3 papers
math.OA2020
Applications of entropy of product systems: higher-rank graphs
Evgenios T. A. Kakariadis
We consider C*-algebras of finite higher-rank graphs along with their rotational action. We show how the entropy theory of product systems with finite frames applies to identify th…
math.OA2019
Finite dimensional approximations for Nica-Pimsner algebras
Evgenios T. A. Kakariadis
We give necessary and sufficient conditions for nuclearity of Cuntz-Nica-Pimsner algebras for a variety of quasi-lattice ordered groups. First we deal with the free abelian lattice…
math.OA2019
Operator algebras of higher rank numerical semigroups
Evgenios T. A. Kakariadis, Elias G. Katsoulis, Xin Li
A higher rank numerical semigroup is a positive cone whose seminormalization is isomorphic to the free abelian semigroup. The corresponding nonselfadjoint semigroup algebras are kn…