List Colouring and Partial List Colouring of Graphs On-line

In this paper, we investigate the problem of graph list colouring in the on-line setting. We provide several results on paintability of graphs in the model introduced by Schauz [18] and Zhu [25]. We prove that the on-line version of Ohba’s conjecture is true for the class of planar graphs. We show that the conjecture for partial list colouring on-line holds for several graph classes, namely claw-free graphs, maximal planar graphs, series-parallel graphs, and chordal graphs.

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