Results 21 to 30 of about 148,252 (303)

M-Polynomials and Degree-Based Topological Indices of the Molecule Copper(I) Oxide

Journal of Chemistry, 2021
Topological indices are numerical parameters used to study the physical and chemical residences of compounds. Degree-based topological indices have been studied extensively and can be correlated with many properties of the understudy compounds.
Faryal Chaudhry, Iqra Shoukat, Deeba Afzal, Choonkil Park, Murat Cancan, Mohammad Reza Farahani   +5 more
doaj   +1 more source

QSPR Modeling of Fungicides Using Topological Descriptors

International Journal of Analytical Chemistry, 2023
A topological index is a real number that is obtained from a chemical graph’s structure. Determining the physiochemical and biological characteristics of a variety of medications is useful since it more accurately represents the theoretical ...
Saima Parveen, Fatima Saeed, Fozia Bashir Farooq, Nusrat Parveen, Nazeran Idrees, Sumiya Nasir, Rakotondrajao Fanja   +6 more
doaj   +1 more source

Application Of Some Topological Indices In Nover Topologized Graphs

Neutrosophic Sets and Systems, 2023
In this paper Nover top Z1 and Z2 index and Nover top H − index, Rd − index, GA − index, CON − index are investigated and some of the related theorems are discussed.These indices are also calculated for some specific types of Nover top graphs such as 2 − regular , K2 and K2,2 Nover Top ...
G. Muthumari, R. Narmada Devi
openaire   +2 more sources

Eccentricity-Based Topological Invariants of Dominating David-Derived Networks

Journal of Chemistry, 2021
A topological index is a numerical descriptor of the molecular structure based on certain topological features of the corresponding molecular graph. Topological indices are scientific contemplations of a graph that outline its subatomic topology and are ...
Muhammad Imran, Mian Muhammad Zobair, Hani Shaker   +2 more
doaj   +1 more source

GTI-space : the space of generalized topological indices [PDF]

, 2008
A new extension of the generalized topological indices (GTI) approach is carried out torepresent 'simple' and 'composite' topological indices (TIs) in an unified way.
A.R Matamala, A.R Matamala, A.T Balaban, Adelio R. Matamala, B Zhou, D. Plavšić, D.J Klein, D.J Klein, D.J Klein, E Estrada, E Estrada, E. Estrada, E. Estrada, E. Estrada, E. Estrada, E. Estrada, Ernesto Estrada, G.G Cash, H Wiener, H.P Schultz, H.P Schultz, I Gutman, I Gutman, I Gutman, I Gutman, J. Gálvez, J. Gálvez, J.R Votano, M. Randić, M. Randić, O Ivanciuc, R Todeschini, R.F Brown, W.R. Müller, Z. Mihalić   +34 more
core   +1 more source

Symmetry indicators of band topology [PDF]

Journal of Physics: Condensed Matter, 2020
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

Topological Chern Indices in Molecular Spectra [PDF]

Physical Review Letters, 2000
4 pages, 3 ...
Faure, Frederic, Zhilinskii, Boris
openaire   +3 more sources

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

Discovering new two-dimensional topological insulators from computational screening [PDF]

, 2019
We have performed a computational screening of topological two-dimensional (2D) materials from the Computational 2D Materials Database (C2DB) employing density functional theory.
Andersen, Erik, Deilmann, Thorsten, Okugawa, Takuya, Olsen, Thomas, Thygesen, Kristian S., Torelli, Daniele   +5 more
core   +2 more sources