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On packing chromatic number of subcubic outerplanar graphs

Abstract : The question of whether subcubic graphs have finite packing chromatic number or not is still open although positive responses are known for some subclasses, including subcubic trees, base-3 Sierpiski graphs and hexagonal lattices. In this paper, we answer positively to the question for some subcubic outerplanar graphs. We provide asymptotic bounds depending on structural properties of the weak dual of the outerplanar graphs and determine sharper bounds on some classes of subcubic outerplanar graphs.
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Contributor : Nicolas Gastineau <>
Submitted on : Thursday, May 18, 2017 - 3:27:52 PM
Last modification on : Wednesday, March 11, 2020 - 12:06:03 PM


outerplanar v20170513.pdf
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  • HAL Id : hal-01489300, version 2
  • ARXIV : 1703.05023


Nicolas Gastineau, Přemysl Holub, Olivier Togni. On packing chromatic number of subcubic outerplanar graphs. 2017. ⟨hal-01489300v2⟩



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