On Rotfel'd type inequalities for sectorial matrices

被引：2
作者：
Mao, Yanling [1 ,2 ]
Ji, Guoxing [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Math & Stat, Xian 710062, Peoples R China
[2] Qinghai Minzu Univ, Sch Math & Stat, Xining 810007, Peoples R China
来源：
LINEAR ALGEBRA AND ITS APPLICATIONS | 2024年 / 691卷
基金：
中国国家自然科学基金;
关键词：
Concave function; Norm inequality; Sectorial matrix; NUMERICAL RANGES; EIGENVALUE INEQUALITIES; EXTENSIONS; CONVEX;
D O I：
10.1016/j.laa.2024.03.018
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Using a matrix decomposition for sectorial matrices and an AM-GM inequality for singular values, we present a new Rotfel'd type inequality for sectorial matrices, which generalizes and partially improves some results by Zhang. We also give alternative simpler proofs of a main result of a recent paper by Yang, Lu and Chen as well as that by Fu and Liu. (c) 2024 Elsevier Inc. All rights reserved.
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页码：123 / 132
页数：10
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