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» The chromatic covering number of a graph

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DM
2008

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Coloring the Cartesian sum of graphs

14 years 12 months ago

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For graphs G and H, let G H denote their Cartesian sum. This paper investigates the chromatic number and the circular chromatic number for GH. It is proved that (G H) max{ c(G)...

Daphne Der-Fen Liu, Xuding Zhu

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EJC
2008

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Fractional chromatic number of distance graphs generated by two-interval sets

14 years 12 months ago

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Let D be a set of positive integers. The distance graph generated by D, denoted by G(Z, D), has the set Z of all integers as the vertex Supported in part by the National Science ...

Daphne Der-Fen Liu, Xuding Zhu

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DM
2000

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Chromatically unique bipartite graphs with low 3-independent partition numbers

14 years 11 months ago

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For integers p; q; s with p

Feng Ming Dong, Khee Meng Koh, Kee L. Teo, Charles...

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