Equations of Mean Curvature Type

  • David Gilbarg
  • Neil S. Trudinger
Part of the Grundlehren der mathematischen Wissenschaften book series (GL, volume 224)


In this chapter we focus attention on both the prescribed mean curvature equation,
$$ Mu = \left( {1 + \left| {Du} \right|^2 } \right)\Delta u - D_i uD_j uD_{ij} u = nH\left( {1 + \left| {Du} \right|^2 } \right)^{{3 \mathord{\left/ {\vphantom {3 2}} \right. \kern-\nulldelimiterspace} 2}} , $$
and a related family of equations in two variables. Our main concern is with interior derivative estimates for solutions. We shall see that not only can interior gradient bounds be established for solutions of these equations but that also their non-linearity leads to strong second derivative estimates which distinguish them from uniformly elliptic equations such as Laplace’s equation. In particular we shall derive an extension of the classical result of Bernstein that a C 2(ℝ2) solution of the minimal surface equation in ℝ2 must be a linear function (Theorem 15.12).




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Copyright information

© Springer-Verlag Berlin Heidelberg 1977

Authors and Affiliations

  • David Gilbarg
    • 1
  • Neil S. Trudinger
    • 2
  1. 1.Department of MathematicsStanford UniversityStanfordUSA
  2. 2.Department of Pure MathematicsAustralian National UniversityCanberraAustralia

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