Results 1 to 10 of about 17,958 (193)

General Atom-Bond Sum-Connectivity Index of Graphs

open access: yesMathematics, 2023
This paper is concerned with the general atom-bond sum-connectivity index ABSγ, which is a generalization of the recently proposed atom-bond sum-connectivity index, where γ is any real number.
Abeer M. Albalahi   +2 more
doaj   +2 more sources

On the general atom-bond sum-connectivity index

open access: yesAIMS 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
openaire   +2 more sources

On the Computation of Some Topological Descriptors to Find Closed Formulas for Certain Chemical Graphs

open access: yesJournal 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
doaj   +1 more source

Topological Descriptors of M-Carbon Mr,s,t

open access: yesJournal 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
doaj   +1 more source

Vertex-Based Topological Indices of Double and Strong Double Graph of Dutch Windmill Graph

open access: yesJournal 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
doaj   +1 more source

On Topological Indices for New Classes of Benes Network

open access: yesJournal of Mathematics, 2021
Topological indices (TIs) transform a molecular graph into a number. The TIs are a vital tool for quantitative structure activity relationship (QSAR) and quantity structure property relationship (QSPR).
Aftab Hussain   +5 more
doaj   +1 more source

Comparative Study of Certain Synthetic Polymers via Bond-Additive Invariants

open access: yesIEEE Access, 2021
Polymers, like vulcanized rubber, bakelite, and poly-methyl methacrylate (PMMA), are widely utilized as denture based materials, and their prominence has been nothing short of excellent. Recently, Ahmad et al.
Maqsood Ahmad   +2 more
doaj   +1 more source

Degree-Based Topological Indices of Boron B12

open access: yesJournal of Chemistry, 2021
Topological index sometimes called molecular descriptor is a numerical value which associates a chemical composition for correlating chemical structure with numerous physical properties, chemical reactivity, or biological activity.
Nouman Saeed   +4 more
doaj   +1 more source

Entropy measures of the metal–organic network via topological descriptors

open access: yesMain Group Metal Chemistry, 2023
A family of chemical compounds known as metal–organic networks (MONs) is composed mainly of clusters of metal ions with organic ligands. It can increase volatility or make substances soluble in organic solvents.
Zhang Xiujun   +4 more
doaj   +1 more source

Topological Indices of Certain Transformed Chemical Structures

open access: yesJournal of Chemistry, 2020
Topological indices like generalized Randić index, augmented Zagreb index, geometric arithmetic index, harmonic index, product connectivity index, general sum-connectivity index, and atom-bond connectivity index are employed to calculate the bioactivity ...
Xuewu Zuo   +4 more
doaj   +1 more source

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