Existence of solutions to nonlocal and singular elliptic problems via Galerkin method.
Francisco Júlio S. A. Corrêa, Silvano D.B. Menezes · DOAJ (DOAJ: Directory of Open Access Journals) · 2004
We study the existence of solutions to the nonlocal elliptic equation $$ -M(|u|^2)Delta u = f(x,u) $$ with zero Dirichlet boundary conditions on a bounded and smooth domain of $mathbb{R}^n$. We consider the $M$-linear case with $fin H^{-1}(Omega )$, and the sub-linear case $f(u)=u^{alpha}$, $0<alpha <1$. Our main tool is the Galerkin method for both cases when $M$ continuous and when $M$ is discontinuous.