Answer to Question #16728 in Abstract Algebra for john.george.milnor

Question #16728
For any ring k, let A = Mn(k) and let R (resp. S) denote the ring of n × n upper (resp. lower) triangular matrices over k. Suppose k has an anti-automorphism (resp. involution). Show that the same is true for A,R and S.
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Expert's answer
2012-10-25T10:05:47-0400
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