2 papers
math.AP2016
Solutions to overdetermined elliptic problems in nontrivial exterior domains
Antonio Ros, David Ruiz, Pieralberto Sicbaldi
In this paper we construct nontrivial exterior domains , for all , such that the problem $$\left\{ {ll} -Δu +u -u^p=0,\ u >0 & \mbox{in }\; Ω, {1mm]…
math.DG2014
New examples of extremal domains for the first eigenvalue of the Laplace-Beltrami operator in a Riemannian manifold with boundary
Jimmy Lamboley, Pieralberto Sicbaldi
We build new examples of extremal domains with small prescribed volume for the first eigenvalue of the Laplace-Beltrami operator in some Riemannian manifold with boundary. These do…