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On the Trees With Maximal Augmented Zagreb Index

open access: yesIEEE Access, 2018
The augmented Zagreb index (AZI), a variant of the well-known atom-bond connectivity (ABC) index, was shown to have the best predicting ability for a variety of physicochemical properties among several tested vertex-degree-based topological indices ...
Wenshui Lin   +4 more
doaj   +4 more sources

Maximal Augmented Zagreb Index of Trees With at Most Three Branching Vertices

open access: yesIEEE Access, 2019
The Augmented Zagreb index of a graph $G$ is defined to be $\mathcal {AZI}\left ({G}\right) =\sum _{uv\in E\left ({G}\right) } \left ({\frac { d\left ({u}\right) d\left ({v}\right) }{d\left ({u}\right) +d\left ({v}\right) -2} }\right) ^{3}$ , where ...
Roberto Cruz   +2 more
doaj   +4 more sources

On chemical trees with minimum augmented Zagreb index [PDF]

open access: yesContributions to Mathematics, 2023
Summary: Let \(G\) be a simple connected graph with order at least 3, vertex set \(V(G)\), and edge set \(E(G)\). For a vertex \(v\in V(G)\), denote by \(d_G(v)\) the degree of \(v\). The augmented Zagreb index of the graph \(G\) is denoted by \(\mathcal{AZ}(G)\) and is defined as \(\mathcal{AZ}(G)=\sum_{uv\in E(G)}(d_G(u)d_G(v)/(d_G(u)+d_G(v)-2))^3\).
Wei Gao
doaj   +3 more sources

Bounds for the augmented Zagreb index

open access: yesTheory and Applications of Graphs, 2023
The augmented Zagreb index (\rm{AZI} for short) of a graph $G$, introduced by Furtula et al. in 2010, is defined as ${\rm AZI}(G)=\sum\limits_{v_iv_j\in E(G)}{\left(\frac{d(v_i)d(v_j)}{d(v_i)+d(v_j)-2}\right)}^3$, where $E(G)$ is the edge set of $G$, and
Ren qingcuo   +3 more
doaj   +4 more sources

Unicyclic and bicyclic graphs with minimal augmented Zagreb index [PDF]

open access: yesJournal of Inequalities and Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhan, Fuqin, Qiao, Youfu, Cai, Junliang
core   +3 more sources

Data-driven analysis of chemical graph of carbazole and diketopyrrolopyrrole [PDF]

open access: yesScientific Reports
Topological indices play a key role in molecular graph theory, consisting of mathematical tools that allocate numerical values to molecular structures.
Zeeshan Saleem Mufti   +5 more
doaj   +2 more sources

Some Bounds of Weighted Entropies with Augmented Zagreb Index Edge Weights

open access: yesDiscrete Dynamics in Nature and Society, 2020
The graph entropy was proposed by Körner in the year 1973 when he was studying the problem of coding in information theory. The foundation of graph entropy is in information theory, but it was demonstrated to be firmly identified with some established ...
Yujie Huang   +4 more
doaj   +3 more sources

树状六角系统的增强型萨格勒布指数(The augmented Zagreb index of the catacondensed hexagonal systems)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2016
The augmented Zagreb index (AZI) of a graph G= (V,E) was recently introduced by FURTULA et al, which is defined as ,where du denotes the degree of a vertex u in G.
LIUJianping(刘剑萍)   +2 more
doaj   +2 more sources

A note on the augmented Zagreb index of cacti with fixed number of vertices and cycles

open access: yesKuwait Journal of Science, 2016
Recent studies show that augmented Zagreb index (AZI) possess the best correlating ability among the various well known topological indices for predicting the certain physicochemical properties ofparticular types of molecules.
Akbar Ali, Akhlaq A. Bhatti
doaj   +4 more sources

Exploring topological indices and entropy measure via rational curve fitting models for calcium hydroxide network [PDF]

open access: yesScientific Reports
This work uses rational curve fitting models to investigate the complex link between topological indices and entropy metrics in calcium hydroxide $$(Ca(OH)_{2})$$ ( C a ( O H ) 2 ) networks.
Rongbing Huang   +5 more
doaj   +2 more sources

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