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UID:20250704T213034EDT-0116uvlgwV@132.216.98.100
DTSTAMP:20250705T013034Z
DESCRIPTION:Left-orderable 3-manifold groups\, taut foliations and contact 
 structures.\n\nA group G is called left-orderable if there exists a strict
  total order on G which is invariant under the left-multiplication. Given 
 an irreducible 3-manifold M\, it is conjectured that the following three s
 tatements are equivalent: 1) $pi_1(M)$ is left-orderable. 2) M admits a co
 -orientable taut foliation. 3) M is not Heegaard Floer ``minimal''. The im
 plication from 2) to 3) was established by utilizing a contact structure t
 hat is close to a given taut foliation. In this talk\, I will discuss how 
 contact structures could also play a role in studying the interconnection 
 between 1) and 2) in general\, and show applications to branched covers of
  the 3-sphere. This is joint work with Steve Boyer.\n
DTSTART:20171103T150000Z
DTEND:20171103T160000Z
LOCATION:Room PK-5115 \, CA\, Pavillon President-Kennedy
SUMMARY:Ying Hu\, CIRGET
URL:/mathstat/channels/event/ying-hu-cirget-282282
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