Spectral stability estimates of neumann divergence form elliptic operators

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We study spectral stability estimates of elliptic operators in divergence form -div[A(w)rg(w)] with the Neumann boundary condition in domains Ω C which satisfy the quasihyperbolic boundary condition. This class of domains includes Lipschitz domains, Hölder singular domains and some fractal type domains like snowakes. The suggested method is based on connections of quasiconformal mappings and Sobolev spaces with applications to the Poincare type inequalities.

Original languageEnglish
Pages (from-to)131-147
Number of pages17
JournalMathematical Reports
Issue number1-2
StatePublished - 1 Jan 2021


  • Elliptic equations
  • Quasiconformal mappings
  • Sobolev spaces

ASJC Scopus subject areas

  • Analysis
  • Algebra and Number Theory
  • Geometry and Topology
  • Applied Mathematics


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