Results 11 to 20 of about 916 (106)

Bicyclic graphs with maximal edge revised Szeged index

open access: yesDiscrete Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lily Chen
exaly   +3 more sources

Proofs of three conjectures on the quotients of the (revised) Szeged index and the Wiener index and beyond

open access: yesDiscrete Mathematics, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shuchao Li
exaly   +3 more sources

Revised Szeged Index and Revised Edge Szeged Index of Certain Special Molecular Graphs [PDF]

open access: yesInternational Journal of Applied Physics and Mathematics, 2014
In theoretical chemistry, the revised Szeged index and revised Szeged edge index were introduced to measure the stability of alkanes and the strain energy of cycloalkanes. In this paper, by virtue of mathematical derivation, we determine the revised Szeged index and revised edge Szeged index of fan molecular graph, wheel molecular graph, gear fan ...
Yun Gao, Wei Gao, Li Liang
openaire   +1 more source

The (revised) Szeged index and the Wiener index of a nonbipartite graph

open access: yesEuropean Journal of Combinatorics, 2014
Hansen et. al. used the computer programm AutoGraphiX to study the differences between the Szeged index $Sz(G)$ and the Wiener index $W(G)$, and between the revised Szeged index $Sz^*(G)$ and the Wiener index for a connected graph $G$. They conjectured that for a connected nonbipartite graph $G$ with $n \geq 5$ vertices and girth $g \geq 5,$ $ Sz(G)-W ...
Lily Chen   +2 more
openaire   +2 more sources

Topological edge properties of C60+12n fullerenes

open access: yesBeilstein Journal of Nanotechnology, 2013
A molecular graph M is a simple graph in which atoms and chemical bonds are the vertices and edges of M, respectively. The molecular graph M is called a fullerene graph, if M is the molecular graph of a fullerene molecule.
A. Mottaghi, Ali R. Ashrafi
doaj   +1 more source

The extremal unicyclic graphs with given diameter and minimum edge revised Szeged index

open access: yesAIMS Mathematics, 2023
<abstract><p>Let $ H $ be a connected graph. The edge revised Szeged index of $ H $ is defined as $ Sz^{\ast}_{e}(H) = \sum\limits_{e = uv\in E_H}(m_{u}(e|H)+\frac{m_{0}(e|H)}{2})(m_{v}(e|H)+\frac{m_{0}(e|H)}{2}) $, where $ m_{u}(e|H) $ (resp., $ m_{v}(e|H) $) is the number of edges whose distance to vertex $ u $ (resp., $ v $) is smaller ...
Shengjie He, Qiaozhi Geng, Rong-Xia Hao
openaire   +2 more sources

Studying the corona product of graphs under some graph invariants [PDF]

open access: yesTransactions on Combinatorics, 2014
The corona product $Gcirc H$ of two graphs $G$ and $H$ is obtained by taking one copy of $G$ and $|V(G)|$ copies of $H$; and by joining each vertex of the $i$-th copy of $H$ to the $i$-th vertex of $G$, where $1 leq i leq |V(G)|$.
M. Tavakoli   +2 more
doaj  

The extremal unicyclic graphs of the revised edge Szeged index with given diameter

open access: yes, 2023
Let $G$ be a connected graph. The revised edge Szeged index of $G$ is defined as $Sz^{\ast}_{e}(G)=\sum\limits_{e=uv\in E(G)}(m_{u}(e|G)+\frac{m_{0}(e|G)}{2})(m_{v}(e|G)+\frac{m_{0}(e|G)}{2})$, where $m_{u}(e|G)$ (resp., $m_{v}(e|G)$) is the number of edges whose distance to vertex $u$ (resp., $v$) is smaller than the distance to vertex $v$ (resp., $u$)
He, Shengjie   +2 more
openaire   +2 more sources

Predicting peri‐implantitis incidence and implant failure via risk‐assessment and prognostication tools: A validation study

open access: yesJournal of Periodontology, EarlyView.
Abstract Background Identifying individuals at high risk for developing peri‐implantitis (PI) and then determining the prognosis for implants with PI is crucial for treatment planning. Methods This study longitudinally followed implants from implant placement retrospectively.
Muhammad H. A. Saleh   +9 more
wiley   +1 more source

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