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UID:20250919T015347EDT-1065N18xow@132.216.98.100
DTSTAMP:20250919T055347Z
DESCRIPTION:The algebra and geometry of ordered set partitions\n\nFor any p
 ositive integer $n$\, there is a graded $S_n$-module (the coinvariant alge
 bra $R_n$) and an algebraic variety (the flag variety $mathcal{F ell}(n)$)
  whose representation theoretic and geometric properties are governed by p
 ermutations in the symmetric group $S_n$. Given two positive integers $k l
 eq n$\, we study a new graded $S_n$-module $R_{n\,k}$ and a new variety $X
 _{n\,k}$ whose properties are similarly governed by ordered partitions of 
 the set ${1\, 2\, dots\, n}$ into $k$ blocks. Time permitting\, we will di
 scuss extensions of these constructions to other reflection groups as well
  as the Hecke algebra H_n(q) at generic parameter q and in the specializat
 ion q = 0. Joint with Jim Haglund\, Jia Huang\, Brendan Pawlowski\, Travis
  Scrimshaw\, and Mark Shimozono.\n
DTSTART:20180329T150000Z
DTEND:20180329T160000Z
LOCATION:Room PK-4323\, CA\, 201 Ave. President-Kennedy
SUMMARY:Brendon Rhoades\, UCSD
URL:/mathstat/channels/event/brendon-rhoades-ucsd-2862
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