吉林大学学报(理学版)

• 数学 • 上一篇    下一篇

α-对角占优矩阵的等价表征及应用

邰志艳1, 李庆春2, 胡硕2,3   

  1. 1. 吉林医药学院 数学教研室, 吉林 吉林 132013; 2. 北华大学 数学与统计学院, 吉林 吉林 132013;3. 沈阳铁路局 大连机务段, 辽宁 大连 116000
  • 收稿日期:2014-12-18 出版日期:2015-09-26 发布日期:2015-09-29
  • 通讯作者: 邰志艳 E-mail:taizhiyan@126.com

Equivalent Representations of α-DiagonallyDominant Matrix and Its Applications

TAI Zhiyan1, LI Qingchun2, HU Shuo2,3   

  1. 1. Department of Mathematics, Jilin Medical College, Jilin 132013, Jilin Province, China;2. College of Mathematics and Statistics, Beihua University, Jilin 132013, Jilin Province, China;3. Dalian Locomotive of Shenyang Railway Bureau, Dalian 116000, Liaoning Province, China
  • Received:2014-12-18 Online:2015-09-26 Published:2015-09-29
  • Contact: TAI Zhiyan E-mail:taizhiyan@126.com

摘要:

先利用不等式理论给出严格α-对角占优矩阵的充要条件, 再根据严格α-对角占优矩阵的性质证明得出非奇异H-矩阵的简单实用判定方法, 并通过数值算例验证了结果的有效性和优越性.

关键词: &alpha, -对角占优矩阵, 不可约对角占优矩阵, 非奇异H-矩阵, 非零元素链

Abstract:

Based on the theory of inequality, the necessary and sufficient conditions of strictly α-diagonally dominant matrix were presented. According to the properties of strictly α-diagonally dominant matrix, simple and practical criteria to judge nonsingular H-matrix were obtained. The validity and superiority of the results were verified by a numerical example.

Key words: α-diagonally dominant matrix, irreducible diagonally dominant matrix; nonsingular H-matrix; nonzero elements chain

中图分类号: 

  • O151.21