From the concept of α diagonally dominant matrix, two sufficient conditions of nonsingular H-matrices were obtained in this paper. An example was given to show that these results improve the known results.
非奇 H 矩阵在计算数学和矩阵理论的研究中非常重要,本文对该类矩阵给出了一个简捷判别条 件,根据这一判别条件,在一定条件下非奇 H 矩阵某些行的非对角元的模和可以任意大。另外 非奇 H 矩阵的较为实用的必要条件较少,本文...非奇 H 矩阵在计算数学和矩阵理论的研究中非常重要,本文对该类矩阵给出了一个简捷判别条 件,根据这一判别条件,在一定条件下非奇 H 矩阵某些行的非对角元的模和可以任意大。另外 非奇 H 矩阵的较为实用的必要条件较少,本文给出了一个非奇 H 矩阵的较为实用的必要条件。展开更多
文摘From the concept of α diagonally dominant matrix, two sufficient conditions of nonsingular H-matrices were obtained in this paper. An example was given to show that these results improve the known results.