(2 + ?)-Coloring of planar graphs with l
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Klostermeyer, William; Zhang, Cun Quan
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Article
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2000
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John Wiley and Sons
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English
β 258 KB
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The odd-girth of a graph is the length of a shortest odd circuit. A conjecture by Pavol Hell about circular coloring is solved in this article by showing that there is a function f ( ) for each : 0 < < 1 such that, if the odd-girth of a planar graph G is at least f ( ), then G is (2 + )-colorable. N