Further Hilbert-Schmidt Numerical Radius Inequalities for 2 × 2 Operator Matrices

IF 1.4 4区数学 Q2 MATHEMATICS, APPLIED

Numerical Functional Analysis and Optimization Pub Date : 2023-02-06 DOI:10.1080/01630563.2023.2174990

Soumia Aici, Abdelkader Frakis, Fuad Kittaneh

引用次数: 0

Abstract

We give several bounds for the Hilbert-Schmidt numerical radii of 2 × 2 operator matrices. Some of these bounds are refinements of the existing ones.

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2 × 2算子矩阵的进一步Hilbert-Schmidt数值半径不等式

给出了2 × 2算子矩阵的Hilbert-Schmidt数值半径的几个界。其中一些界限是对现有界限的改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Numerical Functional Analysis and Optimization 数学-应用数学

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Numerical Functional Analysis and Optimization is a journal aimed at development and applications of functional analysis and operator-theoretic methods in numerical analysis, optimization and approximation theory, control theory, signal and image processing, inverse and ill-posed problems, applied and computational harmonic analysis, operator equations, and nonlinear functional analysis. Not all high-quality papers within the union of these fields are within the scope of NFAO. Generalizations and abstractions that significantly advance their fields and reinforce the concrete by providing new insight and important results for problems arising from applications are welcome. On the other hand, technical generalizations for their own sake with window dressing about applications, or variants of known results and algorithms, are not suitable for this journal. Numerical Functional Analysis and Optimization publishes about 70 papers per year. It is our current policy to limit consideration to one submitted paper by any author/co-author per two consecutive years. Exception will be made for seminal papers.