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SUMMARY:A Conjecture from 1986 about splittings of groups: its statement\,
  potential generalizations\, and Martin Dunwoody's proof - Peter Kropholle
 r (University of Southampton)
DTSTART:20170609T124500Z
DTEND:20170609T140000Z
UID:TALK72953@talks.cam.ac.uk
CONTACT:Maurice Chiodo
DESCRIPTION:Suppose that G is a group with a subgroup H and a subset B suc
 h that B=BH\, neither B nor its complement is contained in a finite union 
 HF of cosets of H\, and for all g\\in G\, the symmetric difference of B an
 d Bg is contained in a finite union of right cosets of H. Then G splits ov
 er a subgroup K that is contained in a finite union of cosets of H\, eithe
 r as a free product with amalgamation\, or as an HNN extension.\n
LOCATION:CMS\, MR13
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