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SUMMARY:Vasu Tewari (University of Hawaii)
DTSTART:20221027T190000Z
DTEND:20221027T200000Z
DTSTAMP:20260423T024647Z
UID:Matroids/22
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Matroids/22/
 ">Quotienting by quasisymmetric polynomials</a>\nby Vasu Tewari (Universit
 y of Hawaii) as part of Matroids - Combinatorics\, Algebra and Geometry Se
 minar\n\nLecture held in Room 210 The Fields Institute.\n\nAbstract\nWe in
 troduce a new basis for the polynomial ring which has its genesis in the c
 omputation of the cohomology class of the permutahedral variety. We will s
 ee that this basis is very well-behaved in regards to reduction modulo the
  ideal of quasisymmetric polynomials. This has interesting ramifications o
 f a discrete-geometric flavour that we will discuss -- for instance\, a mu
 ltivariate analogue of mixed Eulerian numbers comes up naturally\, amongst
  other things. \nJoint with Philippe Nadeau (CNRS and Univ. Lyon).\n
LOCATION:https://researchseminars.org/talk/Matroids/22/
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