
doi: 10.1007/bf02831929
Combining the notions of circular colorings [see \textit{X. Zhu}, Discrete Math. 229, 371--410 (2001; Zbl 0973.05030)] and of list colorings [see \textit{N. Alon} and \textit{M. Tarsi}, Combinatorica 12, 125--134 (1992; Zbl 0756.05049)] in an obvious way the authors introduce circular list colorings of graphs. The corresponding circular list chromatic number \(\chi_{c,l}(G)\) (also called circular choosability) of a graph \(G\) is investigated for outerplanar graphs and for wheels. The results are \(\chi_{c,l}(G)\leq 2+{1\over n}\) for outerplanar graphs \(G\) of girth \(\geq 2n+ 2\) and \(\chi_{c,l}(W_{2k+1})= 4\) for odd wheels.
outerplanar graph, Coloring of graphs and hypergraphs, Edge subsets with special properties (factorization, matching, partitioning, covering and packing, etc.), wheel, circular choosability circular chromatic number
outerplanar graph, Coloring of graphs and hypergraphs, Edge subsets with special properties (factorization, matching, partitioning, covering and packing, etc.), wheel, circular choosability circular chromatic number
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