Localized cohomology and some applications of Popa's cocycle super-rigidity theorem

2007/11/01 by Asger Törnquist, Asger Tornquist, Tornquist, Asger
Mathematics · #03E15 #37A20 #37A35 #Advanced Operator Algebra Research #Advanced Topology and Set Theory #FOS: Mathematics #Geometric and Algebraic Topology #Logic (math.LO) #Operator Algebras (math.OA) #math.LO #math.OA #msc:03E15 #msc:37A20 #msc:37A35

paper · pdf · doi:10.48550/arxiv.0711.0158

Final version, to appear in the Israel Journal of Mathematics

openalex publication_date 2007/11/01 · arxiv created 2009/07/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We prove that orbit equivalence of measure preserving ergodic a.e. free actions of a countable group with the relative property (T) is a complete analytic equivalence relation.

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