On the r-Dynamic Chromatic Numberof Corona Product of Star Graph

Abstract

A proper k coloring of graph G such that the neighbors of any vertex v ∈ V (G) where at least min{r, d(v)} different colors is defined an r-dynamic coloring. The minimum k such that graph G has an r-dynamic k coloring is defined the r-dynamic chromatic number, denoted by χr(G). In this paper, we study the r-dynamic chromatic number of corona product of star graph.