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严格对角占优M-矩阵A的‖A^(-1)‖_∞上界的新估计式 被引量:8

New Upper Bound for ‖A^(-1)‖_∞ of Strictly Diagonally Dominant M-matrices
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摘要 针对严格对角占优M-矩阵A,利用矩阵元素,估计其逆矩阵元素的取值范围,进而给出‖A-1‖∞新的上界估计式,由此得到A的最小特征值下界的估计式.理论证明和算例分析表明新的上界估计式改进了一些已有结果. Let A be a real strictly diagonally dominant M-matrix.Using the element of M-matrix,the ranges for the elements of inverse matrix are given,and an upper bound for ‖A^-1‖∞is obtained.Furthermore,the lower bound of the smallest eigenvalue of A is presented.The given numerical example shows that these bounds improve several existing results.
出处 《湖南师范大学自然科学学报》 CAS 北大核心 2014年第3期91-94,F0003,共5页 Journal of Natural Science of Hunan Normal University
基金 四川省产业技术研究与开发资金资助项目(2011XM065) 中央高校基本科研业务费专项资金资助项目(ZYGX2011YB020) 四川省教育厅自然科学研究基金资助项目(132B0393)
关键词 对角占优矩阵 M-矩阵 无穷大范数 上界 diagonally dominant matrix M-matrix infinity norm upper bound
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参考文献12

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同被引文献49

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