4 citations · 6 across the 20 of their papers we have counts for
7 papers · 1 filter
ON λ-Commuting Operators
Abdelaziz Tajmouati, Abdeslam El Bakkali, M. B. Mohamed Ahmed
In this paper, we study the operator equation for a bounded operator on a complex Hilbert space. We focus on algebraic relations between different operators that inc…
Spectral inclusion for -Semigroups Drazin invertible and Quasi-Fredholm operators
A. Tajmouati, M. Amouch, M. R. F. Z. Alhomidi
Let be a semigroups and be its infinitesimal generator. In this work, we prove that the spectral inclusion for remains true for the Dr…
Pseudo B-Fredholm Operators and Spectral Theory
Abdelaziz Tajmouati, Mohamed Amouch, Mohamed Karmouni
In this paper, we show that every pseudo B-Fredholm operator is a pseudo Fredholm operator. Afterwards, we prove that the pseudo B-Weyl spectrum is empty if and only if the pseudo…
Semigroup and Local Spectral Theory
Abdelaziz Tajmouati, Mohamed Karmouni, Hamid Boua +1
In this paper, we studied some local spectral properties for a Co semigroup and its generator. Some stabilities results are also established.
Pseudo semi B-Fredholm and Generalized Drazin invertible operators Through Localized SVEP
Abdelaziz Tajmouati, Mohamed Karmouni, Mbark Abkari
In this paper, we define and study the pseudo upper and lower semi B-Fredholm of bounded operators in a Banach space. In particular, we prove equality up to between the left…
Generalized Kato Decomposition For Operator Matrices and SVEP
Abdelaziz Tajmouati, Mohamed Karmouni
In this paper, we show that for a bounded linear operator , the corresponding generalized Kato decomposition spectrum satisfies the equality $σ_{gD}(T)=σ_{gK}(T)\cup…
Spectral equality for semigroups
A. Tajmouati, M. Amouch, M. R. F. Alhomidi Zakariya
In this paper, we give conditions for which the semigroups satisfies spectral equality for semiregular, essentially semiregular and semi-Fredholm spectrum. Also, we establish…