Property (T) and actions on infinite measure spaces
Abstract
The aim of the article is to provide a characterization of Kazhdan's property (T) for locally compact, second countable pairs of groups H⊂ G in terms of actions on infinite, σ-finite measure spaces. It is inspired by the recent characterization of the Haagerup property by similar actions due to T. Delabie, A. Zumbrunnen and the author.
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