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TZID:Europe/Vienna
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DTSTART:20190331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
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DTSTART:20181028T020000
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BEGIN:VEVENT
DTSTAMP:20200804T233616Z
UID:5c2cb7b298aad525593101@ist.ac.at
DTSTART:20190123T140000
DTEND:20190123T170000
DESCRIPTION:Speaker: Joel Kamnitzer\nhosted by Tamas Hausel\nAbstract: Give
n a representation of a reductive group\, Braverman-Finkelberg-Nakajima ha
ve defined a remarkable Poisson variety called the Coulomb branch. Their
construction of this space was motivated by considerations from supersymme
tric gauge theories and symplectic duality. The coordinate ring of this C
oulomb branch is defined as a kind of cohomological Hall algebra\; thus it
makes sense to develop a type of "Springer theory" to define modules over
this algebra. In this talk\, we will explain this BFN Springer theory an
d give many examples. In the toric case\, we will see a beautiful combina
torics of polytopes. In the quiver case\, we will see connections to the
representations of quivers over power series rings.And in general\, we wil
l explore the relations between this Springer theory and quasimap spaces.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
T Austria
ORGANIZER:sdanzing@ist.ac.at
SUMMARY:BFN Springer theory
URL:https://talks-calendar.app.ist.ac.at/events/1763
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