Research reports

The Gevrey class implicit mapping theorem with application to UQ of semilinear elliptic PDEs

by H. Harbrecht and M. Schmidlin and Ch. Schwab

(Report number 2023-36)

Abstract
This article is concerned with a regularity analysis of parametric operator equations with a perspective on uncertainty quantification. We study the regularity of mappings between Banach spaces near branches of isolated solutions that are implicitly defined by a residual equation. Under \(s\)-Gevrey assumptions on on the residual equation, we establish \(s\)-Gevrey bounds on the Fr\'echet derivatives of the local data-to-solution mapping. This abstract framework is illustrated in a proof of regularity bounds for a semilinear elliptic partial differential equation with parametric and random field input.

Keywords: Implicit mappings, parametric regularity, uncertainty quantification, semilinear elliptic PDEs

BibTeX
@Techreport{HSS23_1073,
  author = {H. Harbrecht and M. Schmidlin and Ch. Schwab},
  title = {The Gevrey class implicit mapping theorem with application to UQ of semilinear elliptic PDEs},
  institution = {Seminar for Applied Mathematics, ETH Z{\"u}rich},
  number = {2023-36},
  address = {Switzerland},
  url = {https://www.sam.math.ethz.ch/sam_reports/reports_final/reports2023/2023-36.pdf },
  year = {2023}
}

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