Results 11 to 20 of about 23,816 (337)
On the topological matrix and topological indices [PDF]
AKCE International Journal of Graphs and Combinatorics, 2020 The topological matrix of a graph are indexed by . If then the of is 1 and the of is 0 for otherwise. In this paper, an upper bound for this topological matrix is found and the weighted topological matrix is defined.
Gülistan Kaya Gök
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Multiplicative topological indices of honeycomb derived networks
Open Physics, 2019 Topological indices are the numerical values associated with chemical structures that correlate physico-chemical properties with structural properties.
Tang Jiang-Hua +4 more
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Topological Indices of Proteins [PDF]
Scientific Reports, 2019 AbstractProtein molecules can be approximated by discrete polygonal chains of amino acids. Standard topological tools can be applied to the smoothening of the polygons to introduce a topological classification of folded states of proteins, for example, using the self-linking number of the corresponding framed curves.
Melnikov, Dmitry +2 more
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Computation of Revan Topological Indices for Phenol-Formaldehyde Resin
Journal of Mathematics, 2022 Phenol-formaldehyde resin has a wide range of moldings. The phenolic resin retains properties at the freezing point; hence, it is difficult to determine its age.
Muhammad Kamran +5 more
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Computation of Topological Indices of Some Special Graphs
Mathematics, 2018 There are several chemical indices that have been introduced in theoretical chemistry to measure the properties of molecular topology, such as distance-based topological indices, degree-based topological indices and counting-related topological indices ...
Mohammed Salaheldeen Abdelgader +2 more
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Downhill Zagreb Topological Indices of Graphs
International Journal of Analysis and Applications, 2021 Topological indices are graph invariants determined by the distance or degree of vertices of the molecular graph. Topological indices have been used effectively in chemical graph theory in explaining the structures and predicting certain physicochemical ...
Bashair Al-Ahmadi +2 more
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Topological indices for nanoclusters [PDF]
Computational Materials Science, 2015 Abstract Nanoclusters create the possibility of designing novel properties and devices based on finite structures, with small dimensions. Clusters are of interest for catalytic, optical, biochemical, and structural characteristics. We examine clusters of icosahedral, cuboctahedral, and decahedral symmetry.
Kaatz, Forrest, Bultheel, Adhemar
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M-Polynomials and Topological Indices of Dominating David Derived Networks
Open Chemistry, 2018 There is a strong relationship between the chemical characteristics of chemical compounds and their molecular structures. Topological indices are numerical values associated with the chemical molecular graphs that help to understand the physical features,
Kang Shin Min +4 more
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Degree-Based Topological Indices
Croatica Chemica Acta, 2013 The degree of a vertex of a molecular graph is the number of first neighbors of this vertex. A large number of molecular-graph-based structure descriptors (topological indices) have been conceived, depending on vertex degrees. We summarize their main properties, and provide a critical comparative study thereof. (doi: 10.5562/cca2294)
Gutman, Ivan, Ivan Gutman
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Topological Study of Zeolite Socony Mobil-5 via Degree-Based Topological Indices
Journal of Chemistry, 2021 Graph theory is a subdivision of discrete mathematics. In graph theory, a graph is made up of vertices connected through edges. Topological indices are numerical parameters or descriptors of graph.
Nouman Saeed +4 more
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