Results 11 to 20 of about 351,014 (282)

Existence result for a nonlinear elliptic problem by topological degree in Sobolev spaces with variable exponent

open access: yesMoroccan Journal of Pure and Applied Analysis, 2021
The aim of this paper is to establish the existence of solutions for a nonlinear elliptic problem of the ...
Ait Hammou Mustapha, Azroul Elhoussine
doaj   +1 more source

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

open access: yesJournal 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   +5 more
doaj   +1 more source

A refined estimate for the topological degree [PDF]

open access: yes, 2017
We sharpen an estimate of Bourgain, Brezis, and Nguyen for the topological degree of continuous maps from a sphere $\mathbb{S}^d$ into itself in the case $d \ge 2$. This provides the answer for $d \ge 2$ to a question raised by Brezis.
Nguyen, Hoai-Minh
core   +4 more sources

Topological fractal networks introduced by mixed degree distribution [PDF]

open access: yes, 2006
Several fundamental properties of real complex networks, such as the small-world effect, the scale-free degree distribution, and recently discovered topological fractal structure, have presented the possibility of a unique growth mechanism and allow for ...
Albert   +33 more
core   +2 more sources

Existence of solutions to second-order boundary value problems without growth restrictions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
This article investigates nonlinear, second-order ordinary differential equations subject to various two-point boundary conditions. A condition is introduced that ensures a priori bounds on the derivatives of solutions to the problem.
Christopher Tisdell
doaj   +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

Logarithmically-small Minors and Topological Minors [PDF]

open access: yes, 2014
Mader proved that for every integer $t$ there is a smallest real number $c(t)$ such that any graph with average degree at least $c(t)$ must contain a $K_t$-minor.
Montgomery, Richard
core   +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

On a sign-changing solution for some fractional differential equations

open access: yesBoundary Value Problems, 2017
In this paper, a kind of αth ( 3 < α ≤ 4 ...
Kemei Zhang
doaj   +1 more source

Helical Topological Edge States in a Quadrupole Phase [PDF]

open access: yes, 2018
Topological electric quadrupole is a recently proposed concept that extends the theory of electric polarization of crystals to higher orders. Such a quadrupole phase supports topological states localized on both edges and corners.
Deng, Hai-Yao   +2 more
core   +3 more sources

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