Results 21 to 30 of about 14,490,419 (262)
On the general sum-connectivity index of trees with given number of pendent vertices
Discrete Applied Mathematics, 2017 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qing Cui, Lingping Zhong
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Two-Matchings with Respect to the General Sum-Connectivity Index of Trees
AxiomsA vertex-degree-based topological index φ associates a real number to a graph G which is invariant under graph isomorphism. It is defined in terms of the degrees of the vertices of G and plays an important role in chemical graph theory, especially in ...
Roberto Cruz, Mateo Lopez, Juan Rada
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MathematicsFor a∈R, the general sum-connectivity index of a graph G is defined as χa(G)=∑uv∈E(G)[dG(u)+dG(v)]a, where E(G) is the set of edges of G and dG(u) and dG(v) are the degrees of vertices u and v, respectively.
Elize Swartz, Tomáš Vetrík
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Degree-based Inverse Prodeg indices linking graph theory and cheminformatics with sharp results and QSPR modeling [PDF]
Scientific ReportsDegree-based topological indices are widely used in mathematical chemistry because they provide simple numerical descriptions of molecular graphs and can support structure–property analysis.
Mohammed Alsharafi, Yusuf Zeren
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M polynomial and degree based topological indices of six common synthetic polymers [PDF]
Scientific ReportsThe M-polynomial is a powerful algebraic tool that encodes structural information of molecular graphs and enables the derivation of numerous degree-based topological indices through algebraic operations.
Noel George +2 more
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AxiomsFor a graph G=(VG,EG), a degree-based graphical index GId takes the general form GId=∑xy∈EGϕ(dx,dy), where ϕ is a symmetric map and di is the degree of i∈VG. For α∈R, if ϕ=(dxdy)α (resp.
Sakander Hayat +4 more
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Frontiers in Chemistry, 2021 In this article, we provide new formulas to compute the reduced reciprocal randić index, Arithmetic geometric1 index, SK index, SK1 index, SK2 index, edge version of the first zagreb index, sum connectivity index, general sum connectivity index, and the ...
Dong Yun Shin +5 more
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On the general atom-bond sum-connectivity index
AIMS Mathematics, 2023 <abstract><p>This paper is concerned with a generalization of the atom-bond sum-connectivity (ABS) index, devised recently in [A. Ali, B. Furtula, I. Redžepović, I. Gutman, Atom-bond sum-connectivity index, <italic>J. Math. Chem.</italic>, <bold>60</bold> (2022), 2081-2093].
Abeer M. Albalahi, Zhibin Du, Akbar Ali
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Journal of Chemistry, 2021 In this research paper, we will compute the topological indices (degree based) such as the ordinary generalized geometric-arithmetic (OGA) index, first and second Gourava indices, first and second hyper-Gourava indices, general Randic´ index RγG,for γ=±1,
Muhammad Haroon Aftab +3 more
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On Certain Aspects of Topological Indices
Journal of Mathematics, 2021 A topological index, also known as connectivity index, is a molecular structure descriptor calculated from a molecular graph of a chemical compound which characterizes its topology.
Tanweer Ul Islam +4 more
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