Article ID Journal Published Year Pages File Type
4611502 Journal of Differential Equations 2010 8 Pages PDF
Abstract

We consider the entire graph S of a continuous real function over RN−1 with N⩾3. Let Ω be a domain in RN with S as a boundary. Consider in Ω the heat flow with initial temperature 0 and boundary temperature 1. The problem we consider is to characterize S in such a way that there exists a stationary isothermic surface in Ω. We show that S must be a hyperplane under some general conditions on S. This is related to Liouville or Bernstein-type theorems for some elliptic Monge–Ampère-type equation.

Related Topics
Physical Sciences and Engineering Mathematics Analysis