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Eccentricity based topological indices of a hetrofunctional dendrimer

R. FAROOQ1, N. NAZIR1, M. ALI MALIK1,* , M. ARFAN1

Affiliation

  1. School of Natural Sciences, National University of Sciences and Technology, Islamabad, Pakistan

Abstract

In a molecular graph G with vertex set V , the eccentricity ec(u) of a vertex uV is the maximum distance between u and any other vertex of G . The eccentric connectivity index  (G) of G is defined by d(v)ec(v) v V   , where d(v) is a degree of vertex vV . In this paper, we consider a hetrofunctional dendrimer HFD(ei) and compute its eccentric connectivity index. Moreover, we compute some eccentricity based Zagreb indices of this dendrimer..

Keywords

Eccentricity, Eccentric-connectivity index, Zagreb index, Hetrofunctional dendrimers.

Submitted at: Sept. 28, 2015
Accepted at: Oct. 28, 2015

Citation

R. FAROOQ, N. NAZIR, M. ALI MALIK, M. ARFAN, Eccentricity based topological indices of a hetrofunctional dendrimer, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 11-12, pp. 1799-1807 (2015)