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相关论文: The earthquake metric on Teichm{\"u}ller space

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In his paper Minimal stretch maps between hyperbolic surfaces, William Thurston defined a norm on the tangent space to Teichm{\"u}ller space of a hyperbolic surface, which he called the earthquake norm. This norm is obtained by assigning a…

复变函数 · 数学 2026-03-24 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

We highlight several analogies between the Finsler (infinitesimal) properties of Teichm\"uller's metric and Thurston's asymmetric metric on Teichm\"uller space. Thurston defined his asymmetric metric in analogy with Teichm\"ullers' metric,…

几何拓扑 · 数学 2011-11-18 Athanase Papadopoulos , Weixu Su

Thurston introduced in his seminal work an asymmetric metric on Teichm\"uller space by the ratio of simple closed curve length. In this paper, we generalize the idea and define an asymmetric metric on the space of unit-area flat metrics…

几何拓扑 · 数学 2025-10-21 Jiajun Shi

In this paper, we introduce an asymmetric metric on the space of marked Euclidean triangles, and we prove several properties of this metric, including two equivalent definitions of this metric, one of them comparing ratios of functions of…

几何拓扑 · 数学 2025-04-25 Ismail Saglam , Ken'Ichi Ohshika , Athanase Papadopoulos

In [Engquist et al., Commun. Math. Sci., 14(2016)], the Wasserstein metric was successfully introduced to the full waveform inversion. We apply this method to the earthquake location problem. For this problem, the seismic stations are far…

数值分析 · 数学 2018-08-01 Jing Chen , Yifan Chen , Hao Wu , Dinghui Yang

The Thurston metric on Teichmuller space, first introduced by W. P. Thurston is an asymmetric metric on Teichmuller space defined by $d_{Th}(X,Y) = \frac12 log\sup_{\alpha} \frac{l_{\alpha}(Y)}{l_{\alpha}(X)}$. This metric is geodesic, but…

几何拓扑 · 数学 2023-11-08 Assaf Bar-Natan

This is the author's Ph.D. thesis, submitted to the University of Leipzig. It deals with the $L^2$ Riemannian metric on the manifold of all smooth Riemannian metrics on a fixed closed, finite-dimensional manifold. The main body of the…

微分几何 · 数学 2009-04-02 Brian Clarke

The present paper is composed of two parts. In the first one we define two pseudo-metrics $L_F$ and $K_F$ on the Teichmu\"uller space of semi-translation surfaces $\mathcal{TQ}_g(\underline k,\epsilon)$, which are the symmetric counterparts…

微分几何 · 数学 2018-08-30 Federico Wolenski

In this paper, we answer some natural questions on symmetrisation and more general combinations of Finsler metrics, with a view towards applications to Funk and Hilbert geometries and to metrics on Teichm{\"u}ller spaces. For a general…

微分几何 · 数学 2025-06-05 Ismail Saglam , Ken'Ichi Ohshika , Athanase Papadopoulos

In this paper, we show that the analogue of Thurston's asymmetric metric on the Teichm{\"u}ller space of flat structures on the torus is weak Finsler and we give a geometric description of its unit sphere at each point in the tangent space…

复变函数 · 数学 2021-09-07 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

We give a description of the completion of the manifold of all smooth Riemannian metrics on a fixed smooth, closed, finite-dimensional, orientable manifold with respect to a natural metric called the $L^2$ metric. The primary motivation for…

微分几何 · 数学 2009-04-02 Brian Clarke

Using the identification of the symmetric space $\mathrm{SL}(n,\mathbb{R})/\mathrm{SO}(n)$ with the Teichm\"uller space of flat $n$-tori of unit volume, we explore several metrics and compactifications of these spaces, drawing inspiration…

微分几何 · 数学 2019-03-27 Mark Greenfield , Lizhen Ji

In this paper, we introduce a new asymmetric weak metric on the Teichm{\"u}ller space of a closed orientable surface with (possibly empty) punctures.This new metric, which we call the Teichm{\"u}ller-Randers metric, is an asymmetric…

复变函数 · 数学 2022-11-30 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos

On a convex body in a Euclidean space, we introduce a new variational formulation for its Funk metric, a Finsler metric compatible with the tautological Finsler structure of the convex body. We generalize the metric on Teichmuller spaces…

微分几何 · 数学 2012-06-12 Sumio Yamada

Let $X_0$ be a complete hyperbolic surface of infinite type that has a geodesic pants decomposition with cuff lengths bounded above. The length spectrum Teichm\"uller space $T_{ls}(X_0)$ consists of homotopy classes of hyperbolic metrics on…

几何拓扑 · 数学 2013-07-05 Dragomir Šarić

In this article, we extend Thurston's asymmetric metric and the associated Finsler norm, originally defined for Teichm\"uller space, to the setting of Margulis spacetimes. We also establish several convexity properties of both the…

几何拓扑 · 数学 2025-12-10 Krishnendu Gongopadhyay , Neelanjan Mondal

We provide a good dynamical framework allowing to generalize Thurston's asymmetric metric and the associated Finsler norm from Teichm\"uller space to large classes of Anosov representations. In many cases, including the space of Hitchin…

微分几何 · 数学 2024-05-08 León Carvajales , Xian Dai , Beatrice Pozzetti , Anna Wienhard

In our previous work [Chen el al., J. Comput. Phys., 373(2018)], the quadratic Wasserstein metric is successfully applied to the earthquake location problem. The actual earthquake hypocenter can be accurately recovered starting from initial…

数值分析 · 数学 2018-12-04 D. T. Zhou , J. Chen , H. Wu , D. H. Yang , L. Y. Qiu

We undertake a systematic study of the infinitesimal geometry of the Thurston metric, showing that the topology, convex geometry and metric geometry of the tangent and cotangent spheres based at any marked hyperbolic surface representing a…

几何拓扑 · 数学 2024-01-10 Yi Huang , Ken'Ichi Ohshika , Athanase Papadopoulos

We continue the study of the analogue of Thurston's metric on the Teichm{\"u}ller space of Euclidean triangle which was started by Saglam and Papadopoulos in [1].By direct calculation, we give explicit expressions of the distance function…

几何拓扑 · 数学 2023-08-28 Hideki Miyachi , Ken'Ichi Ohshika , Athanase Papadopoulos
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