3 papers
math.CO2026
A Closer Look at Chapoton's q-Ehrhart Polynomials
Matthias Beck, Thomas Kunze
If is a lattice polytope (i.e., is the convex hull of finitely many integer points in ), Ehrhart's famous theorem (1962) asserts that the…
math.CO2026
-Chromatic polynomials
Esme Bajo, Matthias Beck, Andrés R. Vindas-Meléndez
We study a -version of the chromatic polynomial of a given graph , namely, \[ Ï_G^λ(q,n) \ := \sum_{\substack{\text{proper colorings}\\ c\,:\,V\to[n]}} q^{ \sum_{ v \…
math.CO2025
Generating functions of -chromatic polynomials
Matthias Beck, Benjamin Braun, Alvaro Cornejo
Given a graph and a linear form , Bajo et al. (2025) introduced the -chromatic polynomial $Ï_G^λ(q,n) := \sum q^{\sum_{v \in V} λ_v c(v)…