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SUMMARY:Asaf Hadari (University of Hawaii at Manoa)
DTSTART:20201021T190000Z
DTEND:20201021T200000Z
DTSTAMP:20260423T024830Z
UID:McGillGGT/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/McGillGGT/7/
 ">Mapping class groups that do not virtually surject to the integers</a>\n
 by Asaf Hadari (University of Hawaii at Manoa) as part of McGill geometric
  group theory seminar\n\n\nAbstract\nMapping class groups of surfaces of g
 enus at least 3 are perfect\, but their finite-index subgroups need not be
 &mdash\;they can have non-trivial abelianizations. A well-known conjecture
  of Ivanov states that a finite-index subgroup of a mapping class group of
  a sufficiently high\ngenus has finite abelianization. We will discuss a p
 roof of this conjecture\, which goes through an equivalent representation-
 theoretic form of the conjecture due to Putman and Wieland.\n
LOCATION:https://researchseminars.org/talk/McGillGGT/7/
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