Choosability of a weighted path and free-choosability of a cycle - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2011

Choosability of a weighted path and free-choosability of a cycle

Yves Aubry
Jean-Christophe Godin
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Résumé

A graph $G$ with a list of colors $L(v)$ and weight $\omega(v)$ for each vertex $v$ is $(L,\omega)$-colorable if one can choose a subset of $\omega(v)$ colors from $L(v)$ for each vertex $v$, such that adjacent vertices receive disjoint color sets. In this paper, we give necessary and sufficient conditions for a weighted path to be $(L,\omega)$-colorable for some list assignments $L$. Furthermore, we solve the problem of the free-choosability of a cycle.
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Dates et versions

hal-00484445 , version 1 (18-05-2010)
hal-00484445 , version 2 (20-03-2011)
hal-00484445 , version 3 (16-05-2011)

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Citer

Yves Aubry, Jean-Christophe Godin, Olivier Togni. Choosability of a weighted path and free-choosability of a cycle. 2011. ⟨hal-00484445v2⟩
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