Strengthening of Clarkson-McCarthy inequalities with several operators

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1. Verfasser: Zhang, Teng
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Veröffentlicht: 2024
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author Zhang, Teng
author_facet Zhang, Teng
contents Strengthening of two Clarkson-McCarthy inequalities with several operators is established. These not only confirm a conjecture of the author in [Israel J. Math. 2024], but also improve results of Hirazallah-Kittaneh in [Integral Equations Operator Theory 60 (2008)] and Bhatia-Kittaneh in [Bull. London Math. Soc. 36 (2004)]. We also give a generalization of a result for pairs $(A_i,B_i), 1\le i\le n$ and obtain another form of another inequality. The infinite cases of these inequalities are also discussed. The method is an extension of the result obtained by Bourin and Lee in [Linear Algebra Appl. 601 (2020)]. Some related eigenvalue inequalities are also obtained.
format Preprint
id arxiv_https___arxiv_org_abs_2408_07730
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Strengthening of Clarkson-McCarthy inequalities with several operators
Zhang, Teng
Functional Analysis
47A30, 15A60
Strengthening of two Clarkson-McCarthy inequalities with several operators is established. These not only confirm a conjecture of the author in [Israel J. Math. 2024], but also improve results of Hirazallah-Kittaneh in [Integral Equations Operator Theory 60 (2008)] and Bhatia-Kittaneh in [Bull. London Math. Soc. 36 (2004)]. We also give a generalization of a result for pairs $(A_i,B_i), 1\le i\le n$ and obtain another form of another inequality. The infinite cases of these inequalities are also discussed. The method is an extension of the result obtained by Bourin and Lee in [Linear Algebra Appl. 601 (2020)]. Some related eigenvalue inequalities are also obtained.
title Strengthening of Clarkson-McCarthy inequalities with several operators
topic Functional Analysis
47A30, 15A60
url https://arxiv.org/abs/2408.07730