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math.CO2023
Demazure product of permutations and hopping
Tina Li, Suho Oh, Edward Richmond +2
The Demazure product (also goes by the name of 0-Hecke product or the greedy product) is an associative operation on Coxeter groups with interesting properties and important applic…
math.CO2023
The Isomorphism Problem for cominuscule Schubert Varieties
Edward Richmond, Mihail Tarigradschi, Weihong Xu
Cominuscule flag varieties generalize Grassmannians to other Lie types. Schubert varieties in cominuscule flag varieties are indexed by posets of roots labeled long/short. These la…