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Almost Invariant Sets

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.

4 nodes3 linksoverview mapAlmost Invariant Sets
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Almost Invariant Sets4 visible / 4 total nodes / 3 links
AuthorshipTopic signalTopic signalWAlmost Invariant Setspreprint / 2015AM. J. DunwoodyResearcherTmath.GR2651 worksTmath.GT2393 works
PaperSignal 103 links

Almost Invariant Sets

preprint / 2015

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