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- M. Ghorbani
- 2009

A topological index of a graph G is a numeric quantity related to G which is invariant under automorphisms of G. A new counting polynomial, called the "Omega" W(G, x) polynomial, was recently proposed by Diudea on the ground of quasi-orthogonal cut "qoc" edge strips in a polycyclic graph. In this paper, the vertex PI, Szeged and omega polynomials of carbon… (More)

- Md. Abu Nayeem, Anita Pal, +7 authors M. A. Hossein-Zadeh
- 2015

The eccentric connectivity index of a graph is defined as the sum of the products of eccentricity with the degree of vertices over all vertices of the graph, and the modified eccentric connectivity index of a graph is defined as the sum of the products of eccentricity with the total degree of neighbouring vertices over all vertices of the graph. In this… (More)

- Mehrzad Ghorbani, Ali Reza Soheili
- Applied Mathematics and Computation
- 2006

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