12 citations · 18 across the 4 of their papers we have counts for
5 papers
Operator systems, contextuality and non-locality
Michalis Anoussis, Alexandros Chatzinikolaou, Ivan G. Todorov
We introduce an operator system, universal for the probabilistic models of a contextuality scenario, and identify its maximal C*-cover via the right C*-algebra of a canonical terna…
Homomorphisms of quantum hypergraphs
Gage Hoefer, Ivan G. Todorov
We introduce quantum homomorphisms between quantum hypergraphs through the existence of perfect strategies for quantum non-local games, canonically associated with the quantum hype…
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…
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…