4 citations · 5 across the 6 of their papers we have counts for
6 papers
Quasi-Fredholm, Saphar Spectra for Integrated Semigroup
Abdelaziz Tajmouati, Hamid Boua, Mohamed Karmouni
In this paper, we show a spectral inclusion of integrated semigroups for Saphar, essentially Saphar and quasi-Fredholm spectra.
Spectra Originated from Fredholm Theory and Browder's Theorem
Mohamed Amouch, Mohamed Karmouni, Abdelaziz Tajmouati
We give a new characterization of Browders theorem through equality between the pseudo B-Weyl spectrum and the generalized Drazin spectrum. Also, we will give conditions under whic…
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…