A good example is AllSmallGroups(96,191), which seems to have StructureDescription:
"(C2.S4=SL(2.3).C2):C2" I understand that the colon ":" denotes semidirect product, so this is the semidirect product of something with the cyclic group of order 2. Here is C2 the normal subgroup of the semidirect product? Does the normal subgroup always appear on the right? What about the rest? Since the whole group has order 96, the stuff on the left of the ":" must have order 48, so I can only assume that the "=" means "or equivalently...". Is that correct? In this case, I'm guessing "." refers to a non-split extension? If I see G.H, which is the normal subgroup? Thanks, - Will -- William Yun Chen Ph.D. Student & Graduate Teaching Associate Department of Mathematics Pennsylvania State University, University Park, PA, 16801 che...@math.psu.edu oxei...@gmail.com _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum