Results 21 to 30 of about 18,532 (261)

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, Habib Mustafa, Younas Muhammad, Yousaf Muhammad, Nazeer Waqas   +4 more
doaj   +1 more source

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, Chunxiang Wang, Sarra Abdalrhman Mohammed   +2 more
doaj   +1 more source

On Computation of Recently Defined Degree-Based Topological Indices of Some Families of Convex Polytopes via M-Polynomial

Complexity, 2021
Topological indices are of incredible significance in the field of graph theory. Convex polytopes play a significant role both in various branches of mathematics and also in applied areas, most notably in linear programming.
Deeba Afzal, Farkhanda Afzal, Mohammad Reza Farahani, Samia Ali   +3 more
doaj   +1 more source

A paradigmatic approach to the molecular descriptor computation for some antiviral drugs

Heliyon, 2023
In theoretical chemistry, topological indices are commonly employed to model the physico-chemical properties of chemical compounds. Mathematicians frequently use Zagreb indices to calculate a chemical compound's strain energy, melting point, boiling ...
Muhammad Usman Ghani, Muhammad Imran, S. Sampathkumar, Fairouz Tchier, K. Pattabiraman, Ahmad Zubair Jan   +5 more
doaj   +1 more source

Topological indices for the antiregular graphs

Le Matematiche, 2021
Summary: We determine some classical distance-based and degree-based topological indices of the connected antiregular graphs (maximally irregular graphs). More precisely, we obtain explicitly the \(k\)-Wiener index, the hyper-Wiener index, the degree distance, the Gutman index, the first, second and third Zagreb index, the reduced first and second ...
openaire   +2 more sources

Symmetry indicators of band topology [PDF]

Journal of Physics: Condensed Matter, 2020
Abstract Topological materials are quantum materials with nontrivial ground-state entanglement that are irremovable so long as certain rules, like invariance under symmetries and the existence of an energy gap, are respected. They showcase unconventional properties like robust anomalous surface states and quantized physical responses.
openaire   +4 more sources

Degree and Neighborhood Degree Sum-based Topological Characteristics of Zosurabalpin: a Novel Drug for Managing Antibiotic-resistant Infection

Scientific Annals of Computer Science
This article is concerned with the topological characterization of the antibiotic Zosurabalpin through the computation of degree and associated neighborhood degree sum-based topological indices.
Shibsankar Das, Virendra Kumar, Jayjit Barman, Modhuleena Mandal, Arti Kumari   +4 more
doaj   +1 more source

Study of Neighborhood Degree-Based Topological Indices via Direct and NM-Polynomial of Starphene Graph

Journal of Function Spaces, 2022
Our objective is to compute the neighborhood degree-based topological indices via NM-polynomial for starphene. In the neighborhood degree-based topological indices, we compute the third version of the Zagreb index; neighborhood second Zagreb index ...
Deeba Afzal, Saira Hameed, Usman Ashraf, Arif Mehmood, Faryal Chaudhry, Dhan Kumari Thapa   +5 more
doaj   +1 more source

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, Anwar Saleh, Wafa Al-Shammakh   +2 more
doaj  

On Topological Indices of mth Chain Hex-Derived Network of Third Type

Frontiers in Physics, 2020
In theoretical chemistry, the numerical parameters that are used to characterize the molecular topology of graphs are called topological indices. Several physical and chemical properties like boiling point, entropy, heat formation, and vaporization ...
Yuhong Huo, Haidar Ali, Muhammad Ahsan Binyamin, Syed Sheraz Asghar, Usman Babar, Jia-Bao Liu   +5 more
doaj   +1 more source