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A von Neumann algebra characterization of property (T) for groupoids

Lupini, Martino (2017) A von Neumann algebra characterization of property (T) for groupoids. . (Submitted)

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For an arbitrary discrete probability-measure-preserving groupoid G, we provide a characterization of property (T) for G in terms of the groupoid von Neumann algebra L(G). More generally, we obtain a characterization of relative property (T) for a subgroupoid H⊂G in terms of the inclusion L(H)⊂L(G).

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Paper
Lupini, Martino0000-0003-1588-7057
Additional Information:The author was partially supported by the NSF Grant DMS-1600186.
Funding AgencyGrant Number
Subject Keywords:Groupoid, von Neumann algebra, property (T), Kazhdan groupoid, bimodule, cohomology, representation
Classification Code:2000 Mathematics Subject Classification. Primary 20L05, 46L10; Secondary 37A15.
Record Number:CaltechAUTHORS:20180410-085710199
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85716
Deposited By: Tony Diaz
Deposited On:10 Apr 2018 16:07
Last Modified:03 Oct 2019 19:34

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