Results 11 to 20 of about 4,539,869 (304)

The quotients between the (revised) Szeged index and Wiener index of graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2017
Let $Sz(G),Sz^*(G)$ and $W(G)$ be the Szeged index, revised Szeged index and Wiener index of a graph $G.$ In this paper, the graphs with the fourth, fifth, sixth and seventh largest Wiener indices among all unicyclic graphs of order $n\geqslant 10$ are ...
Huihui Zhang, Jing Chen, Shuchao Li
doaj   +3 more sources

Note of the hyper-Wiener index [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The hyper-Wiener index WW of a chemical tree T is defined as the sum of the products n1n2, over all pairs υ,ν of vertices of T, where n1 and n2 are the number of vertices of T, lying on the two sides of the path which connects υ and ν.
Gutman Ivan   +2 more
doaj   +4 more sources

Peripheral Wiener index of a graph

open access: yesCommunications in Combinatorics and Optimization, 2017
The {\em eccentricity} of a vertex $v$ is the maximum distance between $v$ and any other vertex‎. ‎A vertex with maximum eccentricity is called a peripheral vertex‎.
K.P‎. ‎Narayankar, S.B‎. ‎Lokesh
doaj   +2 more sources

Five results on maximizing topological indices in graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2021
In this paper, we prove a collection of results on graphical indices. We determine the extremal graphs attaining the maximal generalized Wiener index (e.g. the hyper-Wiener index) among all graphs with given matching number or independence number.
Stijn Cambie
doaj   +1 more source

On the Wiener index of orientations of graphs [PDF]

open access: yesDiscrete Applied Mathematics, 2022
The Wiener index of a strong digraph $D$ is defined as the sum of the distances between all ordered pairs of vertices. This definition has been extended to digraphs that are not necessarily strong by defining the distance from a vertex $a$ to a vertex $b$
P. Dankelmann
semanticscholar   +1 more source

Wiener Index of Some Brooms [PDF]

open access: yesComputer Science Journal of Moldova, 2022
In the field of chemical graph theory, a Wiener (topological) index is a type of a molecular descriptor that is calculated based on the molecular graph of alkanes.
Julian D. Allagan
doaj   +1 more source

The First Zagreb Index, The Wiener Index, and The Gutman Index of The Power of Dihedral Group

open access: yesCAUCHY, 2023
Research on graphs combined with groups is an interesting topic in the field of combinatoric algebra where graphs are used to represent a group. One type of graph representation of a group is a power graph.
Evi Yunartika Asmarani   +5 more
semanticscholar   +1 more source

Wiener Index Calculation on the Benzenoid System: A Review Article

open access: yesJurnal Matematika Integratif, 2023
The Weiner index is considered one of the basic descriptors of fixed interconnection networks because it provides the average distance between any two nodes of the network.
Dwindi Agryanti Johar   +2 more
doaj   +1 more source

On the Wiener index and the hyper-Wiener index of the Kragujevac trees

open access: yesProyecciones (Antofagasta), 2023
In this paper, the Wiener index and the hyper-Wiener index of the Kragujevac trees is computed in term of its vertex degrees. As application, we obtain an upper bond and a lower bound for the Wiener index and the hyper-Wiener index of these trees.
A. Heydari
semanticscholar   +1 more source

Wiener index and applications in the Neutrosophic graphs [PDF]

open access: yesNeutrosophic Sets and Systems, 2021
In this article, we have examined the Wiener index in neutrosophic graphs. Wiener index is one of the most important topological indices. This index is a distance-based index that is calculated based on the geodesic distance between two vertices.
Masoud Ghods, Zahra Rostami
doaj   +1 more source

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