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SUMMARY:Xuhua He (Chinese University of Hong Kong)
DTSTART:20221109T130000Z
DTEND:20221109T143000Z
DTSTAMP:20260423T052455Z
UID:algsjtu/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/algsjtu/4/">
 Total positivity on the twisted product of flag varieties</a>\nby Xuhua He
  (Chinese University of Hong Kong) as part of SJTU algebra seminar\n\n\nAb
 stract\nIn this talk\, we consider the twisted product of flag varieties\,
  which include as special cases the double flag varieties\, the Bott-Samel
 son varieties\, and the Braid varieties. We will explain how to use the (s
 ingle) flag variety of Kac-Moody groups to study the twisted product of fl
 ag varieties of reductive groups. As consequence\, we will establish the c
 ellular decomposition and regularity theorem of totally positive structure
  on the twisted product of flag varieties. In particular\, we answer an op
 en problem of Fomin and Zelevinsky on the double Bruhat cells. This talk i
 s based on a joint work with Huanchen Bao (NUS).\n\nzoom id: 971 8258 1676
 \npassword: 498175\nLink: https://ucr.zoom.us/j/97182581676?pwd=enJybUJWWF
 N5YWVwSTVZanZJTkVJUT09\n
LOCATION:https://researchseminars.org/talk/algsjtu/4/
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