Note on a new coloring number of a graph
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P. HorΓ‘k; J. Ε irΓ‘Ε
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Article
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1980
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John Wiley and Sons
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English
β 112 KB
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## Abstract The distance coloring number __X__~__d__~(__G__) of a graph __G__ is the minimum number __n__ such that every vertex of __G__ can be assigned a natural number __m__ β€ __n__ and no two vertices at distance __i__ are both assigned __i__. It is proved that for any natural number __n__ ther