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arXiv · 1412.5110

Weak chord-arc curves and double-dome quasisymmetric spheres

Vyron Vellis
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Abstract

Let $\Omega$ be a planar Jordan domain and $\alpha>0$. We consider double-dome-like surfaces $\Sigma(\Omega,t^{\alpha})$ over $\overline{\Omega}$ where the height of the surface over any point $x\in\overline{\Omega}$ equals $\text{dist}(x,\partial\Omega)^{\alpha}$. We identify the necessary and sufficient conditions in terms of $\Omega$ and $\alpha$ so that these surfaces are quasisymmetric to $\mathbb{S}^2$ and we show that $\Sigma(\Omega,t^{\alpha})$ is quasisymmetric to the unit sphere $\mathbb{S}^2$ if and only if it is linearly locally connected and Ahlfors $2$-regular.

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Vyron Vellis. 2014-12-16. Weak chord-arc curves and double-dome quasisymmetric spheres. https://doi.org/10.1515/agms-2016-0002

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