Harmonious coloring on double star graph families
J. Vernold Vivin, Mathiyazhagan Venkatachalam, K. Kaliraj · Tamkang Journal of Mathematics · 2012
In this present paper, we have proved for the line graph of double star graph, the harmonious chromatic number and the achromatic number are equal. As a motivation this work can be extended by classifying the different families of graphs for which these two numbers are equal.