17 citations · 64 across the 32 of their papers we have counts for
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math.FA2014
Bounded and Unbounded Operators Similar to Their Adjoints
Souheyb Dehimi, Mohammed Hichem Mortad
In this paper, we establish results about operators similar to their adjoints. This is carried out in the setting of bounded and also unbounded operators on a Hilbert space. Among…
math.FA2014
Generalizations of Kaplansky Theorem Related to Linear Operators
Abdelkader Benali, Mohammed Hichem Mortad
The purpose of this paper is to generalize a very famous result on products of normal operators, due to I. Kaplansky. The context of generalization is that of bounded hyponormal an…
math.FA2014
Commutativity up to a factor for bounded and unbounded operators
Chérifa Chellali, Mohammed Hichem Mortad
In this paper, we further investigate the problem of commutativity up to a factor (or -commutativity) in the setting of bounded and unbounded linear operators in a complex Hilbe…