OJDM  Vol.10 No.1 , January 2020
Some Results on Cordial Digraphs
Abstract: A digraph is a graph in which each edge has an orientation. A linear directed path, , is a path whose all edges have the same orientation. A linear simple graph is called directed cordial if it admits 0 - 1 labeling that satisfies certain condition. In this paper, we study the cordiality of directed paths  and their second power . Similar studies are done for  and the join  . We show that and  are directed cordial. Sufficient conditions are given to the join   to be directed cordial.
Cite this paper: Al-Shamiri, M. , Nada, S. , Elrokh, A. and Elmshtaye, Y. (2020) Some Results on Cordial Digraphs. Open Journal of Discrete Mathematics, 10, 4-12. doi: 10.4236/ojdm.2020.101002.

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