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DTSTART:19700329T010000
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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Crepant transformations for nonabelian GIT quotien
 ts - Rachel Webb (Cornell University)
DTSTART;TZID=Europe/London:20240117T100000
DTEND;TZID=Europe/London:20240117T104500
UID:TALK209395AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/209395
DESCRIPTION:Geometric invariant theory (GIT) is a recipe for t
 aking a quotient of a vector space by a linear act
 ion of a reductive group. The quotient also depend
 s on a character of the group\, though different c
 haracters will yield birational schemes (or stacks
 ). I will explain one way to relate the Gromov-Wit
 ten theory of birational targets that arise in thi
 s fashion---at least\, I will explain one such exa
 mple\, namely the Grassmannian flop. This work is 
 joint with Wendelin Lutz and Qaasim Shafi.
LOCATION:Seminar Room 2\, Newton Institute
CONTACT:
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