ABSTRACT This work aims to study the equitable total coloring into subfamilies of regular graphs. For this purpose, we use some relationships between equitable total coloring and range (vertex) coloring in some regular graphs. The concept of range coloring of order k was first presented by (Lozano et al., 2009). In this paper, we shows that if a regular graph G admits an equitable range coloring c of order Δ with (Δ+1) colors then there is an equitable total coloring of G - with the same set of colors - that extends c. We also show that there are infinite graphs satisfying this theorem. Such graphs are called Harmonics. We generate Harmonic Graphs which are Cartesian products of cycles and their complements. These graphs are regular and they admit an equitable total coloring under the above conditions.

Uma rede de interconexão é uma estrutura composta por um conjunto P de n > 1 processadores e um conjunto T de ligações, satisfazendo certas condições. Neste trabalho será introduzido o conceito de coloração total equilibrada. Este conceito é utilizado para oferecer uma representação natural para o processamento paralelo em redes de conexão. Uma coloração total equilibrada é apresentada para as principais topologias de redes de conexão, com no máximo D +2 cores, satisfazendo assim uma conjectura de Vizing.

An interconnection network is a structure including a set P of n > 1 processors and a set T of connections of the elements of P, satisfying certain conditions. In this work it will be introduced the concept of equitable total coloring of a graph. This concept is shown to be a natural representation for parallel processing in interconnection networks. For the most common interconnection network topologies an equitable total coloring is presented with at most D +2 colors, thus satisfying a conjecture of Vizing.