A counterexample to the Ross--Yong conjecture for Grothendieck polynomials
arXiv:2403.14538
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 -avoiding case.
14 pages, minor edits, to appear in European Journal of Combinatorics