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Coloration des graphes de reines
Authors:Michel Vasquez
Institution:Centre de recherche LGI2P, École des mines d''Alès, parc scientifique Georges-Besse, 30035 Nîmes cedex 1, France
Abstract:Until 2003 no chromatic numbers (χn) for the queen graphs were available for n>9 except where n is not a multiple of 2 or 3. In this research announcement we present an exact algorithm which provides coloring solutions for n=12,14,15,16,18,20,21,22,24,26,28 and 32 such as χn=n. Then we prove that there exists an infinite number of values for n such that n=2p or n=3p, and χn=n. To cite this article: M. Vasquez, C. R. Acad. Sci. Paris, Ser. I 342 (2006).
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