分块矩阵
This paper proved the theorem A of literature [ 1] with the method of partition matrix and discussed under different condition, the theorem A and the formuls of a few simple rank with declines arbitrary as equivalence.
本文采用分块矩阵的方法证明了文献[1]中的定理A,而且讨论了不同条件下定理A与几个简单秩的降阶公式等价。
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