Results 31 to 40 of about 446,524 (307)

On Irregularity Measures of Some Dendrimers Structures

open access: yesMathematics, 2019
A graph is said to be a regular graph if all its vertices have the same degree, otherwise, it is irregular. Irregularity indices are usually used for quantitative characterization of the topological structure of non-regular graphs.
Wei Gao   +4 more
doaj   +1 more source

Eccentricity Based Topological Indices of an Oxide Network

open access: yesMathematics, 2018
Graph theory has much great advances in the field of mathematical chemistry. Chemical graph theory has become very popular among researchers because of its wide applications in mathematical chemistry.
Muhammad Imran   +5 more
doaj   +1 more source

Computing Edge Metric Dimension of One-Pentagonal Carbon Nanocone

open access: yesFrontiers in Physics, 2021
Minimum resolving sets (edge or vertex) have become an integral part of molecular topology and combinatorial chemistry. Resolving sets for a specific network provide crucial information required for the identification of each item contained in the ...
Sunny Kumar Sharma   +2 more
doaj   +1 more source

Comparing energy and Randic energy

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2013
The recently conceived Randić energy (RE) is examined, and its relation to the (earlier much studied) total π-electron energy (E) is investigated. Within classes of molecular graphs, there exists a relatively good (increasing) linear correlation between ...
Boris Furtula, Ivan Gutman
doaj   +1 more source

Computing entire Zagreb indices of some dendrimer structures

open access: yesMain Group Metal Chemistry, 2020
Topological indices are numerical numbers associated to molecular graphs and are invariant of a graph. In QSAR/QSPR study, Zagreb indices are used to explain the different properties of chemical compounds at the molecular level mathematically.
Gao Wei   +5 more
doaj   +1 more source

On Computation of Edge Degree-Based Banhatti Indices of a Certain Molecular Network

open access: yesJournal of Mathematics, 2021
Chemical graph theory deals with the basic properties of a molecular graph. In graph theory, we correlate molecular descriptors to the properties of molecular structures.
Jiang-Hua Tang   +6 more
doaj   +1 more source

Computing the Ediz eccentric connectivity index of discrete dynamic structures

open access: yesOpen Physics, 2017
From the earlier studies in physical and chemical sciences, it is found that the physico-chemical characteristics of chemical compounds are internally connected with their molecular structures. As a theoretical basis, it provides a new way of thinking by
Wu Hualong   +4 more
doaj   +1 more source

The measure of irregularities of nanosheets

open access: yesOpen Physics, 2020
Nanosheets are two-dimensional polymeric materials, which are among the most active areas of investigation of chemistry and physics. Many diverse physicochemical properties of compounds are closely related to their underlying molecular topological ...
Iqbal Zahid   +4 more
doaj   +1 more source

Multicenter Wiener indices and their applications [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
The Wiener index W can be viewed as a molecular structure descriptor composed of increments representing interactions between pairs of atoms. A generalization of the W are the Steiner-Wiener indices kW, k=3,4,....
Gutman Ivan, Furtula Boris, Li Xueliang
doaj   +1 more source

Molecular graph contrastive learning with line graph

open access: yesPattern Recognition
Trapped by the label scarcity in molecular property prediction and drug design, graph contrastive learning (GCL) came forward. Leading contrastive learning works show two kinds of view generators, that is, random or learnable data corruption and domain knowledge incorporation.
Xueyuan Chen   +6 more
openaire   +2 more sources

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