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arXiv · 1911.12680

Vertical quasi-isometries and branched quasisymmetries

Jeff Lindquist·Pekka Pankka
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Abstract

We introduce a class of mappings called vertical quasi-isometries and show that branched quasisymmetries $X\to Y$ of Guo and Williams between compact, bounded turning metric doubling spaces admit natural vertically quasi-isometric extensions $\widehat X\to \widehat Y$ between hyperbolic fillings $\widehat X$ and $\widehat Y$ of $X$ and $Y$, respectively. We also give a converse for this result by showing that a finite multiplicity vertical quasi-isometry $\widehat X \to \widehat Y$ between hyperbolic fillings induces a branched quasisymmetry $X \to Y$.

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Jeff Lindquist, Pekka Pankka. 2019-11-28. Vertical quasi-isometries and branched quasisymmetries. https://arxiv.org/abs/1911.12680

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