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VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Obstruction for a virtual C^2 action on the circle
DTSTART:20170427T130000
DTEND:20170427T140000
DTSTAMP:20260509T042843Z
UID:b18685915d454d44d8997cf911dff3bbc682b7f9e3d14dc1d743928a
CATEGORIES:Conferences - Seminars
DESCRIPTION:Sang-Hyun Kim Seoul National University\nWhen does a group vir
 tually admit a faithful C^2 action on the circle? We provide an obstructio
 n using a RAAG. Examples include all (non-virtually-free) mapping class gr
 oups\, Out(Fn) and Torelli groups. This answers a question by Farb. (Joint
  work with Hyungryul Baik and Thomas Koberda)
LOCATION:MA 12
STATUS:CONFIRMED
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