Results 21 to 30 of about 741 (89)

Optimal Hardy-weights for the $(p,A)$-Laplacian with a potential term [PDF]

open access: yesarXiv, 2021
We construct new optimal $L^p$ Hardy-type inequalities for elliptic Schr\"odinger-type ...
arxiv  

On some nonlinear Schrödinger equations in $\bbr^N$ [PDF]

open access: yesarXiv, 2021
In this paper, we introduce some new ideas to study Schrodinger equations in RN with power-type nonlinearities.
arxiv  

Positive solutions for a nonhomogeneous Schrödinger-Poisson system

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we consider the following Schrödinger-Poisson system: −Δu+u+k(x)ϕ(x)u=f(x)∣u∣p−1u+g(x),x∈R3,−Δϕ=k(x)u2,x∈R3,\left\{\begin{array}{ll}-\Delta u+u+k\left(x)\phi \left(x)u=f\left(x)| u{| }^{p-1}u+g\left(x),& x\in {{\mathbb{R}}}^{3 ...
Zhang Jing, Niu Rui, Han Xiumei
doaj   +1 more source

Study of periodic and nonnegative periodic solutions of nonlinear neutral functional differential equations via fixed points

open access: yesActa Universitatis Sapientiae: Mathematica, 2016
In this paper, we study the existence of periodic and non-negative periodic solutions of the nonlinear neutral differential equation ddtx(t)=−a (t) h (x (t))+ddtQ (t, x (t−τ (t)))+G (t, x(t), x (t−τ (t))).$${{\rm{d}} \over {{\rm{dt}}}}{\rm{x}}({\rm{t}}) =
Mesmouli Mouataz Billah   +2 more
doaj   +1 more source

Symmetric results of a Hénon-type elliptic system with coupled linear part

open access: yesOpen Mathematics, 2022
In this article, we study the elliptic system: −Δu+μ1u=∣x∣αu3+λv,x∈Ω−Δv+μ2v=∣x∣αv3+λu,x∈Ωu,v>0,x∈Ω,u=v=0,x∈∂Ω,\left\{\begin{array}{ll}-\Delta u+{\mu }_{1}u=| x\hspace{-0.25em}{| }^{\alpha }{u}^{3}+\lambda v,& x\in \Omega \\ -\Delta v+{\mu }_{2}v=| x ...
Lou Zhenluo, Li Huimin, Zhang Ping
doaj   +1 more source

Nonzero positive solutions of a multi-parameter elliptic system with functional BCs

open access: yes, 2017
We prove, by topological methods, new results on the existence of nonzero positive weak solutions for a class of multi-parameter second order elliptic systems subject to functional boundary conditions. The setting is fairly general and covers the case of
Infante, Gennaro
core   +1 more source

Harnack's estimate for a mixed local-nonlocal doubly nonlinear parabolic equation [PDF]

open access: yesarXiv, 2022
We establish Harnack's estimates for positive weak solutions to a mixed local and nonlocal doubly nonlinear parabolic equation. All results presented in this paper are provided together with quantitative estimates.
arxiv  

Eigenvalues of elliptic functional differential systems via a Birkhoff--Kellogg type theorem [PDF]

open access: yesMathematics 2021, 9, no. 1: 4, 2020
Motivated by recent interest on Kirchhoff-type equations, in this short note we utilize a classical, yet very powerful, tool of nonlinear functional analysis in order to investigate the existence of positive eigenvalues of systems of elliptic functional differential equations. An example is presented to illustrate the theory.
arxiv   +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

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