Results 51 to 60 of about 2,493,959 (162)

Concentration–Compactness Principle to a Weighted Moser–Trudinger Inequality and Its Application

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
We employ level‐set analysis of functions to establish a sharp concentration–compactness principle for the Moser–Trudinger inequality with power weights in R+2. Furthermore, we systematically prove the existence of ground state solutions to the associated nonlinear partial differential equation.
Yubo Ni, Agacik Zafer
wiley   +1 more source

The Palais-Smale Condition on Contact Type Energy Levels for Convex Lagrangian Systems [PDF]

open access: yes, 2003
Let L be a convex superlinear autonomous Lagrangian on a closed con- nected manifold N. We consider critical values of Lagrangians as de ned by R. Ma~ne in [23]. We de ne energy levels satisfying the Palais-Smale condition and we show that the critical
GONZALO ALBERTO CONTRERAS BARANDIARAN
core  

Failure of Plais-Smale condition and blow-up analysis for the critical exponent problem in R2 [PDF]

open access: yes, 1997
Let Ω be a bounded smooth domain inR2. Letf:R→R be a smooth non-linearity behaving like exp{s2} ass→∞. LetF denote the primitive off. Consider the functionalJ:H01(Ω)→R given by J(u)=12∫Ω|∇u|2dx−∫ΩF(u)dx.
Adimurthi, ., Prashanth, S.
core   +1 more source

An estimate on the relative Morse index for strongly indefinite functionals

open access: yesElectronic Journal of Differential Equations, 2001
We extend the Benci and Rabinowitz linking theorem to strongly indefinite functionals satisfying the Palais-Smale condition. More precisely, we show an upper estimate for a relative Morse index of critical points.
A. Abbondandolo, P. Felmer, J. Molina
doaj  

Multiplicity Results of Solutions to the Fractional p-Laplacian Problems of the Kirchhoff–Schrödinger–Hardy Type

open access: yesMathematics
This paper is devoted to establishing multiplicity results of nontrivial weak solutions to the fractional p-Laplacian equations of the Kirchhoff–Schrödinger type with Hardy potentials.
Yun-Ho Kim
doaj   +1 more source

Existence and Nonexistence of Periodic Solutions for a Class of Fourth‐Order Partial Difference Equations

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In this paper, we investigate multiplicity, existence, and nonexistence of periodic solutions to a fourth‐order partial difference equation via linking theorem and saddle point theorem. Our obtained results significantly generalize and improve some existing ones.
Dan Li, Yuhua Long, Ji Gao
wiley   +1 more source

Existence and multiplicity of solutions for Dirichlet problems involving the p(x)-Laplace operator

open access: yesElectronic Journal of Differential Equations, 2013
In this article, we study superlinear Dirichlet problems involving the p(x)-Laplace operator without using the Ambrosetti-Rabinowitz's superquadraticity condition.
Mustafa Avci
doaj  

Planar Choquard equations with critical exponential reaction and Neumann boundary condition

open access: yesMathematische Nachrichten, Volume 297, Issue 10, Page 3847-3869, October 2024.
Abstract We study the existence of positive weak solutions for the following problem: −Δu+α(x)u=∫ΩF(y,u)|x−y|μ1dyf(x,u)inΩ,∂u∂η+βu=∫∂ΩG(y,u)|x−y|μ2dνg(x,u)on∂Ω,$$\begin{equation*} \begin{aligned} \hspace*{65pt}-\Delta u + \alpha (x) u &= {\left(\int \limits _{\Omega }\frac{F(y,u)}{|x-y|^{{\mu _1}}}\;dy\right)}f(x,u) \;\;\text{in} \; \Omega,\\ \hspace ...
Sushmita Rawat   +2 more
wiley   +1 more source

Asymptotic behavior of Palais-Smale sequences associated with fractional Yamabe type equations [PDF]

open access: yes, 2014
preprintIn this paper, we analyze the asymptotic behavior of Palais-Smale sequences associated to fractional Yamabe type equations on an asymptotically hyperbolic Riemannian manifold.
María del Mar González Nogueras   +3 more
core   +4 more sources

Multiple solutions for nonlinear discontinuous strongly resonant elliptic problems

open access: yesAbstract and Applied Analysis, 2000
We consider quasilinear strongly resonant problems with discontinuous right-hand side. To develop an existence theory we pass to a multivalued problem by, roughly speaking, filling in the gaps at the discontinuity points.
Nikolaos C. Kourogenis   +1 more
doaj   +1 more source

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