Almost Invariant Sets

2014/09/24 by M. J. Dunwoody, Dunwoody, M. J. · 1 citation
Mathematics · #Geometric and Algebraic Topology #Advanced Operator Algebra Research #Holomorphic and Operator Theory

paper · pdf · doi:10.48550/arxiv.1409.6872

Abstract

A short proof of a conjecture of Kropholler is given. This gives a relative version of Stallings' Theorem on the structure of groups with more than one end. A generalisation of the Almost Stability Theorem is also obtained, that gives information about the structure of the Sageev cubing.

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