双对角占优与非奇M-矩阵的判定

Double Diangonally Dominant And The Determining Criterions for Non-Singular M-Matrices

利用矩阵的双对角占优性给出了矩阵为非奇M矩阵的新判定准则，推广了已有的判定定理。实例说明，采用本文定理可以较为容易地得出判定结果。本文给出的判定准则具有简单、方便的特点，与已有的判定准则相比，具有更为广泛的适用范围。

In this paper, some new judging criterions for M-matrices have been presented by using the double diagonally dominant matrix and generalized the concluded results in [1]~[8].As the examples illustrated, the judging results can be easily obtained by using the theorems presented in this paper. Corresponding to others concluded judging results,the determinate criterions are of more convenient characteristics,and more widely application areas.