English

Limits at infinity for Haj{\l}asz-Sobolev functions in metric spaces

Classical Analysis and ODEs 2025-06-06 v1 Analysis of PDEs

Abstract

We study limits at infinity for homogeneous Hajlasz-Sobolev functions defined on uniformly perfect metric spaces equipped with a doubling measure. We prove that a quasicontinuous representative of such a function has a pointwise limit at infinity outside an exceptional set, defined in terms of a variational relative capacity. Our framework refines earlier approaches that relied on Hausdorff content rather than relative capacity, and it extends previous results for homogeneous Newtonian and fractional Sobolev functions.

Keywords

Cite

@article{arxiv.2506.05037,
  title  = {Limits at infinity for Haj{\l}asz-Sobolev functions in metric spaces},
  author = {Angha Agarwal and Antti V. Vähäkangas},
  journal= {arXiv preprint arXiv:2506.05037},
  year   = {2025}
}