By researching nilpotent matrix rank, a solution is obtained for general matrix power rank.

通过对幂零矩阵的秩的研究，给出了一般方阵幂的秩的求法。

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This paper discusses a method of selecting the boundary tree in edge finite element method, proposes the matrix rank method and introduces its applications.

介绍了棱边有限元法中选取边界树的原理和方法，提出了矩阵求秩法计算边界树，并结合实例说明其有效性．。

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A modified ULV updating algorithm. is applied to performing noise subspace tracking. The algorithm does not require rank estimation of the correlation matrix, and estimate directly the noise subspace.

使用一种修改的ULV更新算法进行噪声子空间跟踪，该算法不需要相关矩阵的秩估计，直接估计噪声子空间。

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