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Some reverse and numerical radius inequalities

  • Mohsen Shah Hosseini EMAIL logo und Mohsen Erfanian Omidvar
Veröffentlicht/Copyright: 20. Oktober 2018
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Abstract

In this paper, we present several numerical radius inequalities for Hilbert space operators. More precisely, we prove if T,UBH such that U is unitary, then

ω(TU±U*T)2ω(T2)+T±T*2.

Also, we have compared our results with some known outcomes.

  1. Communicated by Werner Timmermann

References

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Received: 2017-03-30
Accepted: 2017-07-07
Published Online: 2018-10-20
Published in Print: 2018-10-25

© 2018 Mathematical Institute Slovak Academy of Sciences

Heruntergeladen am 17.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ms-2017-0174/html
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