Hyperbolic Manifolds and Discrete Groups pp 397-401 | Cite as

# Hyperbolization of Fibrations

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## Abstract

Let
That extends the length function for the closed geodesics in

*S*be a Riemann surface of finite hyperbolic type, \(\Gamma = \pi_1(S)\). We assume that \(\Gamma\) is embedded in \(PSL(2, \mathbb{R})\) as Fuchsian group so that \(S = \mathbb{H}^{2}/\Gamma\). Recall that \(\bar{S} = (\widehat{\mathbb{C}} - {\rm cl}(\mathbb{H}^2))/\Gamma\) has the same marked hyperbolic structure as*S*and the opposite orientation. These surfaces are identified via projection of the complex conjugation \(Z \mapsto \bar{Z}\) to a map \(S \rightarrow \bar{S}\). There is a continuous length function$$\ell : \mathcal{T}(S) \times \mathcal{M}\mathcal{L}(S) \rightarrow \mathbb{R}$$

*S*; see Section 11.16.Suppose that
Is a sequence and \((\lambda^+, \lambda^-)\) is a pair of elements in \(\mathcal{M}\mathcal{L}(S) \times \mathcal{M}\mathcal{L}(\bar{S})\) such that there is a number \(L < \infty\) such that for all \(n \geq 0\),
Consider the sequence \([\rho_n] \epsilon \mathcal{T}(\Gamma)\) that corresponds to \((\Psi_{n}^{+}, \Psi_{n}^{-})\) under that Bers isomorphism.

$$(\Psi_{n}^{+}, \Psi_{n}^{-} \epsilon \mathcal{T}(S) \times \mathcal{T}(\bar{S})$$

$$\ell(\Psi_{n}^{\pm}, \lambda^{\pm}) \leq L.$$

## Keywords

Riemann Surface Conjugacy Class Length Function Closed Geodesic Fuchsian Group
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Birkhäuser Boston 2009