On the \(E_k\)-Total Cordiality of Some Graphs

Qing Liu1, Zhishan Liu2, Haiping Wu3
1School of Statistics and Research Center of Applied Statistics, Jiangxi University of Finance and Economics, Nanchang 330013, P.R.China.
2Department of Mathematics, Yang-en University, Quanzhou 362014, P.R.China.
3School of Tourism and Urban Management, Jiangxi Uni- versity of Finance and Economics, Nanchang 330013, P.R.China.

Abstract

In this paper, we first provide two necessary conditions for a graph \(G \) to be \(E_k\)-cordial, then we prove that every \(P_n(n \geq 3)\) is \(E_p\)-cordial if \(p\) is odd. In the end, we discuss the \(E_2\)-cordiality of a graph \)G\) under the condition that some subgraph of \(G\) has a \(1\)-factor.