Rank and decomposition of infinite matrix over a division ring are discussed. Two rank-finite matrices are same-inverse equivalent if and only if their rank equal is proved.
讨论除环上无限方阵的秩及分解问题。证明了除环上秩有限的二无限方阵同逆等价的充要条件是它们的秩相等。
We generalize the rank of matrices over a division ring to the B-rank of matrices over a ring with identity and study properties for the B-rank of matrices over a ring with identity.
我们将体上矩阵的秩推广为含幺环上矩阵的B-秩，并研究了含幺环上矩阵的B—秩的性质。
Mother said, if I have a soul ring, then, I am a control system by division.
妈妈说，如果我能够拥有一个魂环，那么，我就是一名控制系战魂师了。
Each ring road of Beijing is a rough division of social class.
北京的每一条环线都是一个阶层的粗略划分。
Each ring road of Beijing is a rough division of social class.
北京的每一条环线都是一个阶层的粗略划分。
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