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The Szeged, vertex PI, first and second Zagreb indices of corona product of graphs

Yarahmadi Zahra (Department of Mathematics, Faculty of Science, Khorramabad Branch, Islamic Azad, University, Khorramabad, I.R. Iran)
Ashrafi Reza Ali (Department of Mathematics, Statistics and Computer Science, Faculty of Science, University of Kashan, Kashan, I.R. Iran + School of Mathematics, Institute for Research in Fundamental Sciences (IPM), Tehran, I.R. Iran)

The corona product GoH of two graphs G and H is defined as the graph obtained by taking one copy of G and |V(G)| copies of H and joining the i-th vertex of G to every vertex in the i−th copy of H. In this paper, the Szeged, vertex PI and the first and second Zagreb indices of corona product of graphs are computed.

Keywords: Corona product, Wiener index, Szeged index, vertex PI index, first and second Zagreb index