Results 21 to 30 of about 3,144 (190)
M-Polynomials and Degree-Based Topological Indices of the Molecule Copper(I) Oxide
Journal of Chemistry, 2021 Topological indices are numerical parameters used to study the physical and chemical residences of compounds. Degree-based topological indices have been studied extensively and can be correlated with many properties of the understudy compounds.
Faryal Chaudhry +5 more
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On Zagreb Indices as Complexity Indices
Croatica chemica acta, 2000 Two original Zagreb indices, denoted M1 and M2, and introduced in 1972, were symmetry-modified by summing up only degrees (SMM1) or edge-weights (SMM2) of symmetry nonequivalent vertices or edges of graphs. Their dependence on the structural features and symmetry of molecular graphs is studied. They were also compared to eight other complexity indices (
Baučić, Ivo +3 more
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Some Reverse Degree-Based Topological Indices and Polynomials of Dendrimers
Mathematics, 2018 Topological indices collect information from the graph of molecule and help to predict properties of the underlying molecule. Zagreb indices are among the most studied topological indices due to their applications in chemistry.
Wei Gao +4 more
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Topological Properties of Degree-Based Invariants via M-Polynomial Approach
Journal of Mathematics, 2022 Chemical graph theory provides a link between molecular properties and a molecular graph. The M-polynomial is emerging as an efficient tool to recover the degree-based topological indices in chemical graph theory.
Samirah Alsulami +4 more
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On the Zagreb indices equality
Discrete Applied Mathematics, 2012 11 pages, 1 ...
Abdo, Hosam +2 more
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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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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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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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