E. Zerouali

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20192024

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math.FA2024

On some properties of $n$ -EP and $n$ -hypo-EP operators

Rachid Semmami, Hamid Ezzahraoui, El Hassan Zerouali

This article, is devoted to $n$ -EP and $n$ -hypo-EP operators. We give some characteristic properties of these two classes and various links with other known classes in the literatu…

math.FA2020

Jumping flatness and Aluthge transform of recursive weighted shifts

H. El Azhar, K. Idrissi, E. H. Zerouali

We devote this paper to Hamburger type weighted shifts. We give in particular an affirmative answer to a problem concerning subnormality of the Aluthge transform of Hamburger momen…

math.FA2019

On Indecomposable triples associated with nilpotent operators

Ahmed El Khantach, El Hassan Zerouali

We consider in this paper the family of triples $(V, T, U),$ where $V$ is a finite dimensional space, $T$ is a nilpotent linear operator on $V$ and $U$ is an invariant subspace…

On some properties of n-EP and n-hypo-EP operators

Jumping flatness and Aluthge transform of recursive weighted shifts

On Indecomposable triples associated with nilpotent operators

On some properties of $n$ -EP and $n$ -hypo-EP operators