A Remark on the Level Sets of the Graph of Harmonic Functions Bounded by Two Circles in Parallel Planes
被引量：1
A Remark on the Level Sets of the Graph of Harmonic Functions Bounded by Two Circles in Parallel Planes
摘要
In this paper, we find two auxiliary functions and make use of the maximum principle to study the level sets of harmonic function defined on a convex ring with homogeneous Dirichlet boundary conditions in R2. In higher dimensions, we also have a similar result to Jagy＇s.
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