English

Quasisymmetric Koebe Uniformization of metric surfaces

Complex Variables 2025-08-26 v1

Abstract

We study when a metric surface XX can be mapped quasisymmetrically onto a circle domain DCD\subset\mathbb{C} with uniformly relatively separated boundary components. Bonk \cite{Bonk} proved that if XC^X\subset \hat{\mathbb{C}} and the boundary components of XX are uniformly relatively separated uniform quasicircles then XX is quasisymmetric to a circle domain. Merenkov and Wildrick \cite{Merenkov Wildrick} showed that Bonk's condition is not sufficient in the non-planar case. We prove that under some mild assumptions, a metric surface is quasisymmetric to a circle domain with uniformly relatively separated boundary components if and only if it is 2-TLP. The latter is a version of a condition introduced and studied by Bonk \cite{Bonk}. This answers a question of Merenkov and Wildrick in \cite{Merenkov Wildrick} and it is also a natural generalization of Bonk's result to non-planar metric surfaces.

Keywords

Cite

@article{arxiv.2508.17806,
  title  = {Quasisymmetric Koebe Uniformization of metric surfaces},
  author = {Hrant Hakobyan and Jonathan Rehmert},
  journal= {arXiv preprint arXiv:2508.17806},
  year   = {2025}
}