3 papers
math.CO2026
The Chromatic Symmetric Function for Unicyclic Graphs
Aram Bingham, Lisa Johnston, Colin Lawson +3
Motivated by the question of which structural properties of a graph can be recovered from the chromatic symmetric function (CSF), we study the CSF of connected unicyclic graphs. Wh…
math.CO2026
Uncrowding the 5-Vertex Model: RSK and Crystal Structures
Lisa Johnston, Evuilynn Nguyen, Anne Schilling
While the uncrowding algorithm on set-valued tableaux has long been instrumental in proving the Schur positivity of stable symmetric Grothendieck polynomials, lattice models have e…
math.CO2024
The immersion poset on partitions
Lisa Johnston, David Kenepp, Evuilynn Nguyen +4
We introduce the immersion poset on partitions, defined by if and only if is mo…