Results 1 to 10 of about 1,209 (153)

Enumeration of the Hosoya index of pericondensed benzenoid system [PDF]

open access: yesHeliyon
In chemical graph theory, topological indices play an important role and have various uses in quantitative structure-property relationships (QSPR) as well as quantitative structure-activity relationships (QSARs).
Muhammad Talha Farooq   +2 more
doaj   +6 more sources

Linear Algorithms for the Hosoya Index and Hosoya Matrix of a Tree [PDF]

open access: yesMathematics, 2021
The Hosoya index of a graph is defined as the total number of its independent edge sets. This index is an important example of topological indices, a molecular-graph based structure descriptor that is of significant interest in combinatorial chemistry ...
Aleksander Vesel
doaj   +4 more sources

Hosoya index of tree structures [PDF]

open access: yesTransactions on Combinatorics, 2020
‎‎‎The Hosoya index‎, ‎also known as the $Z$ index‎, ‎of a graph is the‎ ‎total number of matchings in it‎. ‎In this paper‎, ‎we study the Hosoya index of the tree structures‎.
Ramin Kazemi, Ali Behtoei
doaj   +3 more sources

On the Hosoya Index of Some Families of Graph [PDF]

open access: yesMathematics Interdisciplinary Research, 2021
‎We obtain the exact relations of the Hosoya index that is defined as the sum of the number of all the matching sets‎, ‎on some classes of cycle-related graphs‎.
Fateme Movahedi   +2 more
doaj   +2 more sources

Graphs with maximal Hosoya index and minimal Merrifield–Simmons index

open access: yesDiscrete Mathematics, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Stephan Wagner, Zhongxun Zhu, Cao Yuan
exaly   +2 more sources

The Hosoya index and the Merrifield-Simmons index of some graphs [PDF]

open access: yesTransactions on Combinatorics, 2012
The Hosoya index and the Merrifield-Simmons index are two types of graph invariants used in mathematical chemistry. In this paper, we give some formulas for computed these indices for some classes of corona product and link of two graphs. Furthermore, we
Samaneh Hossein-Zadeh   +3 more
doaj   +3 more sources

On the Hosoya index and the Merrifield–Simmons index of graphs with a given clique number

open access: yesApplied Mathematics Letters, 2010
Let \(C(n,k)\) be the class of all graphs of order \(n\) and the clique number \(k\). The author shows that in \(C(n,k)\) the Turan graph has the maximum number of matchings and the minimum number of independent sets. On other hand it is shown that the graph obtained from the complete graph \(G\) by adding new edges incident with a vertex of \(G\) has ...
Kexiang Xu
exaly   +2 more sources

Relationship between the Hosoya polynomial and the hyper-Wiener index

open access: yesApplied Mathematics Letters, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

The Hosoya index and the Merrifield–Simmons index [PDF]

open access: yesJournal of Mathematical Chemistry, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huang, Yufeng   +2 more
  +9 more sources

Asymmetric circular graph with Hosoya index and negative continued fractions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
It has been known that the Hosoya index of caterpillar graph can be calculated as the numerator of the simple continued fraction. Recently in [MATCH Commun. Math. Comput. Chem.
T. Komatsu
doaj   +1 more source

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