- Cankaya University Journal of Science and Engineering
- Vol: 20 Issue: 1
- Pseudo-spectrum and Numerical Range of Matrices Walker of Dimension Three
Pseudo-spectrum and Numerical Range of Matrices Walker of Dimension Three
Authors : Khalef Bouich, Derkaoui Rafik, Abderrahmane Smail
Pages : 1-8
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Publication Date : 2023-05-01
Article Type : Research Article
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.