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SUMMARY:Smoothing finite group actions on three-manifolds - John Pardon\, 
 Princeton
DTSTART:20190306T160000Z
DTEND:20190306T170000Z
UID:TALK115369@talks.cam.ac.uk
CONTACT:Ivan Smith
DESCRIPTION:There exist continuous finite group actions on three-manifolds
  which are not smoothable\, in the sense that they are not smooth with res
 pect to any smooth structure.  For example\, Bing constructed an involutio
 n of the three-sphere whose fixed set is a wildly embedded two-sphere.  Ho
 wever\, one can still ask whether every continuous finite group action on 
 a three-manifold can be uniformly approximated by a smooth action.  We dis
 cuss an affirmative solution to this question\, based on the author's work
  on the Hilbert--Smith conjecture in dimension three.
LOCATION:MR13
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