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严格对角占优M-矩阵特征值的界

Bounds of Eigenvalue for Strictly Diagonally dominant M-Matrix
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摘要 对严格对角占优M-矩阵A的最小特征值τ(A)经典的下界估计式应用该类矩阵逆矩阵A-1元素的上界新的提高的估计式1/aii≤αii≤1/aii∑j≠iaijpji与1/aii≤aii≤1/aii∑j≠iaijnji,i∈n,得到τ(A)新的提高的且易于计算的界. The improved and easily - calculated τ(A)is obtained by treating the classical lower bound of minimum eigenvalue τ (A) of strictly diagonally dominant M - matrix and applying the new improved estimator of the elements(1/aii≤αii≤1/aii+∑j≠1aiipji,1/aii≤αii≤1/aii+∑j≠1aijnji,)for the inverse matrix A^-1.
出处 《曲靖师范学院学报》 2014年第3期9-11,共3页 Journal of Qujing Normal University
基金 国家自然科学基金项目(11361074) 云南省教育厅科学研究基金项目(2013Y585) 云南省教育厅科学研究基金项目(2012Y270) 文山学院重点学科数学建设项目(12WSXK01)
关键词 严格对角占优矩阵 M-矩阵 最小特征值 下界 迭代矩阵 strictly diagonally dominant matrix M - matrix minimum eigenvalue lower bound iterativematrix.
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