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SUMMARY:Danny Calegari (University of Chicago)
DTSTART:20200512T140000Z
DTEND:20200512T151500Z
DTSTAMP:20260423T040116Z
UID:rlgts/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/rlgts/2/">Ta
 ut foliations leafwise branch cover the 2-sphere</a>\nby Danny Calegari (U
 niversity of Chicago) as part of Regensburg low-dimensional geometry and t
 opology seminar\n\n\nAbstract\nA co-oriented foliation of an oriented 3-ma
 nifold is taut if and only if there is a map from the 3-manifold to the 2-
 sphere which is a branched cover when restricted to each leaf. I shall giv
 e two proofs of this theorem and explain its relation to theorems of Ghys 
 and Donaldson.\n
LOCATION:https://researchseminars.org/talk/rlgts/2/
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