Kostochka–Yu equitable list-coloring Ore conjecture

For a graph GG, define its Ore-degree by

Θ(G):=max{d(x)+d(y):xyE(G)}.\Theta(G):=\max\{d(x)+d(y):xy\in E(G)\}.

A graph is equitably kk-choosable if every kk-list assignment admits a proper coloring in which each color class has size at most V(G)/k\lceil|V(G)|/k\rceil. Kostochka–Yu's conjecture. Every graph GG is equitably (1+0.5Θ(G))(1+0.5\Theta(G))-choosable. The source reports partial results for graphs with Θ(G)6\Theta(G)\leq6.

Sources & referencesView supporting material

Primary source

H. A. Kierstead, Alexandr Kostochka and Zimu Xiang, “Results and Problems on Equitable Coloring of Graphs”, arXiv:2504.14711 (2025).

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