On the extremal length of the hyperbolic metric

Fuente: arXiv
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Main Author: Masai, Hidetoshi
Format: Preprint
Published: 2025
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author Masai, Hidetoshi
author_facet Masai, Hidetoshi
contents For any closed hyperbolic Riemann surface $X$, we show that the extremal length of the Liouville current is determined solely by the topology of \(X\). This confirms a conjecture of Martínez-Granado and Thurston. We also obtain an upper bound, depending only on $X$, for the diameter of extremal metrics on $X$ with area one.
format Preprint
id arxiv_https___arxiv_org_abs_2505_12400
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the extremal length of the hyperbolic metric
Masai, Hidetoshi
Geometric Topology
Complex Variables
Primary 30F30, Secondary 30C70, 30F45, 32G15
For any closed hyperbolic Riemann surface $X$, we show that the extremal length of the Liouville current is determined solely by the topology of \(X\). This confirms a conjecture of Martínez-Granado and Thurston. We also obtain an upper bound, depending only on $X$, for the diameter of extremal metrics on $X$ with area one.
title On the extremal length of the hyperbolic metric
topic Geometric Topology
Complex Variables
Primary 30F30, Secondary 30C70, 30F45, 32G15
url https://arxiv.org/abs/2505.12400