Safae Alaoui Chrifi

collaborators

2 papers

math.FA2019

Generalized Drazin-Riesz Invertibility for Operators Matrices

Abdelaziz Tajmouati, Mohammed Karmouni, Safae Alaoui Chrifi

Let $A \in B (X)$ , $B \in B (Y)$ and $C \in B (Y, X)$ where $X$ and $Y$ are infinite Banach or Hilbert spaces. Let $M_{C}=\begin{pmatrix} A & C\cr 0 & B \end{pm…

math.FA2018

Limit Points for Browder Spectrum of Operator Matrices

Abdelaziz Tajmouati, Mohammed Karmouni, Safae Alaoui Chrifi

Let $A \in B (X)$ and $B \in B (Y)$ , where $X$ and $Y$ are Banach spaces, and let $M_{C}$ be an operator acting on $X \oplus Y$ given by $M_C=\begin{pmatrix} A & C \…