On the Common Spectral Properties among Bounded Linear Operators

In the context of $A, B, C$, and $D$ be bounded linear operators on Banach space $X$ satisfying the following equations:\$$\begin{aligned}(A C)^{2}=(D B)(A C),(D B)^{2}=(A C)(D B);\\B(A C) A=B(D B) A, C(A C) D=C(D B) D.\end{aligned}$$In this note we study common spectral properties for $I-AC$ (resp. $AC$) and$I-BD$ (resp. $BD$). Then we extend Cline's formula and Jacobson’s lemma for the Drazin ( resp generalized Drazin, resp generalized Drazin-Riesz) invertibility. Additionally, the study provides some others results linear operators in Banach spaces.

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Publication Details

Journal
Proyecciones (Antofagasta)
Published
2025-04-04
DOI
https://doi.org/10.22199/issn.0717-6279-6244
Primary Topic
Numerical methods in inverse problems
Type
article
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article

On the Common Spectral Properties among Bounded Linear Operators

Soufiane Hadji
Proyecciones (Antofagasta)
Numerical methods in inverse problems
article

On the Common Spectral Properties among Bounded Linear Operators

Soufiane Hadji
article en

Abstract

In the context of $A, B, C$, and $D$ be bounded linear operators on Banach space $X$ satisfying the following equations:\$$\begin{aligned}(A C)^{2}=(D B)(A C),(D B)^{2}=(A C)(D B);\\B(A C) A=B(D B) A, C(A C) D=C(D B) D.\end{aligned}$$In this note we study common spectral properties for $I-AC$ (resp. $AC$) and$I-BD$ (resp. $BD$). Then we extend Cline's formula and Jacobson’s lemma for the Drazin ( resp generalized Drazin, resp generalized Drazin-Riesz) invertibility. Additionally, the study provides some others results linear operators in Banach spaces.

Proyecciones (Antofagasta)Vol. 44(2)
Sidi Mohamed Ben Abdellah University (MA)
Openalex Percentile: Top 87%
Numerical methods in inverse problems
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