Actions of groups and conditional expectations of finite index (Q1406369)
From MaRDI portal
 | This is the item page for this Wikibase entity, intended for internal use and editing purposes. Please use this page instead for the normal view: Actions of groups and conditional expectations of finite index |
scientific article; zbMATH DE number 1974819
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Actions of groups and conditional expectations of finite index |
scientific article; zbMATH DE number 1974819 |
Statements
Actions of groups and conditional expectations of finite index (English)
0 references
4 September 2003
0 references
The authors consider the action of a discrete group \(G\) on the \(C^*\)-algebra \(A\) with unit. In the paper under review, the conditional expectations on \(C^*\)-algebras are studied and some assertions on the index finiteness of such conditional expectations are proved. The reflexivity conditions for the corresponding Hilbert module are discussed.
0 references
conditional expectations of the finite index
0 references
