The t-Tone Chromatic Number of Random Graphs

A proper 2-tone k-coloring of a graph is a labeling of the vertices with elements from (formula presented.) such that adjacent vertices receive disjoint labels and vertices distance 2 apart receive distinct labels. The 2-tone chromatic number of a graph G, denoted τ ₂(G) is the smallest k such that G admits a proper 2-tone k coloring. In this paper, we prove that w.h.p. for (formula presented.) where X represents the ordinary chromatic number. For sparse random graphs with p = c/n, c constant, we prove that (formula presented.) where Δ represents the maximum degree. For the more general concept of t-tone coloring, we achieve similar results.