A Short Proof that Every Claw-Free Cubic Graph is (1,1,2,2)-Packing Colorable

Published 30 Dec 2025 in math.CO | (2512.24001v1)

Abstract: It was recently proved that every claw-free cubic graph admits a (1, 1, 2, 2)-packing coloring--that is, its vertex set can be partitioned into two 1-packings and two 2-packings. This result was established by Brešar, Kuenzel, and Rall [Discrete Mathematics 348 (8) (2025), 114477]. In this paper, we provide a simpler and shorter proof.

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