Results 31 to 40 of about 3,892,377 (304)

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

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

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

Correlations and screening of topological charges in Gaussian random fields [PDF]

open access: yes, 2003
Two-point topological charge correlation functions of several types of geometric singularity in Gaussian random fields are calculated explicitly, using a general scheme: zeros of n-dimensional random vectors, signed by the sign of their Jacobian ...
Dennis, MR   +2 more
core   +1 more source

Degree-Based Topological Indices of Boron B12

open access: yesJournal of Chemistry, 2021
Topological index sometimes called molecular descriptor is a numerical value which associates a chemical composition for correlating chemical structure with numerous physical properties, chemical reactivity, or biological activity.
Nouman Saeed   +4 more
doaj   +1 more source

Topological States of Matter [PDF]

open access: yes, 2012
My research program is focused on the study of elastic deformation and topological defects in two materials: graphene and topological insulators. In both systems at low energies the electrons have a nearly linear spectrum, i.e.
Parente, Vincenzo
core   +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, Braunecker, Bernd
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

Topological Quantum Field Theory and the Geometric Langlands Correspondence [PDF]

open access: yes, 2013
In the pioneering work of A. Kapustin and E. Witten, the geometric Langlands program of number theory was shown to be intimately related to duality of GL-twisted N=4 super Yang-Mills theory compactified on a Riemann surface. In this thesis, we generalize
Setter, Kevin Luke
core   +1 more source

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