Results 11 to 20 of about 350 (69)

On isolated singularities of Kirchhoff equations

open access: yesAdvances in Nonlinear Analysis, 2020
In this note, we study isolated singular positive solutions of Kirchhoff ...
Chen Huyuan   +2 more
doaj   +1 more source

Positive solution for a nonlocal problem with strong singular nonlinearity

open access: yesOpen Mathematics, 2023
In this article, we consider a nonlocal problem with a strong singular term and a general weight function. By using Ekeland’s variational principle, we prove a necessary and sufficient condition for the existence of a positive solution.
Wang Yue   +3 more
doaj   +1 more source

Positive solutions for a class of singular (p, q)-equations

open access: yesAdvances in Nonlinear Analysis, 2023
We consider a nonlinear singular Dirichlet problem driven by the (p,q)\left(p,q)-Laplacian and a reaction where the singular term u−η{u}^{-\eta } is multiplied by a strictly positive Carathéodory function f(z,u)f\left(z,u).
Leonardi Salvatore   +1 more
doaj   +1 more source

Asymptotic behavior and uniqueness of boundary blow-up solutions to elliptic equations [PDF]

open access: yes, 2014
In this paper, under some structural assumptions of weight function $b(x)$ and nonlinear term $f(u)$, we establish the asymptotic behavior and uniqueness of boundary blow-up solutions to semilinear elliptic equations \begin{equation*} \begin{cases ...
Tian, Qiaoyu, Xu, Yonglin
core   +6 more sources

Some recent results on singular p-Laplacian equations

open access: yesDemonstratio Mathematica, 2022
A short account of some recent existence, multiplicity, and uniqueness results for singular p-Laplacian problems either in bounded domains or in the whole space is performed, with a special attention to the case of convective reactions.
Guarnotta Umberto   +2 more
doaj   +1 more source

Symmetry of solutions to singular fractional elliptic equations and applications

open access: yes, 2020
In this article, we study the symmetry of positive solutions to a class of singular semilinear elliptic equations whose prototype is (P ) { (−∆)s u = 1 uδ + f (u), u > 0 inΩ; u = 0 in Rn \Ω, where 0 < s < 1, n ≥ 2s, Ω = Br (0) ⊂ Rn , δ > 0, f (u) is a ...
R. Arora   +3 more
semanticscholar   +1 more source

Touchdown solutions in general MEMS models

open access: yesAdvances in Nonlinear Analysis, 2023
We study general problems modeling electrostatic microelectromechanical systems devices (Pλ )φ(r,−u′(r))=λ∫0rf(s)g(u(s))ds,r∈(0,1 ...
Clemente Rodrigo   +3 more
doaj   +1 more source

A note on the complete rotational invariance of biradial solutions to semilinear elliptic equations [PDF]

open access: yes, 2010
We investigate symmetry properties of solutions to equations of the form $$ -\Delta u = \frac{a}{|x|^2} u + f(|x|, u)$$ in R^N for $N \geq 4$, with at most critical nonlinearities.
Abatangelo, L., Terracini, S.
core   +1 more source

Parametric singular double phase Dirichlet problems

open access: yesAdvances in Nonlinear Analysis, 2023
We consider a parametric (with two parameters μ,λ>0\mu ,\lambda \gt 0) Dirichlet problem driven by the double phase differential operator and a reaction which has the competing effect of a singular term and of a superlinear perturbation.
Bai Yunru   +2 more
doaj   +1 more source

Dirichlet problems involving the Hardy-Leray operators with multiple polars

open access: yesAdvances in Nonlinear Analysis, 2023
Our aim of this article is to study qualitative properties of Dirichlet problems involving the Hardy-Leray operator ℒV≔−Δ+V{{\mathcal{ {\mathcal L} }}}_{V}:= -\Delta +V, where V(x)=∑i=1mμi∣x−Ai∣2V\left(x)={\sum }_{i=1}^{m}\frac{{\mu }_{i}}{{| x-{A}_{i}| }
Chen Huyuan, Chen Xiaowei
doaj   +1 more source

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