NUMERICAL RADIUS INEQUALITIES FOR FINITE SUMS OF OPERATORS

被引：8
作者：
Mirmostafaee, Alireza Kamel [1 ]
Rahpeyma, Omid Pourbahari [1 ]
Omidvar, Mohsen Erfanian [2 ]
机构：
[1] Ferdowsi Univ Mashhad, Ctr Excellence Anal Algebra Struct, Dept Pure Math, POB 1159, Mashhad 91775, Iran
[2] Islamic Azad Univ, Fac Sci, Dept Math, Mashhad Branch, Mashhad, Iran
来源：
DEMONSTRATIO MATHEMATICA | 2014年 / 47卷 / 04期
关键词：
numerical radius; spectral radius; norm inequality;
D O I：
10.2478/dema-2014-0076
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
In this paper, we obtain some sharp inequalities for numerical radius of finite sums of operators. Moreover, we give some applications of our result in estimation of spectral radius. We also compare our results with some known results.
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页码：963 / 970
页数：8
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