双对角占优矩阵的注记

Notes On Double Diagonnally Dominant Matrices

文章通过对矩阵伴随着有向图特点的研究,得到了不可约双对角占优矩阵是否为非M-矩阵的一个充要条件。

In this article, a sufficient and necessary condition of whether irreducible double diagonally dominant matrices belongs to non--singular M--matrices is obtained by researching the associated directed diagram of matrices.