University of Kashan Iranian Journal of Mathematical Chemistry 2228-6489 1 Issue 1 (Special Issue on the Role of PI Index in Nanotechnology) 2010 04 01 Computing PI and Hyper–Wiener Indices of Corona Product of some Graphs 131 135 5144 10.22052/ijmc.2010.5144 EN M. TAVAKOLI University of Tehran, Islamic Republic of Iran H. YOUSEFI–AZARI University of Tehran, Islamic Republic of Iran Journal Article 2014 04 20 Let G and H be two graphs. The corona product G o H is obtained by taking one copy of G and |V(G)| copies of H; and by joining each vertex of the i-th copy of H to the i-th vertex of G, i = 1, 2, …, |V(G)|. In this paper, we compute PI and hyper–Wiener indices of the corona product of graphs. Topological indices PI index Hyper−Wiener index Wiener index https://ijmc.kashanu.ac.ir/article_5144_046652966c70f5ddcb1c002144947c5b.pdf