科研之友
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摘要
Let be an arbitrary division ring and be the set of all n x n matrices over . We define the rank subtractivity or minus partial order on as defined on , i.e., iff rank(B) = rank(A) + rank(B-A). We describe the structure of maps I broken vertical bar on such that (A, B is an element of M-n (D)).
- 出版日期2014-8
