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arXiv · 1002.4210

Unique-maximum and conflict-free colorings for hypergraphs and tree graphs

Panagiotis Cheilaris·Balázs Keszegh·Dömötör Pálvölgyi
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Abstract

We investigate the relationship between two kinds of vertex colorings of hypergraphs: unique-maximum colorings and conflict-free colorings. In a unique-maximum coloring, the colors are ordered, and in every hyperedge of the hypergraph the maximum color appears only once. In a conflict-free coloring, in every hyperedge of the hypergraph there is a color that appears only once. We define corresponding unique-maximum and conflict-free chromatic numbers and investigate their relationship in arbitrary hypergraphs. Then, we concentrate on hypergraphs that are induced by simple paths in tree graphs.

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Panagiotis Cheilaris, Balázs Keszegh, Dömötör Pálvölgyi. 2010-02-22. Unique-maximum and conflict-free colorings for hypergraphs and tree graphs. https://arxiv.org/abs/1002.4210

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