Geodesic
Half-chromatic number of graph
Diskretnyj analiz i issledovanie operacij, Tome 20 (2013) no. 1, pp. 3-11.

Voir la notice de l'article provenant de la source Math-Net.Ru

The notion of a half-chromatic number is introduced for graphs with a non-empty set of edges. It is proved that the difference between the half-chromatic number and a half of the chromatic number is at most 1. Bibliogr. 5.
Keywords: chromatic number, half-chromatic number, injective coloring. 
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V. G. Vizing. Half-chromatic number of graph. Diskretnyj analiz i issledovanie operacij, Tome 20 (2013) no. 1, pp. 3-11. http://geodesic.mathdoc.fr/item/DA_2013_20_1_a0/

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