Lifting in fractional Sobolev spaces and in VMO

Haïm Brezis, Petru Mironescu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

This chapter is a follow-up to Chapter 1. We consider again maps u: Ω→ S1, with Ω⊂ RN, N≥ 1, smooth bounded simply connected, and our goal is to find a lifting φ “as smooth as u permits.” The difference with Chapter 1 is that u belongs either to a fractional Sobolev space Ws , p (whose definition is recalled in Section 5.1), or to the space VMO (functions of vanishing mean oscillation, whose definition is recalled in Section 5.2.1 below).

Original languageEnglish (US)
Title of host publicationProgress in Nonlinear Differential Equations and Their Application
PublisherBirkhauser
Pages205-226
Number of pages22
DOIs
StatePublished - 2021

Publication series

NameProgress in Nonlinear Differential Equations and Their Application
Volume96
ISSN (Print)1421-1750
ISSN (Electronic)2374-0280

All Science Journal Classification (ASJC) codes

  • Analysis
  • Computational Mechanics
  • Mathematical Physics
  • Control and Optimization
  • Applied Mathematics

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