Solutions to general elliptic equations on nearly geodesically convex domains with many critical points

Abstract

Consider a complete $d$-dimensional Riemannian manifold $(\mathcal M,g)$, a point $p\in\mathcal M$ and a nonlinearity $f(q,u)$ with $f(p,0)>0$. We prove that for any odd integer $N\ge3$, there exists a sequence of smooth domains $\Omega_k\subset\mathcal M$ containing $p$ and corresponding positive solutions $u_k:\Omega_k\to\R^+$ to the Dirichlet boundary problem