Results 41 to 50 of about 82,097 (123)

Certain Topological Indices of Non-Commuting Graphs for Finite Non-Abelian Groups

open access: yesMolecules, 2022
A topological index is a number derived from a molecular structure (i.e., a graph) that represents the fundamental structural characteristics of a suggested molecule.
Fawad Ali   +5 more
doaj   +1 more source

Fourth ABC Index and Fifth GA Index of Certain Special Molecular Graphs [PDF]

open access: yes, 2015
Several chemical indices have been introduced in theoretical chemistry to measure the properties of molecular structures, such as atom bond connectivity index and geometric-arithmetic index.
Gao, W. (Wei)   +2 more
core  

Computing multiple ABC index and multiple GA index of some grid graphs

open access: yesOpen Physics, 2018
Topological indices are the atomic descriptors that portray the structures of chemical compounds and they help us to anticipate certain physico-compound properties like boiling point, enthalpy of vaporization and steadiness.
Gao Wei   +3 more
doaj   +1 more source

New Degree-Based Topological Indices of Toroidal Polyhex Graph by Means of M-Polynomial

open access: yesJournal of Mathematics, 2022
Graph theory is the principal field of mathematics. In this manuscript, we have discussed the toroidal polyhex graph. Some new indices such as reduced reciprocal randic, arithmetic geometric, SK, SK1, SK2 indices, First Zagrab, the general sum ...
Farkhanda Afzal   +5 more
doaj   +1 more source

Topological Attributes of Silicon Carbide SiC4-IIi,j Based on Ve-Degree and Ev-Degree

open access: yesJournal of Chemistry, 2022
The study of graphs containing edges and nodes is of great importance in science and in real life. Topological indices TIs are numerical parameters linked to chemical graphs used to estimate the biological, toxicological, and physical properties of ...
Abid Mahboob   +5 more
doaj   +1 more source

On Certain Aspects of Topological Indices

open access: yesJournal 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
doaj   +1 more source

Study of eccentricity based topological indices for benzenoid structure

open access: yesSouth African Journal of Chemical Engineering, 2023
Topological indices play paramount role in defining chemical and structural properties of different compounds. Chemical graph theory is useful for predicting the bioactivity and physicochemical properties through numerical invariants.
Kamel Jebreen   +5 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

Topological aspects of some dendrimer structures

open access: yesNanotechnology Reviews, 2018
A numerical number associated to the molecular graph G that describes its molecular topology is called topological index. In the study of QSAR and QSPR, topological indices such as atom-bond connectivity index, Randić connectivity index, geometric index,
Aslam Adnan   +3 more
doaj   +1 more source

Eccentricity-Based Topological Indices of a Cyclic Octahedron Structure

open access: yesMathematics, 2018
In this article, we study the chemical graph of a cyclic octahedron structure of dimension n and compute the eccentric connectivity polynomial, the eccentric connectivity index, the total eccentricity, the average eccentricity, the first Zagreb index ...
Manzoor Ahmed Zahid   +3 more
doaj   +1 more source

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