Perturbations not necessarily commutative

Filomat 2026 Open access

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Authors: Zakariae Aznay, Abdelmalek Ouahab, Hassan Zariouh
DOI: 10.2298/fil2603995a
Cited by: 0

Abstract

This paper treatises the preservation of some spectra under perturbations not necessarily commutative and generalizes several results which have been proved in the case of commuting operators.

Fields of Study & Subjects

Spectral Theory in Mathematical Physics Holomorphic and Operator Theory Matrix Theory and Algorithms

Publication details

Journal / source
Filomat
Volume
40
Issue
3
Pages
995–1003
Publication date
1 January 2026
Language
EN