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SUMMARY:Fumiaki Suzuki (UCLA)
DTSTART:20211024T193000Z
DTEND:20211024T200000Z
DTSTAMP:20260423T022742Z
UID:AGNES/16
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/AGNES/16/">A
 n O-acyclic variety of even index</a>\nby Fumiaki Suzuki (UCLA) as part of
  Algebraic Geometry NorthEastern Series (AGNES)\n\n\nAbstract\nI will cons
 truct a family of Enriques surfaces parametrized by P^1 such that any mult
 i-section has even degree over the base P^1. Over the function field of a 
 complex curve\, this gives the first example of an O-acyclic variety (H^i(
 X\,O)=0 for i>0) whose index is not equal to one\, and an affirmative answ
 er to a question of Colliot-Thélène and Voisin. I will also discuss appl
 ications to related problems\, including the integral Hodge conjecture and
  Murre’s question on universality of the Abel-Jacobi maps. This is joint
  work with John Christian Ottem.\n
LOCATION:https://researchseminars.org/talk/AGNES/16/
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