BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20260329T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20261025T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260308T212433Z
UID:665dbdca9d01d401146589@ist.ac.at
DTSTART:20260618T130000
DTEND:20260618T150000
DESCRIPTION:Speaker: Jianrong Li\nhosted by Tamas Hausel\nAbstract: Frenkel
  and Reshetikhin introduced q-characters for finite-dimensional representa
 tions of quantum affine algebras\, providing a fundamental tool in their r
 epresentation theory. Together with Tomasz Przezdziecki\, we defined bound
 ary q-characters for finite dimensional representations of quantum affine 
 symmetric pairs of split and quasi-split types. In this talk\, I will pres
 ent a new joint work Tomasz Przezdziecki on evaluation modules for split q
 uantum affine symmetric pairs. By computing the action of generators in Lu
  and Wangs Drinfeld-type presentation on GelfandTsetlin bases\, we determi
 ne the spectrum of a large commutative subalgebra arising from this presen
 tation. This leads to an explicit formula for boundary analogues of q-char
 acters\, which we interpret combinatorially in terms of semistandard Young
  tableaux. Our results show that boundary q-characters share familiar feat
 ures with ordinary q-characters\, while also exhibiting new phenomena\, in
 cluding an additional symmetry.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:boosthui@ist.ac.at
SUMMARY:Jianrong Li: Boundary q-characters of finite-dimensional representa
 tions of quantum affine symmetric pairs
URL:https://talks-calendar.ista.ac.at/events/6284
END:VEVENT
END:VCALENDAR