An inverse boundary value problem for the p-Laplacian: A linearization approach

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This work tackles an inverse boundary value problem for a p-Laplace type partial differential equation parametrized by a smoothening parameter T ≥ 0. The aim is to numerically test reconstructing a conductivity type coefficient in the equation when Dirichlet boundary values of certain solutions to the corresponding Neumann problem serve as data. The numerical studies are based on a straightforward linearization of the forward map, and they demonstrate that the accuracy of such an approach depends nontrivially on 1 < p < ∞ and the chosen parametrization for the unknown coefficient. The numerical considerations are complemented by proving that the forward operator, which maps a Hölder continuous conductivity coefficient to the solution of the Neumann problem, is Fréchet differentiable, excluding the degenerate case T = 0 that corresponds to the classical (weighted) -Laplace equation.

Original languageEnglish
Article number034001
JournalInverse Problems
Issue number3
Publication statusPublished - 28 Jan 2019
MoE publication typeA1 Journal article-refereed


  • Bayesian inversion
  • inverse boundary value problem
  • linearization
  • p-Laplacian


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