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Thursday, September 24, 2020

Thursday, September 24, 2020 — 1:00 PM EDT

Title: Sign variations and descents

Speaker: Aram Dermenjian Affiliation: York University Zoom: Contact Karen Yeats

Abstract:

In this talk we consider a poset structure on projective sign vectors. We show that the order complex of this poset is partitionable and give an interpretation of the h-vector using type B descents of the type D Coxeter group.

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