2013/10/15 by Alcides Buss, Buss, Alcides, Siegfried Echterhoff +1
Mathematics · #22D35 #46L55 #Advanced Operator Algebra Research #Algebraic structures and combinatorial models #FOS: Mathematics #Homotopy and Cohomology in Algebraic Topology #Operator Algebras (math.OA) #math.OA #msc:22D35 #msc:46L55
paper · pdf · doi:10.48550/arxiv.1310.3934
29 pages. Revised version, to appear in Trans. Amer. Math. Soc
openalex publication_date 2013/10/15 · arxiv created 2014/05/30 · arxiv updated 2014/06/02 · openalex created_date 2025/10/27 · openalex updated_date 2026/07/28
Using the theory of weakly proper actions of locally compact groups recently developed by the authors, we give a unified proof of both reduced and maximal versions of Mansfield's Imprimitivity Theorem and obtain a general version of Landstad's Duality Theorem for twisted group coactions. As one application, we obtain the stabilization trick for arbitrary twisted coactions, showing that every twisted coaction is Morita equivalent to an inflated coaction.