English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

From the mid-1970s, Eberhard Kirchberg undertook a remarkable extensive studyof $C^*$-algebras exactness whose applications spread out to many branches ofanalysis. In this review we focus on the case of groupoid $C^*$-algebras forwhich the notion of exactness needs to be better understood. In particular someversions of exactness play an important role in the study of the weakcontainment problem, that is whether the coincidence of the full and reducedgroupoid $C^*$-algebras implies the amenability of the groupoid or not.

Amenability, exactness and weak containment property for groupoids