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Erschienen in: Journal of Combinatorial Optimization 2/2020

31.10.2019

The Wiener index of hypergraphs

verfasst von: Xiangxiang Liu, Ligong Wang, Xihe Li

Erschienen in: Journal of Combinatorial Optimization | Ausgabe 2/2020

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Abstract

The Wiener index is defined to be the sum of distances between every unordered pair of vertices in a connected hypergraph. In this paper, we first study how the Wiener index of a hypergraph changes under some graft transformations. For \(1\le m\le n-1\), we obtain the unique hypertree that achieves the minimum (or maximum) Wiener index in the class of hypertrees on n vertices and m edges. Then we characterize the unique hypertrees on n vertices with first three smallest Wiener indices, and the unique hypertree (not 2-uniform) with maximum Wiener index, respectively. In addition, we determine the unique hypergraph that achieves the minimum Wiener index in the class of hypergraphs on n vertices and p pendant edges.

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Metadaten
Titel
The Wiener index of hypergraphs
verfasst von
Xiangxiang Liu
Ligong Wang
Xihe Li
Publikationsdatum
31.10.2019
Verlag
Springer US
Erschienen in
Journal of Combinatorial Optimization / Ausgabe 2/2020
Print ISSN: 1382-6905
Elektronische ISSN: 1573-2886
DOI
https://doi.org/10.1007/s10878-019-00473-3

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