Lower bounds for numerical radius of matrices

被引：0

作者：

Shen, Shu-Qian ^{[1
]}

Huang, Ting-Zhu ^{[1
]}

Yu, Juan

机构：

[1] Univ Elect Sci & Technol China, Sch Math, Chengdu 610054, Peoples R China

来源：

PROCEEDINGS OF THE 14TH CONFERENCE OF INTERNATIONAL LINEAR ALGEBRA SOCIETY | 2007年

关键词：

lower bounds; numerical radius;

D O I：

暂无

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We present a new equivalent formula for the numerical radius of a matrix. Based on this formula, some lower bounds for the numerical radius are derived. Theoretic analysis shows that the presented bounds are tighter than that stated in Merikoski and Kumar [Lin. Alg. Appl. 410(2005)135-142].

引用

页码：233 / 236

页数：4

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