Jeribi essential and Jeribi essential pseudo S-spectra in right quaternionic Hilbert space

In this note, we extend our exploration of the essential S-spectrum and introduce the class of Jeribi essential pseudo S-spectrum for bounded right linear operators over the right quaternionic Hilbert space. We explore several properties and the stability of the essential S-spectrum and essential pseudo S-spectrum of this class. Furthermore, we study relationships between the Jeribi essential S-spectrum and other essential S-spectra while investigating the correlation of the essential S-spectrum of this class for 2 × 2 block operator matrices with their components and formulating a characterization of the Jeribi essential S-spectrum for the summation of two bounded linear operators. The study concludes by introducing the notion of essential pseudo S-spectrum of this class and exploration of some of the algebraic properties.

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Publication Details

Journal
Journal of Mathematical Physics
Published
2026-02-01
DOI
https://doi.org/10.1063/5.0278457
Primary Topic
Holomorphic and Operator Theory
Type
article
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article

Jeribi essential and Jeribi essential pseudo S-spectra in right quaternionic Hilbert space

Preeti Dharmarha, Sony Kumari
Journal of Mathematical Physics
Holomorphic and Operator Theory
article

Jeribi essential and Jeribi essential pseudo S-spectra in right quaternionic Hilbert space

Preeti Dharmarha, Sony Kumari
article en

Abstract

In this note, we extend our exploration of the essential S-spectrum and introduce the class of Jeribi essential pseudo S-spectrum for bounded right linear operators over the right quaternionic Hilbert space. We explore several properties and the stability of the essential S-spectrum and essential pseudo S-spectrum of this class. Furthermore, we study relationships between the Jeribi essential S-spectrum and other essential S-spectra while investigating the correlation of the essential S-spectrum of this class for 2 × 2 block operator matrices with their components and formulating a characterization of the Jeribi essential S-spectrum for the summation of two bounded linear operators. The study concludes by introducing the notion of essential pseudo S-spectrum of this class and exploration of some of the algebraic properties.

Journal of Mathematical PhysicsVol. 67(2)
University of Delhi (IN), Jai Prakash University (IN)
Reduced inequalities
Openalex Percentile: Top 54%
Holomorphic and Operator Theory
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Jeribi essential and Jeribi essential pseudo S-spectra in right quaternionic Hilbert space — Preeti Dharmarha, Sony Kumari · Journal of Mathematical Physics (2026) | TGRS Research Map | TGRS