Numerical Radius Inequalities for Products of Hilbert Space Operators II

被引：1

作者：

Abu-Omar, Amer ^{[1
]}

机构：

[1] Fahad Bin Sultan Univ, Coll Sci & Humanities, Tabuk, Saudi Arabia

来源：

NUMERICAL FUNCTIONAL ANALYSIS AND OPTIMIZATION | 2020年 / 41卷 / 02期

关键词：

Accretive; cramped; dissipative; numerical radius; numerical range;

D O I：

10.1080/01630563.2019.1590400

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

New estimates for the numerical radius of the product AX are given. These estimates refine the known estimate w(AX) <= 2 parallel to A parallel to w(X) when 0 is not an element of W(A) or 0 is not an element of W(X).

引用

页码：127 / 133

页数：7