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Numerical radius inequalities for n x n operator matrices
Journal article   Open access  Peer reviewed

Numerical radius inequalities for n x n operator matrices

Amer Abu-Omar and Fuad Kittaneh
Linear algebra and its applications, Vol.468, pp.18-26
01/03/2015
DOI: https://doi.org/10.1016/j.laa.2013.09.049

Abstract

Mathematics Mathematics, Applied Physical Sciences Science & Technology
New numerical radius inequalities for general n x n operator matrices are given. These inequalities improve a well-known inequality of J.C. Hou and H.K. Du. A special emphasis is given to the off-diagonal parts of 2 x 2 operator matrices. (C) 2013 Elsevier Inc. All rights reserved.
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https://doi.org/10.1016/j.laa.2013.09.049View
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