Results 21 to 30 of about 150,131 (321)

QSPR Modeling of Fungicides Using Topological Descriptors

open access: yesInternational 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   +6 more
doaj   +1 more source

Eccentricity-Based Topological Invariants of Dominating David-Derived Networks

open access: yesJournal 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   +2 more
doaj   +1 more source

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

open access: yes, 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   +34 more
core   +1 more source

Application Of Some Topological Indices In Nover Topologized Graphs

open access: yesNeutrosophic 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

An index theorem in differential K-theory [PDF]

open access: yes, 2010
Let X --> B be a proper submersion with a Riemannian structure. Given a differential K-theory class on X, we define its analytic and topological indices as differential K-theory classes on B.
Freed, Daniel S., Lott, John
core   +1 more source

Symmetry indicators of band topology [PDF]

open access: yesJournal 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]

open access: yesPhysical Review Letters, 2000
4 pages, 3 ...
Faure, Frederic, Zhilinskii, Boris
openaire   +3 more sources

Multiplicative topological indices of honeycomb derived networks

open access: yesOpen 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
doaj   +1 more source

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

open access: yesHeliyon, 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   +5 more
doaj   +1 more source

Computation of Topological Indices of Some Special Graphs

open access: yesMathematics, 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
doaj   +1 more source

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