3 papers
math.CO2026
Kohnert posets and polynomials of northeast diagrams
Aram Bingham, Beth Anne Castellano, Kimberly P. Hadaway +4
Kohnert polynomials and their associated posets are combinatorial objects with deep geometric and representation theoretic connections, generalizing both Schubert polynomials and t…
math.CO2025
When is the chromatic quasisymmetric function symmetric?
Maria Gillespie, Joseph Pappe, Kyle Salois
We investigate the problem of when a chromatic quasisymmetric function (CQF) of a graph is in fact symmetric. We first prove the remarkable fact that if a product of…
math.CO2024
Higher Specht bases and -series for the cohomology rings of certain Hessenberg varieties
Kyle Salois
It is conjectured (following the Stanley-Stembridge conjecture) that the cohomology rings of regular semisimple Hessenberg varieties yield permutation representations, but the deco…