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SEMINARS
Vertices of Schubitopes
时间  Datetime
2020-01-12 10:00 — 11:00 
地点  Venue
440
报告人  Speaker
Jiuyu Fan (范久瑜)
单位  Affiliation
SicCuan University
邀请人  Host
Jun Ma
报告摘要  Abstract

Schubitopes were introduced by Monical, Tokcan and Yong as a specific family of generalized permutohedra. Important cases of Schubitopes include the Newton polytopes of Schubert polynomials and key polynomials. We develop a combinatorial rule to generate the vertices of Schubitopes. As an application, we show that the vertices of the Newton polytope of a key polynomial are generated by permutations in a lower interval in the Bruhat order, settling a conjecture of Monical, Tokcan and Yong.