Results 1 to 10 of about 369 (47)

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

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

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

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

(p,Q) systems with critical singular exponential nonlinearities in the Heisenberg group

open access: yesOpen Mathematics, 2020
The paper deals with the existence of solutions for (p,Q)(p,Q) coupled elliptic systems in the Heisenberg group, with critical exponential growth at infinity and singular behavior at the origin.
Pucci Patrizia, Temperini Letizia
doaj   +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

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

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

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