12 citations · 31 across the 14 of their papers we have counts for
14 papers
Homomorphisms of algebras and Fourier algebras
M. Anoussis, G. K. Eleftherakis, A. Katavolos
We investigate conditions for the extendibility of continuous algebra homomorphisms from the Fourier algebra of a locally compact group to the Fourier-Stieltjes alge…
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…
Synthetic properties of locally compact groups: preservation and transference
M. Anoussis, G. K. Eleftherakis, A. Katavolos
Using techniques from TRO equivalence of masa bimodules we prove various transference results: We show that when is a group homomorphism which pushes forward the Haar measure o…
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…
Idempotents of large norm and homomorphisms of Fourier algebras
M. Anoussis, G. K. Eleftherakis, A. Katavolos
We provide necessary and sufficient conditions for the existence of idempotents of arbitrarily large norms in the Fourier algebra A(G) and the Fourier-Stieltjes algebra B(G) of a l…
Homomorphisms of Fourier algebras and transference results
M. Anoussis, G. K. Eleftherakis, A. Katavolos
We prove that if is a homomorphism between the Fourier algebra of a locally compact group and the Fourier-Stieltjes algebra of a locally compact group in…
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}(…
Topological Radicals of Nest Algebras
G. Andreolas, M. Anoussis
Let N be a nest on a Hilbert space H and AlgN the corresponding nest algebra. We determine the hypocompact radical of AlgN . Other topological radicals are also characterized.
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…
Ideals of the Fourier algebra, supports and harmonic operators
M. Anoussis, A. Katavolos, I. G. Todorov
We examine the common null spaces of families of Herz-Schur multipliers and apply our results to study jointly harmonic operators and their relation with jointly harmonic functiona…
Ideals of and bimodules over maximal abelian selfadjoint algebras
M. Anoussis, A. Katavolos, I. G. Todorov
This paper is concerned with weak* closed masa-bimodules generated by A(G)-invariant subspaces of VN(G). An annihilator formula is established, which is used to characterise the we…
Operator algebras from the discrete Heisenberg semigroup
M. Anoussis, A. Katavolos, I. G. Todorov
We study reflexivity and structure properties of operator algebras generated by representations of the discrete Heisenberg semi-group. We show that the left regular representation…
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…
Angles in C*-algebras
M. Anoussis, A. Katavolos, I. G. Todorov
In this work we characterise the C*-algebras A generated by projections with the property that every pair of projections in A has positive angle, as certain extensions of abelian a…