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TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20190331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
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DTSTART:20181028T020000
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BEGIN:VEVENT
DTSTAMP:20190219T050323Z
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
will explore the relations between this Springer theory and quasimap spac
es.
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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