Pseudo-spectrum and Numerical Range of Matrices Walker of Dimension Three

Year 2023, Volume: 20 Issue: 1, 1 - 8, 01.05.2023

Khalef Bouich , Derkaoui Rafik , Abderrahmane Smaıl

Abstract

The study of numerical range, spectrum and pseudo spectrum appears in diffrent sci- entific fields, for example the domain of spectral theory, the stability of dynamics elec- tricity, physics, the quantum mechanics. In this paper, we find the spectrum, pseudo- spectrum and numerical range on Walker manifolds of dimension three. Two examples are given for metric g f .

Keywords

Bounded operator, Spectrum, Pseudo-spectrum, Numerical range, Matrix Walker.

Supporting Institution

University of oran 1 Ahmed Ben Bella, Algeria

Project Number

2

Thanks

We thank all the members of this wonderful journal with high scientific and purposeful content

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