1) Let G be the set of 2x2 matrices given by
show that G is a group under matrix multiplication. You may assume that matrix multiplication is associative.
2) Let G be a group,... prove that G is Abelian.
See attachment.© BrainMass Inc. brainmass.com October 9, 2019, 4:17 pm ad1c9bdddf
This shows how to prove that G is a group under matrix multiplication and also how to prove that a group is Abelian.