How to do composition for finite group?
is the composition like permutation group ?
if express finite group like permutation group,
if so, can elements in first row duplicate? can the second row duplicate?
however, do not know how to map when there are more than or equal two choices
my guess is that
if finite group can be expressed into permutation group
for example 3*3 matrx, each column is a permutation group
then there will be 3 permutation groups, when do composition , first column's permutation group composite with first column's permutation group , second composite with second etc
is it right?