English

Smooth extensions of Sobolev boundary data in corkscrew domains with uniformly rectifiable boundaries

Classical Analysis and ODEs 2025-11-14 v1

Abstract

Given a corkscrew domain with uniformly rectifiable boundary, we construct a surjective trace map onto the LpL^p Hajlasz-Sobolev space on the boundary from the space of functions on the domain with LpL^p norm involving the non-tangential maximal function of the gradient and the conical square function of the Hessian. This fundametally uses the Dorronsoro theorem for UR sets proven in a companion paper.

Keywords

Cite

@article{arxiv.2511.10137,
  title  = {Smooth extensions of Sobolev boundary data in corkscrew domains with uniformly rectifiable boundaries},
  author = {Jonas Azzam and Mihalis Mourgoglou and Michele Villa},
  journal= {arXiv preprint arXiv:2511.10137},
  year   = {2025}
}

Comments

This articles comes from the preprint arXiv:2306.13017, which we split in two for readability's sake