Electronic Journal of Qualitative Theory of Differential Equations (Oct 2016)
On positive solutions of the Dirichlet problem involving the extrinsic mean curvature operator
Abstract
In this paper, we are concerned with necessary conditions for the existence of positive solutions of the Dirichlet problem for the prescribed mean curvature equation in Minkowski space \begin{equation*} \begin{aligned} -\text{div}\left(\frac {\nabla u}{\sqrt{1-|\nabla u|^2}}\right)&=f(u) &\quad &\text{in}\ \Omega,\\ u&=0 &\quad &\text{on}\ \partial \Omega, \end{aligned} \end{equation*} whose supremum norm bears a certain relationship to zeros of the nonlinearity $f$.
Keywords