1. (20 points.) Letmatrices over a field F.【題組】(a) Prove that rank(A+B)≤ rank(A)+ rank(B).

問題詳情

1. (20 points.) Let

matrices over a field F.

【題組】

(a) Prove that rank(A+B)≤ rank
(A)+ rank
(B).

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