5-subgroup may contain lots of subgroups. If this doesn't work for you, it would be best if you could send the GAP code to construct your group. Cheers Burkhard. _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
