Shirly Geffen

activity

20192026

most citedTracially amenable actions and purely infinite crossed products

1 citations · 2 across the 8 of their papers we have counts for

collaborators

Showing 2022Show all

3 papers · 1 filter

math.OA2022★ 1 cited

Tracially amenable actions and purely infinite crossed products

Eusebio Gardella, Shirly Geffen, Julian Kranz +2

We introduce the notion of tracial amenability for actions of discrete groups on unital, tracial C $^{*}$ -algebras, as a weakening of amenability where all the relevant approximations…

math.OA2022

Dynamical comparison and $Z$ -stability for crossed products of simple $C^{*}$ -algebras

Eusebio Gardella, Shirly Geffen, Petr Naryshkin +1

We establish $Z$ -stability for crossed products of outer actions of amenable groups on $Z$ -stable $C^{*}$ -algebras under a mild technical assumption which we call…

math.OA2022★ 1 cited

Classifiability of crossed products by nonamenable groups

Eusebio Gardella, Shirly Geffen, Julian Kranz +1

We show that all amenable, minimal actions of a large class of nonamenable countable groups on compact metric spaces have dynamical comparison. This class includes all nonamenable…

Tracially amenable actions and purely infinite crossed products

Dynamical comparison and Z-stability for crossed products of simple C∗-algebras

Classifiability of crossed products by nonamenable groups

Dynamical comparison and $Z$ -stability for crossed products of simple $C^{*}$ -algebras