韓貴春,錢茜,張俊麗
(1.內(nèi)蒙古民族大學(xué)數(shù)學(xué)學(xué)院,內(nèi)蒙古通遼 028043;2.電子科技大學(xué)成都學(xué)院文理系,四川成都 611731)
Ostrowski定理的推廣與非奇異H-矩陣的實用判定
韓貴春1,錢茜2,張俊麗1
(1.內(nèi)蒙古民族大學(xué)數(shù)學(xué)學(xué)院,內(nèi)蒙古通遼 028043;2.電子科技大學(xué)成都學(xué)院文理系,四川成都 611731)
利用α2-雙對角占優(yōu)理論,給出了幾個判定非奇異H-矩陣的充分條件,擴大了非奇異H-矩陣的判定范圍,并給出了相應(yīng)的數(shù)值算例說明結(jié)果的有效性.
非奇異H-矩陣;雙對角占優(yōu)矩陣;非零元素鏈
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Generalizations Ostrowski′s theorem and practical criteria for H-matrices
Han Guichun1,Qian Qian2,Zhang Junli1
(1.School of Mathematics,Inner Mongolia University for the Nationalities,Tongliao028043,China;
2.Department of Arts and Science,College of University of Electronic Science and Technology of China, Chengdu611731,China)
In this paper,we give some sufcient conditions for nonsingular H-matrices by the theory of α2-double diagonally dominant matrices.The criteria for nonsingular H-matrices are expended,and efectiveness of the criteria is illustrated by numerical examples.
nonsingular H-matrix,double diagonally dominant matrix,chain of nonzero elements
O151.21
A
1008-5513(2013)06-0601-08
10.3969/j.issn.1008-5513.2013.06.008
2012-12-05.
內(nèi)蒙古民族大學(xué)科學(xué)研究基金(NMD1226).
韓貴春(1978-),碩士,講師,研究方向:數(shù)值代數(shù).
2010 MSC:15A57