Results 1 to 10 of about 328 (51)

Coupled and uncoupled sign-changing spikes of singularly perturbed elliptic systems [PDF]

open access: yesCommunications in Contemporary Mathematics, 2021
We study the existence and asymptotic behavior of solutions having positive and sign-changing components to the singularly perturbed system of elliptic equations in a bounded domain Ω in R N , with N ≥ 4, ε > 0, µ i > 0, λ ij = λ ji < 0, α ij , β ij > 1,
M. Clapp, M. Soares
semanticscholar   +1 more source

A reverse quantitative isoperimetric type inequality for the Dirichlet Laplacian [PDF]

open access: yesRendiconti Lincei - Matematica e Applicazioni, 2021
A stability result in terms of the perimeter is obtained for the first Dirichlet eigenvalue of the Laplacian operator. In particular, we prove that, once we fix the dimension n ě 2, there exists a constant c ą 0, depending only on n, such that, for every
Gloria Paoli
semanticscholar   +1 more source

Nonnegative Solutions of a Nonlinear System and Applications to Elliptic BVPs*

open access: yesJournal of Applied Mathematics and Bioinformatics, 2021
In this communication, we study the existence of nonnegative solutions of a nonlinear system in Banach spaces. These maps involved in the system defined on cone do not necessarily take values in the cone.
Guangchong Yang, Yanqiu Chen
semanticscholar   +1 more source

Dynamical analysis of a reaction–diffusion mosquito-borne model in a spatially heterogeneous environment

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we formulate and perform a strict analysis of a reaction–diffusion mosquito-borne disease model with total human populations stabilizing at H(x) in a spatially heterogeneous environment.
Wang Jinliang, Wu Wenjing, Li Chunyang
doaj   +1 more source

On the Asymptotic Behavior of D-Solutions to the Displacement Problem of Linear Elastostatics in Exterior Domains [PDF]

open access: yes, 2020
We study the asymptotic behavior of solutions with finite energy to the displacement problem of linear elastostatics in a three-dimensional exterior Lipschitz ...
Coscia, Vincenzo
core   +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

Global bifurcation of coexistence states for a prey-predator model with prey-taxis/predator-taxis

open access: yesAdvanced Nonlinear Studies, 2023
This article is concerned with the stationary problem for a prey-predator model with prey-taxis/predator-taxis under homogeneous Dirichlet boundary conditions, where the interaction is governed by a Beddington-DeAngelis functional response.
Li Shanbing, Wu Jianhua
doaj   +1 more source

Three weak solutions for a Neumann elliptic equations involving the p→(x)\vec p\left( x \right)-Laplacian operator

open access: yesNonautonomous Dynamical Systems, 2020
The aim of this paper is to establish the existence of at least three weak solutions for the following elliptic Neumann problem {-Δp→(x)u+α(x)|u|p0(x)-2u=λf(x,u)inΩ,∑i=1N|∂u∂xi|pi(x)-2∂u∂xiγi=0on∂Ω,\left\{ {\matrix{ { - {\Delta _{\vec p\left( x \right)}}
Ahmed Ahmed   +1 more
doaj   +1 more source

EXISTENCE OF MULTIPLE POSITIVE RADIAL SOLUTIONS TO ELLIPTIC EQUATIONS IN AN ANNULUS

open access: yesCommunications in Applied Analysis, 2018
In this paper, we use Leggett-Williams multiple fixed point theorems to obtain sufficient conditions for the existence of at least one or two positive radial solutions of the equation −∆u = λg(|x|)f(u), R1 < |x| < R2, x ∈ RN , N ≥ 2 subject to a linear ...
Jaffar Ali, S. Padhi
semanticscholar   +1 more source

Properties for Nonlinear Fractional SubLaplace Equations on the Heisenberg Group

open access: yesJournal of Partial Differential Equations, 2019
The aim of the paper is to study properties of solutions to the nonlinear fractional subLaplace equations on the Heisenberg group. Based on the method of moving planes to the Heisenberg group, we prove the Liouville property of solutions on a half space ...
Xin-Guang Yang and Shubin Wang sci
semanticscholar   +1 more source

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