Improved lower bounds for numerical radius via Cartesian decomposition

被引：1

作者：

Alrimawi, Fadi ^{[1
]}

Abushaheen, Fuad A. ^{[2
,3
]}

Alkhateeb, Rami ^{[1
]}

机构：

[1] Al Ahliyya Amman Univ, Dept Basic Sci, Amman, Jordan

[2] Middle East Univ, Fac Arts & Educ Sci, Basic Sci Dept, Amman, Jordan

[3] Appl Sci Private Univ, Appl Sci Res Ctr, Amman, Jordan

来源：

JOURNAL OF MATHEMATICS AND COMPUTER SCIENCE-JMCS | 2024年 / 33卷 / 02期

关键词：

Numerical radius; operator norm; bounded linear operator; NORM INEQUALITIES;

D O I：

10.22436/jmcs.033.02.05

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

In this article, we derive various lower bounds for the numerical radius of operators that refine the well-known inequality w2(A) ? 14 IIA*A+AA*II.

引用

页码：169 / 175

页数：7

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