Andrew McKee

activity

20192021

collaborators

4 papers

math.OA2021

Amenable and inner amenable actions and approximation properties for crossed products by locally compact groups

Andrew McKee, Reyhaneh Pourshahami

Amenable actions of locally compact groups on von Neumann algebras are investigated by exploiting the natural module structure of the crossed product over the Fourier algebra of th…

math.FA2021

Central and convolution Herz-Schur multipliers

Andrew McKee, Reyhaneh Pourshahami, Ivan G. Todorov +1

We obtain descriptions of central operator-valued Schur and Herz-Schur multipliers, akin to a classical characterisation due to Grothendieck, that reveals a close link between cent…

math.OA2020

Exactness and SOAP of Crossed Products via Herz--Schur multipliers

Andrew McKee, Lyudmila Turowska

Given a $C^{*}$ -dynamical system $(A, G, α)$ , with $G$ a discrete group, Schur $A$ -multipliers and Herz--Schur $(A, G, α)$ -multipliers are used to implement approximation properties, nam…

math.OA2019

Multipliers and Duality for Group Actions

Andrew McKee

We define operator-valued Schur and Herz--Schur multipliers in terms of module actions, and show that the standard properties of these multipliers follow from well-known facts abou…