3 papers
math.FA2024
On Left and Right Semi-B-Fredholm Operators
Alaa Hamdan, Mohammed Berkani
To complete the study of Fredholm type operators of [10] and [11], we define in this paper the classes of left and right semi-B-Fredholm operators (Definition 3.1). Then, we prove…
math.FA2024
Fredholm-type Operators and Index
Alaa Hamdan, Mohammed Berkani
While in \cite{HB} we studied classes of Fredholm-type operators defined by the homomorphism from onto the Calkin algebra , being a Banach space, we…
math.FA2024
On Classes of Fredholm Type Operators
Alaa Hamdan, Mohammed Berkani
Given an idempotent in a Banach algebra and following the study in \cite{P50} of p-invertibility, we consider here left p-invertibility, right p-invertibility and p-invertibili…