Unitary Cayley Graphs over Ring of Dual Numbers

Mohammad Abudayah1, Hasan Al-Ezeh2
1Department of Mathematics German Jordanian University
2Department of Mathematics University of Jordan

Abstract

This paper studies the unitary Cayley graph associated with the ring of dual numbers, \(\mathbb{Z}_n[\alpha]\). It determines the exact diameter, vertex chromatic number, and edge chromatic number. In addition, it classifies all perfect graphs within this class.

Keywords: Ring of Dual Numbers, Unitary Cayley Graph, Chro- matic, Clique, Perfect Graph. AMS Subject Classification: 05025, 05C12, 05C17.