On Topological Invariants of the Multicolorings of the Product and Composition of Graphs Author: Shih-Jen Lee, Son-Yen Wu(Institute of Mathematics College of Sciences)

Abstract：

Berge [3] has studied some properties of multicoloring in a graph. In this pqper, we study the multicoloring in the product and composition of graphs. We show that if G has even vertices with the first class [5] , then the multicoloring index of G is equal to the chromatic index of G. We also show that if G₁ and G₂ are both multicolorable, then G₁ × G₂ and G₁[G₂] are also multicolorable.

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