On Second Atom-Bond Connectivity Index

نویسندگان

M. GHORBANI Shahid Rajaee Teacher Training University, I. R. Iran

M. ROSTAMI Mahallat Branch, Islamic Azad University, Iran

M. SOHRABI-HAGHIGHAT Arak University, Iran

چکیده مقاله:

The atom-bond connectivity index of graph is a topological index proposed by Estrada et al. as ABC (G)  uvE (G ) (du dv  2) / dudv , where the summation goes over all edges of G, du and dv are the degrees of the terminal vertices u and v of edge uv. In the present paper, some upper bounds for the second type of atom-bond connectivity index are computed.

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