Kazhdan groups have cost 1
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Hutchcroft, Tom
Pete, Gábor
Abstract
Abstract: We prove that every countably infinite group with Kazhdan’s property (T) has cost 1, answering a well-known question of Gaboriau. It remains open if they have fixed price 1.
Description
Funder: Alfréd Rényi Institute of Mathematics
Keywords
Article
Journal Title
Inventiones mathematicae
Conference Name
Journal ISSN
0020-9910
1432-1297
1432-1297
Volume Title
221
Publisher
Springer Berlin Heidelberg
