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http://dx.doi.org/10.5666/KMJ.2021.61.3.583

New Bounds for the Numerical Radius of a Matrix in Terms of Its Entries  

Frakis, Abdelkader (Department of Mathematics, Mustapha Stambouli University)
Publication Information
Kyungpook Mathematical Journal / v.61, no.3, 2021 , pp. 583-590 More about this Journal
Abstract
In this work we give new upper and lower bounds for the numerical radius of a complex square matrix A using the entries and the trace of A.
Keywords
Numerical range; trace of matrix; Frobenius norm; numerical radius; spectral radius;
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