The Dirichlet-to-Neumann map, the boundary Laplacian, and Hörmander's rediscovered manuscript

12 Feb 2021 Alexandre Girouard Mikhail Karpukhin Michael Levitin Iosif Polterovich

How close is the Dirichlet-to-Neumann (DtN) map to the square root of the corresponding boundary Laplacian? This question has been actively investigated in recent years... (read more)

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Categories


  • SPECTRAL THEORY
  • DIFFERENTIAL GEOMETRY
  • PRIMARY 58J50. SECONDARY 35P20