I am a beginner at Mathematica and have a few problems.
- Find all normal subgroups of the Alternating Group A[4].
- Find the order of a group Aut(U[8]).
- Find the group Aut(S[3]).
I've been trying to solve these problems, but I don't really know how to do it. In second I wrote:
G1 = Automorphisms[U[8]]
GroupOrder[G1]
and Mathematica says
"GroupOrder::grp: "Groupoid[{1,3,5,7},Mod[#1\ #2,8]&] is not a valid group." "
Thanks for any help.