Results 11 to 20 of about 90,458 (256)
Analysis of the properties of the topological Index using (analysis tools)
Al-Kitab Journal for Pure Sciences, 2023 Graph G has two sets of information: the vertices, V(G), and the edges, E(G). The definitions for the Connectivity, Geometric Arithmetic, Atomic Bond, and Sum Connectivity Indices of G: were deg(u), deg(v) are a degree of vertices. Dendrimers are
Batool Hatawi, Nabil Aref
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Topological Descriptors of M-Carbon Mr,s,t
Journal of Chemistry, 2021 We have studied topological indices of the one the hardest crystal structures in a given chemical system, namely, M-carbon. These structures are based and obtained by the famous algorithm USPEX. The computations and applications of topological indices in
Hong Yang, Muhammad Naeem
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On the spread of the geometric-arithmetic matrix of graphs
AKCE International Journal of Graphs and Combinatorics, 2022 In a graph G, if di is the degree of a vertex vi, the geometric-arithmetic matrix GA(G) is a square matrix whose [Formula: see text]-th entry is [Formula: see text] whenever vertices i and j are adjacent and 0 otherwise.
Bilal A. Rather +2 more
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Remark on the upper bounds for arithmetic-geometric topological index of graphs
Scientific Publications of the State University of Novi Pazar Series A: Applied Mathematics, Informatics and mechanics, 2021 In this paper two new inequalities involving upper bounds for arithmetic-geometric topological index are obtained.
S.D. Stankov +3 more
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Vertex-Based Topological Indices of Double and Strong Double Graph of Dutch Windmill Graph
Journal of Chemistry, 2021 A measurement of the molecular topology of graphs is known as a topological index, and several physical and chemical properties such as heat formation, boiling point, vaporization, enthalpy, and entropy are used to characterize them.
Muhammad Asad Ali +3 more
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Upper bounds for arithmetic-geometric index of graphs [PDF]
Scientific Publications of the State University of Novi Pazar Series A: Applied Mathematics, Informatics and mechanics, 2018 Let G = (V,E), V = {1,2 … n}, be a simple connected graph with n vertices and m edges and let d1 ≥ d2 … ≥ dn > 0, be the sequence of vertex degrees. With i ~ j we denote the adjacency of the vertices i and j in graph G. With AG = Σi~j di+dj 2 p didj we denote arithmetic-geometric topological index.
I.Ž. Milovanović +2 more
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ON ARITHMETIC-GEOMETRIC INDEX (GA) AND EDGE GA INDEX
TWMS Journal of Applied and Engineering Mathematics, 2018 Let G(V (G), E(G)) be a simple connected graph and dG(u) be the degree of the vertex u. Topological indices are numerical parameters of a graph which are invariant under graph isomorphisms. Recently, people are studying various topological measures such as the arithmetic-geometric index and the edge version of arithmeticgeometric index of a graph G ...
V.AYTAÇ, -, T.TURACI, -
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More on Comparison Between First Geometric-Arithmetic Index and Atom-Bond Connectivity Index [PDF]
, 2015 The first geometric-arithmetic (GA) index and atom-bond connectivity (ABC) index are molecular structure descriptors which play a significant role in quantitative structure-property relationship (QSPR) and quantitative structure-activity relationship ...
Akbar Ali +3 more
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Selection indices to identify drought-tolerant grain sorghum cultivars. [PDF]
, 2017 Twenty-five cultivars of grain sorghum [Sorghum bicolor (L.) Moench] were examined under both drought stress and normal conditions in 4 experiments. In each condition, genotypes were evaluated in a factorial experiment using a randomized complete block ...
BASTOS, E. A. +8 more
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Some Topological Invariants of Graphs Associated with the Group of Symmetries
Journal of Chemistry, 2020 A topological index is a quantity that is somehow calculated from a graph (molecular structure), which reflects relevant structural features of the underlying molecule.
Chang-Cheng Wei +6 more
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