Steiner k-hyper Wiener index of graph products

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  • 1. School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China

Received date: 2021-12-06

  Online published: 2025-03-08

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, 2025, All rights reserved. Unauthorized reproduction is prohibited.

Abstract

Let G be a connected graph. For $ 2\leqslant k\leqslant n-1$, the Steiner k-hyper Wiener index $ {\rm SWW}_{k}(G)$ is defined as ${\rm SWW}_{k}(G)=\frac{1}{2}\sum_{S\subseteq V(G), |S|=k}d_{G}(S)+\frac{1}{2}\sum_{S\subseteq V(G), |S|=k}d_{G}(S)^{2} $, where $d_{G}(S) $ is the Steiner distance of S, means the minimum size of a connected subgraph which vertex set contains S. In this paper, we establish expressions for the Steiner k-hyper Wiener index on the join and lexicographical product of graphs and give lower bounds for the Steiner $k$-hyper Wiener index on cartesian, cluster and corona product of graphs.

Cite this article

Chaoping WANG, Mengmeng LIU . Steiner k-hyper Wiener index of graph products[J]. Operations Research Transactions, 2025 , 29(1) : 216 -224 . DOI: 10.15960/j.cnki.issn.1007-6093.2025.01.018

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