It's easy to tell whether these simpler matrices have banded inverses, and if they do, their combination will, too.
判断这些简单矩阵是否有带状逆阵要更容易，而如果它们有，那他们组合起来也会有。
It s easy to tell whether these simpler matrices have banded inverses, and if they do, their combination will, too.
判断这些简单矩阵是否有带状逆阵要更容易，而如果它们有，那他们组合起来也会有。
So engineers are interested in banded matrices with banded inverses, but which matrices those are is by no means obvious.
因此，工程师们才对拥有带状逆阵的带状矩阵感兴趣，然而那些是什么样的矩阵却并非显而易见。
A square real matrix a is called an S2NS matrix, if every matrix with the same sign pattern as a is invertible, and the inverses of all such matrices have the same sign pattern.
一个实方阵a称为是S2NS阵，若所有与A有相同符号模式的矩阵均可逆，且它们的逆矩阵的符号模式都相同。
Recent years, the weighted generalized inverses of matrices become a research hotspot of matrix theory. Many authors made some achievements in this field. We also got some interesting results.
近年来，矩阵的加权广义逆成了矩阵理论研究的热点，许多学者在这个领域做出了一定的成果，我们也得到了一些有意义的结论。
In this thesis, we mainly study problems on weighted generalized inverses, weighted polar decomposition, and partial orderings of matrices.
本文主要研究有关矩阵的加权广义逆，加权极分解和矩阵偏序等方面的问题。
In this thesis, we mainly study problems on weighted generalized inverses, weighted polar decomposition, and partial orderings of matrices.
本文主要研究有关矩阵的加权广义逆，加权极分解和矩阵偏序等方面的问题。
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