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SUMMARY:Kai-Uwe Bux
DTSTART:20210810T115000Z
DTEND:20210810T122000Z
DTSTAMP:20260417T010009Z
UID:MSR80/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MSR80/8/">An
  alternative construction for the bordification of outer space</a>\nby Kai
 -Uwe Bux as part of International Conference on Discrete groups\, Geometry
  and Arithmetic\n\n\nAbstract\nThe Bestvina-Feighn bordification of outer 
 space is analogous to the Borel-Serre\nbordification. We describe a differ
 ent construction for a homeomorphic space that is the analogue\nof Grayson
 's equivariant deformation retract of the symmetric space. The alternative
  construction\nsimplifies the analysis of connectivity properties and ther
 eby also the proof that the group of outer\nautomorphisms of a free group 
 is a virtual duality group. [This is joint work with Peter Smillie and\nKa
 ren Vogtmann.]\n
LOCATION:https://researchseminars.org/talk/MSR80/8/
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