The exterior Calderón operator for non-spherical objects

Gerhard Kristensson, Ioannis Stratis, Niklas Wellander, Athanasios Yannacopoulos

Research output: Contribution to journalArticlepeer-review

Abstract

This paper deals with the exterior Calderón operator for not necessarily spherical domains. We present a new approach of finding the norm of the exterior Calderón operator for a wide class of surfaces. The basic tool in the treatment is the set of eigenfunctions and eigenvalues to the Laplace–Beltrami operator for the surface. The norm is obtained in view of an eigenvalue problem of a quadratic form containing the exterior Calderón operator. The connection of the exterior Calderón operator to the transition matrix for a perfectly conducting surface is analyzed.
Original languageEnglish
Number of pages32
JournalSN Partial Differential Equations and Applications
Volume1
Issue number6
DOIs
Publication statusPublished - 2020

Subject classification (UKÄ)

  • Mathematical Analysis

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