Defective choosability of graphs without small minors.
Wood, Rupert G., Woodall, Douglas R. (2009)
The Electronic Journal of Combinatorics [electronic only]
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Wood, Rupert G., Woodall, Douglas R. (2009)
The Electronic Journal of Combinatorics [electronic only]
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Juraj Bosák (1972)
Czechoslovak Mathematical Journal
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Caro, Yair, West, Douglas B. (2009)
The Electronic Journal of Combinatorics [electronic only]
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Matematický časopis
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Discussiones Mathematicae Graph Theory
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A k-colouring of a graph G is a mapping c from the set of vertices of G to the set {1, . . . , k} of colours such that adjacent vertices receive distinct colours. Such a k-colouring is called acyclic, if for every two distinct colours i and j, the subgraph induced by all the edges linking a vertex coloured with i and a vertex coloured with j is acyclic. In other words, every cycle in G has at least three distinct colours. Acyclic colourings were introduced by Gr¨unbaum in 1973, and since...