The Frankel property for self-shrinkers from the viewpoint of elliptic PDE's

Abstract

We show that two properly embedded self-shrinkers in Euclidean space that are sufficiently separated at infinity must intersect at a finite point. The proof is based on a localized version of the Reilly formula applied to a suitable f-harmonic function with controlled gradient. In the immersed case, a new direct proof of the generalized half-space property is also presented.

20 pages. Final version. To appear in J. Reine Angew. Math