The Wiener index of a connected graph G, denoted by W(G), is defined as $½{\sum }_{u,v\in V\left(G\right)}{d}_G(u,v)$. Similarly, the hyper-Wiener index of a connected graph G, denoted by WW(G), is defined as $½W\left(G\right)+¼{\sum }_{u,v\in V\left(G\right)}d{²}_G(u,v)$. The vertex Padmakar-Ivan (vertex PI) index of a graph G is the sum over all edges uv of G of the number of vertices which are not equidistant from u and v. In this paper, the exact formulae for Wiener, hyper-Wiener and vertex PI indices of the strong product $G⊠K_{m₀,m₁,...,m_{r-1}}$, where $K_{m₀,m₁,...,m_{r-1}}$ is the complete multipartite graph with partite sets of sizes...

The Wiener index, denoted by W(G), of a connected graph G is the sum of all pairwise distances of vertices of the graph, that is, $W\left(G\right)=½{\Sigma }_{u,v\in V\left(G\right)}d(u,v)$. In this paper, we obtain the Wiener index of the tensor product of a path and a cycle.