Results 31 to 40 of about 5,113,672 (306)

Eccentric topological properties of a graph associated to a finite dimensional vector space

open access: yesMain Group Metal Chemistry, 2020
A topological index is actually designed by transforming a chemical structure into a number. Topological index is a graph invariant which characterizes the topology of the graph and remains invariant under graph automorphism.
Liu Jia-Bao   +5 more
doaj   +1 more source

On the topology and index of minimal surfaces II

open access: yesJournal of Differential Geometry, 2023
For an immersed minimal surface in $\mathbb{R}^3$, we show that there exists a lower bound on its Morse index that depends on the genus and number of ends, counting multiplicity. This improves, in several ways, an estimate we previously obtained bounding the genus and number of ends by the index. Our new estimate resolves several conjectures made by J.
Chodosh, Otis, Maximo, Davi
openaire   +3 more sources

Computation of Several Banhatti and Reven Invariants of Silicon Carbides

open access: yesمجلة بغداد للعلوم, 2023
Expressions for the molecular topological features of silicon carbide compounds are essential for quantitative structure-property and structure-activity interactions.
Abid Mahboob   +3 more
doaj   +1 more source

Mostar Index of Cycle-Related Structures

open access: yesJournal of Chemistry, 2022
A topological index is a numerical quantity associated with the molecular structure of a chemical compound. This number remains fixed with respect to the symmetry of a molecular graph.
Fatima Asif   +3 more
doaj   +1 more source

Aspects of Topological String Theory [PDF]

open access: yes, 2008
Two aspects of the topological string and its applications are considered in this thesis. Firstly, non-perturbative contributions to the OSV conjecture relating four-dimensional extremal black holes and the closed topological string partition function ...
Cook, Paul Langabi Hogan
core   +1 more source

Hosoya, Schultz, and Gutman Polynomials of Generalized Petersen Graphs Pn,1 and Pn,2

open access: yesJournal of Mathematics, 2023
The graph theory has wide important applications in various other types of sciences. In chemical graph theory, we have many topological polynomials for a graph G through which we can compute many topological indices.
Ramy Shaheen   +2 more
doaj   +1 more source

Identification of a class of index models: A topological approach [PDF]

open access: yesThe Econometrics Journal, 2020
Summary We establish nonparametric identification in a class of so-called index models by using a novel approach that relies on general topological results. Our proof strategy requires substantially weaker conditions on the functions and distributions characterising the model than those required by existing strategies; in particular, it ...
Mogens Fosgerau, Dennis Kristensen
openaire   +5 more sources

Self-stabilizing temperature driven crossover between topological and non-topological ordered phases in one-dimensional conductors [PDF]

open access: yes, 2015
We present a self-consistent analysis of the topological superconductivity arising from the interaction between self-ordered localized magnetic moments and electrons in one-dimensional conductors in contact with a superconductor.
Simon, Pascal   +2 more
core   +1 more source

Topological Indices of H-Naphtalenic Nanosheet

open access: yesOpen Chemistry, 2018
In chemical graph theory, a single numeric number related to a chemical structure is called a topological descriptor or topological index of a graph.
Idrees Nazeran   +4 more
doaj   +1 more source

Computing SS Index of Certain Dendrimers

open access: yesJournal of Mathematics, 2021
The numerical descriptor gathers the data from the molecular graphs and helps to know the characteristics of the chemical structure known as topological index.
Weidong Zhao   +4 more
doaj   +1 more source

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