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DTSTART:20240310T070000
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DTSTART:20241103T060000
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DTSTART;TZID=America/Toronto:20241114T140000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-an
 d-enumerative-combinatorics-seminar-colleen
SUMMARY:Algebraic and enumerative combinatorics seminar-Colleen Robichaux
CLASS:PUBLIC
DESCRIPTION:TITLE:Vanishing of Schubert coefficients\n\nSpeaker\n Colleen R
 obichaux\n\nAffiliation\n UCLA\n\nLocation\n MC 5479\n\n ABSTRACT: Schube
 rt coefficients are nonnegative integers that arise\nin Algebraic Geometry
  and play a central role in Algebraic\nCombinatorics. It is a major open p
 roblem whether they have a\ncombinatorial interpretation\, i.e\, they are 
 in #P. In this talk we\ndiscuss the closely related problem of the vanishi
 ng of Schubert\ncoefficients. We prove that this vanishing problem is rath
 er low in\nthe polynomial hierarchy and discuss implications of this resul
 t.\n\nThis is joint work with Igor Pak.\n\nTHERE WILL BE A PRE-SEMINAR PRE
 SENTING RELEVANT BACKGROUND AT THE\nBEGINNING GRADUATE LEVEL STARTING AT 1
 PM\,
DTSTAMP:20260403T084314Z
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