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UID:20260502T080548EDT-4587EldWPJ@132.216.98.100
DTSTAMP:20260502T120548Z
DESCRIPTION:Title: Coxeter and Schubert combinatorics of μ-Involutions\n\nA
 bstract: The variety of complete quadrics is the wonderful compactificatio
 n of GLn/On and admits a cell decomposition into Borel orbits indexed by c
 ombinatorial objects called μ–involutions. We study Coxeter–theoretic prop
 erties of μ–involutions with results including a combinatorial description
  for their atoms\, an exchange lemma\, and transposition-like operators th
 at characterize their Bruhat order. The corresponding orbit closures can b
 e realized inside the flag variety. In this setting\, we study the cohomol
 ogy representatives of these orbits\, which are\, up to a scalar\, the μ–i
 nvolution Schubert polynomials. We expand μ–involution Schubert polynomial
 s as a multiplicity-free sum of ν–involution Schubert polynomials when ν r
 efines μ and provide recurrences analogous to Monk’s rule for Schubert pol
 ynomials. This is joint work with Zachary Hamaker.\n\nLocation: PK-4323 of
  UQAM’s Président-Kennedy Building.\n
DTSTART:20260508T150000Z
DTEND:20260508T160000Z
SUMMARY:Jack Chou (University of Florida)
URL:/biology/channels/event/jack-chou-university-flori
 da-372798
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