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(Solved): (2) Let k be a field and K an extension field of k. (a) If A is an nn matrix over k, show that i ...



(2) Let \( k \) be a field and \( K \) an extension field of \( k \).
(a) If \( A \) is an \( n \times n \) matrix over \( k

(2) Let be a field and an extension field of . (a) If is an matrix over , show that its invariant factors over are the same as those over . (b) Let and be two matrices over . If and are similar over , prove that they are similar over .


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(a)If A is an n x n matrix over k, then its entries are elements o
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