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Speaker:
David Gabai
Affiliation:
Princeton
Date:
Mon, 16/09/2019 - 10:00 - 10:50
Location:
MPIM Lecture Hall
Parent event:
Workshop on 4-manifolds, September 16 - 20, 2019 The light bulb lemma more or less asserts, subject to a certain hypothesis, that if a surface $S$ has a transverse sphere, then a tube linking $S$ can be isotopically pulled across $S$. Is the failure of this certain hypothesis ever interesting? We offer some preliminary thoughts.
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