Results 1 to 10 of about 377 (53)

Some remarks on segregation of $k$ species in strongly competing systems [PDF]

open access: yesInterfaces and free boundaries (Print), 2021
Spatial segregation occurs in population dynamics when k species interact in a highly competitive way. As a model for the study of this phenomenon, we consider the competitiondiffusion system of k differential equations −∆ui(x) = −μui(x) ∑ j 6=i uj(x) i =
F. Lanzara, Eugenio Montefusco
semanticscholar   +1 more source

Solutions for nonhomogeneous fractional (p, q)-Laplacian systems with critical nonlinearities

open access: yesAdvances in Nonlinear Analysis, 2022
In this article, we aimed to study a class of nonhomogeneous fractional (p, q)-Laplacian systems with critical nonlinearities as well as critical Hardy nonlinearities in RN{{\mathbb{R}}}^{N}.
Tao Mengfei, Zhang Binlin
doaj   +1 more source

Positive solution for a class of coupled (p,q)-Laplacian nonlinear systems

open access: yesBoundary Value Problems, 2014
In this article, we prove the existence of a nontrivial positive solution for the elliptic system {−Δpu=ω(x)f(v)in Ω,−Δqv=ρ(x)g(u)in Ω,(u,v)=(0,0)on ∂Ω, where Δp denotes the p-Laplacian operator, p,q>1 and Ω is a smooth bounded domain in RN (N≥2).
E. M. Martins, W. Ferreira
semanticscholar   +2 more sources

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

A generalization of the Hopf-Cole transformation for stationary Mean Field Games systems [PDF]

open access: yes, 2015
In this note we propose a transformation which decouples stationary Mean Field Games systems with superlinear Hamiltonians of the form |p|^r, and turns the Hamilton-Jacobi-Bellman equation into a quasi-linear equation involving the r-Laplace operator ...
Cirant, Marco
core   +3 more sources

Singular quasilinear convective elliptic systems in ℝN

open access: yesAdvances in Nonlinear Analysis, 2022
The existence of a positive entire weak solution to a singular quasi-linear elliptic system with convection terms is established, chiefly through perturbation techniques, fixed point arguments, and a priori estimates.
Guarnotta Umberto   +2 more
doaj   +1 more source

Nonzero Positive Solutions of Elliptic Systems with Gradient Dependence and Functional BCs

open access: yesAdvanced Nonlinear Studies, 2020
We discuss, by topological methods, the solvability of systems of second-order elliptic differential equations subject to functional boundary conditions under the presence of gradient terms in the nonlinearities.
Biagi Stefano   +2 more
doaj   +1 more source

Analytical validation of the finite element method model for Laplace equation

open access: yesJournal of Applied Mathematics and Computational Mechanics, 2019
The presented paper is focused on the comparison of the numerical solution of the Laplace equation in a two-dimensional space with the results obtained with the use of the analytical method.
E. Wegrzyn-Skrzypczak, T. Skrzypczak
semanticscholar   +1 more source

Asymptotic analysis for some linear eigenvalue problems via Gamma-Convergence

open access: yesAdvances in Differential Equations, 2010
This paper is devoted to the analysis of the asymptotic behaviour when the parameter λ goes to +∞ for operators of the form −∆+λa or more generally, cooperative systems operators of the form (−∆+λa −b −c −∆+λd ) where the potentials a and d vanish in ...
P. Álvarez-Caudevilla, A. Lemenant
semanticscholar   +1 more source

Existence of nontrivial solutions for the Klein-Gordon-Maxwell system with Berestycki-Lions conditions

open access: yesAdvances in Nonlinear Analysis, 2023
In this article, we study the following Klein-Gordon-Maxwell system: −Δu−(2ω+ϕ)ϕu=g(u),inR3,Δϕ=(ω+ϕ)u2,inR3,\left\{\phantom{\rule[-1.25em]{}{0ex}}\begin{array}{l}-\Delta u-\left(2\omega +\phi )\phi u=g\left(u),\hspace{1.0em}{\rm{in}}\hspace{1em}{{\mathbb{
Liu Xiao-Qi, Li Gui-Dong, Tang Chun-Lei
doaj   +1 more source

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