A Note on Tensor Product of Graphs

Let $G$ and $H$ be graphs. The tensor product $G\otimes H$ of $G$ and $H$ has vertex set $V(G\otimes H)=V(G)\times V(H)$, edge set $E(G\otimes H)=\{(a,b)(c,d)| ac\in E(G)\:\: and\:\: bd\in E(H)\}$. In this paper, some results on this product are obtained by which it is possible to compute the Wiener and Hyper Wiener indices of $K_n \otimes G$.