Dear Forum, On Jan 16, 2011, at 1/16/11 4:49, Junio Moreira wrote:
> I'm always needing to learn more about the GAP-groups. Can anyone help me on > the following question? Question: I have a list of 500 sublist where each > sublist consists of six groups. Is there a command to display or renumber > only those sublists with trivial intersection? Is there a function in GAP can > solve this? If the entries in the sublist are algebraic structures (i.e. ``trivial'' means order 1), you could use Filtered(list,sub->Size(Intersection(sub))=1); to give you a sublist of the desired entries.(replace 1 by 0 if trivial means empty) If instead you wanted the index numbers in your original list, you could use Filtered([1..Length(list)],n->Size(Intersection(list[n]))=1); Best, Alexander Hulpke -- Colorado State University, Department of Mathematics, Weber Building, 1874 Campus Delivery, Fort Collins, CO 80523-1874, USA email: hul...@math.colostate.edu, Phone: ++1-970-4914288 http://www.math.colostate.edu/~hulpke _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
