3 papers
math.OA2022
Topological Radicals of Semicrossed Products
G. Andreolas, M. Anoussis, C. Magiatis
We characterize the hypocompact radical of a semicrossed product in terms of properties of the dynamical system. We show that an element A of a semicrossed product is in the hypoco…
math.OA2021
Compact multiplication operators on semicrossed products
G. Andreolas, M. Anoussis, C. Magiatis
We characterize the compact multiplication operators on a semi-crossed product in terms of the corresponding dynamical system. We also characterize the compact elements of this alg…
math.OA2016
Compact multiplication operators on nest algebras
G. Andreolas, M. Anoussis
Let N be a nest on a Hilbert space H and AlgN the corresponding nest algebra. We obtain a characterization of the compact and weakly compact multiplication operators defined on nes…