Holomorphic Curves in Moduli Spaces Are Quasi-Isometrically Immersed

Fuente: arXiv
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Autore principale: Zhang, Yibo
Natura: Preprint
Pubblicazione: 2024
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author Zhang, Yibo
author_facet Zhang, Yibo
contents A holomorphic curve in moduli spaces is the image of a non-constant holomorphic map from a hyperbolic surface $B$ of type $(g,n)$ to the moduli space $\mathcal{M}_h$ of closed Riemann surfaces of genus $h$. We show that, when all peripheral monodromies are of infinite order, the holomorphic map is a quasi-isometric immersion with parameters depending only on $g$, $n$, $h$ and the systole of $B$. When peripheral monodromies also satisfy an additional condition, we find a lift quasi-isometrically embedding a fundamental polygon of the hyperbolic surface $B$ into the Teichmüller space. We further improve the Parshin-Arakelov finiteness theorem, by proving that there are only finitely many monodromy homomorphisms induced by holomorphic curves of type $(g,n)$ in $\mathcal{M}_h$ where systole is bounded away from $0$, up to equivalence.
format Preprint
id arxiv_https___arxiv_org_abs_2401_09327
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Holomorphic Curves in Moduli Spaces Are Quasi-Isometrically Immersed
Zhang, Yibo
Geometric Topology
Metric Geometry
14 D 06, 30 F 60, 32 G 15, 32 S 50, 57 K 20, 57 K 40
A holomorphic curve in moduli spaces is the image of a non-constant holomorphic map from a hyperbolic surface $B$ of type $(g,n)$ to the moduli space $\mathcal{M}_h$ of closed Riemann surfaces of genus $h$. We show that, when all peripheral monodromies are of infinite order, the holomorphic map is a quasi-isometric immersion with parameters depending only on $g$, $n$, $h$ and the systole of $B$. When peripheral monodromies also satisfy an additional condition, we find a lift quasi-isometrically embedding a fundamental polygon of the hyperbolic surface $B$ into the Teichmüller space. We further improve the Parshin-Arakelov finiteness theorem, by proving that there are only finitely many monodromy homomorphisms induced by holomorphic curves of type $(g,n)$ in $\mathcal{M}_h$ where systole is bounded away from $0$, up to equivalence.
title Holomorphic Curves in Moduli Spaces Are Quasi-Isometrically Immersed
topic Geometric Topology
Metric Geometry
14 D 06, 30 F 60, 32 G 15, 32 S 50, 57 K 20, 57 K 40
url https://arxiv.org/abs/2401.09327