G. Eleftherakis

activity

20042025

most citedTRO equivalent algebras

25 citations · 62 across the 29 of their papers we have counts for

collaborators

Showing math.OAShow all

27 papers · 1 filter

math.OA2025

Hyperreflexivity of von Neumann algebras and similarity of finitely generated $C^{*}$ -algebras

G. K. Eleftherakis, V. I. Paulsen

Let $A$ be a $C^{*}$ -algebra. We say that $A$ satisfies the SP if every bounded homomorphism $A \to B (K)$ , with $K$ a Hilbert space, is similar to a $*$ -homomorphism. We introduce thr…

math.OA2025

Symmetrisations of operator spaces

George K. Eleftherakis, Evgenios T. A. Kakariadis, Ivan G. Todorov

Let $A$ be a unital C*-algebra, $S$ be an operator $A$ -system and $E$ be an operator space that is a left operator $A$ -module. We introduce the symmetrisation of the pair $(E, S)$ a…

math.OA2023

The similarity problem and hyperreflexivity of von Neumann algebras

G. K. Eleftherakis, E. Papapetros

The similarity problem is one of the most famous open problems in the theory of $C^{*}$ -algebras. We say that a $C^{*}$ -algebra $\cl A$ satisfies the similarity property ((SP) for shor…

math.OA2023

Homomorphisms of $L^{1}$ algebras and Fourier algebras

M. Anoussis, G. K. Eleftherakis, A. Katavolos

We investigate conditions for the extendibility of continuous algebra homomorphisms $ϕ$ from the Fourier algebra $A (F)$ of a locally compact group $F$ to the Fourier-Stieltjes alge…

math.OA2021

Morita equivalence for operator systems

George K. Eleftherakis, Evgenios T. A. Kakariadis, Ivan G. Todorov

We define $Δ$ -equivalence for operator systems and show that it is identical to stable isomorphism. We define $Δ$ -contexts and bihomomorphism contexts and show that two operator sy…

math.OA2021

Hilbert modules, rigged modules and stable isomorphism