The non-parametric problem of Plateau in arbitrary codimension

Details The non-parametric problem of Plateau in arbitrary codimension The non-parametric problem of Plateau in arbitrary codimension

2004-11-26

arxiv.org/abs/math/0411589v1

Mathematics

Analysis of PDEs

Master's thesis. Advisor: Mariano Giaquinta

Scientific paper

We study the problem of finding a minimal graph with prescribed boundary data in arbitrary dimension and codimension. Existence, uniqueness, stability and regularity are treated. We first present the well-known results for codimension one: Jenkins-Serrin's existence theorem, convexity properties of the area which give uniqueness and stability and De Giorgi's theorem for regularity. In higher codimension we first discuss the counterexamples of Lawson and Osserman. Then we present the recent results of Mu-Tao Wang: we use the mean curvature flow to show existence for small boundary data and we prove a new Bernstein theorem (also due to Mu-Tao Wang) which holds for every area-decreasing minimal graph. We finally deduce from the Bernstein theorem that an area-decreasing minimal graph is always smooth.

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