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k-Coloring is Faster than Computing the Chromatic Number

Hacker News Top ↗ · 2026-07-31 Cached

This paper presents a randomized algorithm that solves k-coloring on n-vertex graphs in time (2-ε_k)^n for every fixed k, resolving a long-standing open problem in exponential-time algorithms. It builds on hypergraph containers and list-coloring reductions.

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