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Matrix Theory: Let G be the group Z/4 x Z/4. We show that the automorphism group Aut(G) is isomorphic to the set of all 2x2 matrices with entries in Z/4 that have determinant 1 or 3. We show that Aut(G) has order 96 and give a factorization method.
This set contains linear algebra over fields other than R and topics concerning matrices, such as canonical forms and groups.