文章基本信息

标题：An extension of several essential numerical radius inequalities of 2×2 $2 imes 2$ off-diagonal operator matrices
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作者：Mohammed Al-Dolat ; Imad Jaradat ; Dumitru Baleanu 等
期刊名称：Advances in Difference Equations
印刷版ISSN：1687-1839
电子版ISSN：1687-1847
出版年度：2020
卷号：2020
期号：1
页码：1-8
DOI：10.1186/s13662-020-02795-7
出版社：Hindawi Publishing Corporation
摘要：In this work, we provide upper and lower bounds for the numerical radius of an $n imes n$ off-diagonal operator matrix, which extends some results by Abu-Omar and Kittaneh (Stud. Math. 216:69–75, 2013; Linear Algebra Appl. 468:18–26, 2015; Rocky Mt. J. Math. 45(4):1055–1065, 2015), and Paul and Bag (Appl. Math. Comput. 222:2731–2943, 2013).
关键词：Numerical radius;Off-diagonal part;Operator matrix;