3 papers
math.SP2018
Semi-Fredholm and Semi-Browder Spectra For -Quasi-Semigroups
Abdelaziz Tajmouati, Youness Zahouan
In this paper, we describe the different spectra of the -quasi-semigroups by the spectra of their generators. Specially, essential ascent and descent,Drazin invertible, upper…
math.FA2018
On Orbit Reflexive Tuple of Operators And Weak Orbit Reflexivity
Abdelaziz Tajmouati, Youness Zahouan
In this paper we give a various conditions for which the tuple of commutative bounded linear operators on an infinite dimensional ( re…
math.SP2018
Spectral Inclusions Between C0-Quasi-Semigroups and Their Generators
Abdelaziz Tajmouati, Youness Zahouan, Mohamed Ahmed Ould Mohamed Baba
In this paper, we show a spectral inclusion of a different spectra of a C0-quasi-semigroup and its generator and precisely for ordinary, point, approximate point, residual, essenti…