On eccentric connectivity index

Details On eccentric connectivity index On eccentric connectivity index

2010-07-14

arxiv.org/abs/1007.2235v1

MATCH Commun. Math. Comput. Chem. 63 (2010) 181-198

Mathematics

Combinatorics

18 pages, 2 figures

Scientific paper

The eccentric connectivity index, proposed by Sharma, Goswami and Madan, has been employed successfully for the development of numerous mathematical models for the prediction of biological activities of diverse nature. We now report mathematical properties of the eccentric connectivity index. We establish various lower and upper bounds for the eccentric connectivity index in terms of other graph invariants including the number of vertices, the number of edges, the degree distance and the first Zagreb index. We determine the n-vertex trees of diameter with the minimum eccentric connectivity index, and the n-vertex trees of pendent vertices, with the maximum eccentric connectivity index. We also determine the n-vertex trees with respectively the minimum, second-minimum and third-minimum, and the maximum, second-maximum and third-maximum eccentric connectivity indices for

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