English

Quasiconformal harmonic mappings between two doubly connected domains in the plane

Complex Variables 2021-05-24 v2

Abstract

It is known for some time that there exists an energy-minimal diffeomorphism between two doubly-connected domains Ω\Omega and DD provided that Mod(Ω)ModD\mathrm{Mod}(\Omega)\le \mathrm{Mod}{D} and that diffeomorphism is harmonic \cite{tedi}. In this note we give a short proof of the fact that for given annuli Ω\Omega and DD satisfying the condition Mod(Ω)Mod(D)\mathrm{Mod}(\Omega)\le \mathrm{Mod}(D) there exist a KK-quasiconformal harmonic diffeomorphism f:Ω\ontoDf:\Omega\onto D, where K=K(τ)K=K(\tau), τ=Mod(Ω)/Mod(D)\tau=\mathrm{Mod}(\Omega)/ \mathrm{Mod}(D) and limτ1K(τ)=1\lim_{\tau\to 1}K(\tau)=1.

Keywords

Cite

@article{arxiv.2102.08648,
  title  = {Quasiconformal harmonic mappings between two doubly connected domains in the plane},
  author = {David Kalaj},
  journal= {arXiv preprint arXiv:2102.08648},
  year   = {2021}
}

Comments

Lemma 2.1 as it is stated is not correct, so the main theorem needed different proof