Results 31 to 40 of about 25,433 (194)
Bounds of Zagreb indices and hyper Zagreb indices
, 2016 The hyper Zagreb index is a kind of extensions of Zagreb index, used for predicting physicochemical properties of organic compounds. Given a graph $G= (V(G), E(G))$, the first hyper-Zagreb index is the sum of the square of edge degree over edge set $E(G)$ and defined as $HM_1(G)=\sum_{e=uv\in E(G)}d(e)^2$, where $d(e)=d(u)+d(v)$ is the edge degree.
Wang, Shaohui +4 more
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Reformulated Zagreb indices of thorny graphs and algorithms
Mathematics in Applied Sciences and EngineeringMolecular descriptors (graph indices) numerically describe the topologies of the chemicals. Graph indices are used to estimate certain properties of molecules. In this paper, reformulated first/second Zagreb indices for the thorny graph of any graph are
Özge ÇOLAKOĞLU
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Leap Zagreb Connection Numbers for Some Networks Models
Indonesian Journal of Chemistry, 2020 The main object of this study is to determine the exact values of the topological indices which play a vital role in studying chemical information, structure properties like QSAR and QSPR. The first Zagreb index and second Zagreb index are among the most
Zahid Raza
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, 2011 In theoretical chemistry molecular structure descriptors are used for modeling physico-chemical, pharmacological, toxicologic, biological and other properties of chemical compounds.
Aleksandar Ilić +24 more
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Fuzzy Zagreb Indices and Some Bounds for Fuzzy Zagreb Energy
International Journal of Analysis and Applications, 2021 Topological indices M1/M2 known as first/second Zagreb indices are defined as the sum of the sum/product of degrees of pairs of adjacent vertices of a simple graph.
Mahesh Kale, S. Minirani
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Quasi-Tree Graphs With Extremal General Multiplicative Zagreb Indices
IEEE Access, 2020 Zagreb indices and their modified versions of a molecular graph are important molecular descriptors which can be applied in characterizing the structural properties of organic compounds from different aspects. In this article, by exploring the structures
Jianwei Du, Xiaoling Sun
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Zagreb-Type Indices of R-Vertex Join and R-Edge Join of Graphs
Journal of Chemistry, 2020 There are various methods available which are used to search large chemical databases and to predict the physicochemical properties of molecular structures. Using molecular descriptors for this purpose is the simplest of these methods. The Zagreb indices
Jianxin Wei +3 more
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Advanced Electronic Materials, EarlyView.A fully coupled FEM–HH model shows that ideally capacitive microelectrodes can achieve lower charge‐density thresholds than Faradaic contacts under current‐controlled stimulation. The advantage stems from the dynamics of surface current density on capacitive interfaces, which redirects current beneath adherent neurons.
Aleksandar Opančar +2 more
wiley +1 more source
Journal of Inequalities and Applications, 2017 Topological indices are the mathematical tools that correlate the chemical structure with various physical properties, chemical reactivity or biological activity numerically.
Muhammad Imran +3 more
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Introducing New Exponential Zagreb Indices for Graphs
Journal of Mathematics, 2021 New graph invariants, named exponential Zagreb indices, are introduced for more than one type of Zagreb index. After that, in terms of exponential Zagreb indices, lists on equality results over special graphs are presented as well as some new bounds on ...
Nihat Akgunes, Busra Aydin
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