Opuscula Math. 24, no. 2 (2004), 171-175

Opuscula Mathematica

A note on a list colouring of hypergraphs

Ewa Drgas-Burchardt

Abstract. In the note we present two results. The first of them gives a sufficient condition for a colouring of a hypergraph from an assigned list. It generalises the analogous fact for graphs. The second result states that for every \(k\geq 3\) and every \(l\geq 2\), a distance between the list chromatic number and the chromatic number can be arbitrarily large in the class of \(k\)-uniform hypergraphs with the chromatic number bounded below by \(l\). A similar result for \(k\)-uniform, \(2\)-colorable hypergraphs is known but the proof techniques are different.

Keywords: hypergraph, list colouring.

Mathematics Subject Classification: 05C65, 05C15.

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Ewa Drgas-Burchardt, A note on a list colouring of hypergraphs, Opuscula Math. 24, no. 2 (2004), 171-175

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