Mathematica Bohemica, Vol. 147, No. 4, pp. 547-566, 2022


Numerical radius inequalities for Hilbert $C^*$-modules

Sadaf Fakri Moghaddam, Alireza Kamel Mirmostafaee

Received May 10, 2021.   Published online January 26, 2022.

Abstract:  We present a new method for studying the numerical radius of bounded operators on Hilbert $C^*$-modules. Our method enables us to obtain some new results and generalize some known theorems for bounded operators on Hilbert spaces to bounded adjointable operators on Hilbert $C^*$-module spaces.
Keywords:  numerical radius; inner product space; $C^*$-algebra
Classification MSC:  47A12, 46C05, 47C10


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Affiliations:   Sadaf Fakri Moghaddam, Alireza Kamel Mirmostafaee (corresponding author), Center of Excellence in Analysis on Algebraic Structures, Ferdowsi University of Mashhad, P.O. Box 1159, Mashhad 91775, Iran, e-mail: sadaf.moghadam4@gmail.com, mirmostafaee@gmail.com


 
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