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Numerical Methods for a Class of Quadratic Matrix Equations
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作者 GUAN Jinrui WANG Zhixin SHAO Rongxia 《应用数学》 北大核心 2024年第4期962-970,共9页
Quadratic matrix equations arise in many elds of scienti c computing and engineering applications.In this paper,we consider a class of quadratic matrix equations.Under a certain condition,we rst prove the existence of... Quadratic matrix equations arise in many elds of scienti c computing and engineering applications.In this paper,we consider a class of quadratic matrix equations.Under a certain condition,we rst prove the existence of minimal nonnegative solution for this quadratic matrix equation,and then propose some numerical methods for solving it.Convergence analysis and numerical examples are given to verify the theories and the numerical methods of this paper. 展开更多
关键词 Quadratic matrix equation m-MATRIX Minimal nonnegative solution Newton method Bernoulli method
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矩阵Hadamard积和Fan积特征值的界 被引量:21
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作者 杜琨 《华东师范大学学报(自然科学版)》 CAS CSCD 北大核心 2008年第5期45-50,共6页
利用Cauchy-Schwitz不等式给出两个n阶非负矩阵A和B的Hadamard积A(?)B的谱半径ρ(A(?)B)的一组上界;并且与前人给出的结果进行比较,从而说明新结果的创新之处.类似地,利用Cauchy-Schwitz不等式给出两个n阶M-方阵A和B的Fan积A(?)B的最小... 利用Cauchy-Schwitz不等式给出两个n阶非负矩阵A和B的Hadamard积A(?)B的谱半径ρ(A(?)B)的一组上界;并且与前人给出的结果进行比较,从而说明新结果的创新之处.类似地,利用Cauchy-Schwitz不等式给出两个n阶M-方阵A和B的Fan积A(?)B的最小特征值r(A(?)B)的一组下界. 展开更多
关键词 HADAMARD积 Fan积 m-方阵 谱半径 最小特征值
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