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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…
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…
Bimodules over , harmonic operators and the non-commutative Poisson boundary
Mihalis Anoussis, Aristides Katavolos, Ivan G. Todorov
Starting with a left ideal of we consider its annihilator in and the generated -bimodule in , ${\rm Bim}(…
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…
S-numbers of elementary operators on C*-algebras
M. Anoussis, V. Felouzis, I. G. Todorov
We study the s-numbers of elementary operators acting on C*-algebras. The main results are the following: If is any tensor norm and are such that the sequences $s…