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Speaker:
Grigori Avramidi
Affiliation:
MPIM
Date:
Mon, 25/02/2019 - 16:30 - 18:00
Location:
MPIM Lecture Hall
Parent event:
MPIM Topology Seminar I will explain what the validity of surgery in dimension 4 would imply about groups (mostly free groups) acting on the 3-sphere, and describe some interesting examples of such actions.
This is an expository talk about some stuff (mostly due to Freedman) from the 1980's.
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