A counterexample to the Ross--Yong conjecture for Grothendieck polynomials
Colleen Robichaux
Published: 2024/3/21
Abstract
We give a minimal counterexample for a conjecture of Ross and Yong (2015) which proposes a K-Kohnert rule for Grothendieck polynomials. We conjecture a revised version of this rule. We then prove both rules hold in the $321$-avoiding case.