The eccentric connectivity index of armchair polyhex nanotubes

Mahboubeh Saheli, Ali Reza Ashrafi

Abstract


The eccentric connectivity index ξ(G) of the graph G is defined as ξ(G) = Σu∈V(G) deg(u)ε(u) where deg(u) denotes the degree of vertex u and ε(u) is the largest distance between u and any other vertex v of G. In this paper an exact expression for the eccentric connectivity index of an armchair polyhex nanotube is given.

Keywords


eccentric connectivity index; armchair nanotube

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References


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DOI: http://dx.doi.org/10.20450/mjcce.2010.175

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