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SUMMARY:Sam Payne (University of Texas\, Austin)
DTSTART:20210210T210000Z
DTEND:20210210T220000Z
DTSTAMP:20260414T173907Z
UID:BUGeom/15
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/BUGeom/15/">
 Top weight cohomology of M_g</a>\nby Sam Payne (University of Texas\, Aust
 in) as part of Boston University Geometry/Physics Seminar\n\nLecture held 
 in Zoom meeting ID: 974 5641 9902.\n\nAbstract\nI will discuss an approach
  to studying the top-graded piece of the weight filtration on open moduli 
 spaces with suitable toroidal compactifications\, inspired by tropical and
  non-archimedean analytic geometry.  One application of this approach is t
 he recent proof\, joint with Chan and Galatius\, that the dimension of H^{
 4g-6}(M_g\, Q) grows exponentially with g. This growth was unexpected and 
 disproves conjectures of Church-Farb-Putman and Kontsevich.\n
LOCATION:https://researchseminars.org/talk/BUGeom/15/
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