Abderrahim Baghdad

collaborators

2 papers

math.FA2023

A note on the generalized maximal numerical range of operators

Abderrahim Baghdad, El Hassan Benabdi, Kais Feki

The paper considers some new properties of the so-called $A$ -maximal numerical range of operators, denoted by $W_{m a x}^{A} (\cdot)$ , where $A$ is a positive bounded linear operator a…

math.FA2018

Closed numerical ranges

Abderrahim Baghdad, Mohamed Chraibi kaadoud

Let $x = (x_{n})_{n}$ be a bounded complex sequence and let $M_{x} = sup_{n} ∣ x_{n} ∣$ . By using a normaloid operator related to the sequence $x = (x_{n})_{n}$ , we prove that $$ \sup_{…