3 papers
math.FA2026
Weighted conditional expectation operators and nuclearity
M. S. Al Ghafri, S. Shamsigamchi, Y. Estaremi
We provide a characterisations of nuclear weighted conditional expectation operators on -spaces, for . As a consequence, when the underlying measure space…
math.FA2025
On a class of m-Isometric and Quasi-m-isometric operators
Y. Estaremi, M. S. Al Ghafri, S. Shamsigamchi
In this paper we characterize -isometric and quasi--isometric weighted conditional type (WCT) operators on the Hilbert space . Also, we prove that the subclasses of…
math.FA2025
Composition operators on some semi-Hilbert spaces
Y. Estaremi, M. S. Al Ghafri
This paper investigates composition operators and weighted composition operators on semi-Hilbert spaces induced by positive multiplication operators on \( L^2(μ) \). Within the fr…