| HAL : hal-00463842, version 1 |
| arXiv : 1003.5174 |
| Fiche détaillée | Récupérer au format |
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| Variations of Hausdorff Dimension in the Exponential Family |
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| Guillaume Havard 1, 2Mariusz Urbanski 3 |
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| (2008) |
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| In this paper we deal with the following family of exponential maps $(f_\lambda:z\mapsto \lambda(e^z-1))_{\lambda\in [1,+\infty)}$. Denoting $d(\lambda)$ the hyperbolic dimension of $f_\lambda$. It is known that the function $\lambda\mapsto d(\lambda)$ is real analytic in $(1,+\infty)$, and that it is continuous in $[1,+\infty)$. In this paper we prove that this map is C$^1$ on $[1,+\infty)$, with $d'(1^+)=0$. Moreover, depending on the value of $d(1)$, we give estimates of the speed of convergence towards $0$. |
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| 1 : | Mathématiques - Analyse, Probabilités, Modélisation - Orléans (MAPMO) |
| Université d'Orléans – CNRS : UMR7349 | |
| 2 : | Laboratoire de Mathématiques |
| CNRS : UMR6620 – Université Blaise Pascal - Clermont-Ferrand II | |
| 3 : | Department of Mathematics |
| Department of Mathematics – University of North Texas | |
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| Domaine | : | Mathématiques/Systèmes dynamiques |
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| Hausdorff dimension – Julia set – exponential family – parabolic points – thermodynamic formalism – conformal measures. |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00463842, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00463842 | |
| oai:hal.archives-ouvertes.fr:hal-00463842 | |
| Contributeur : Guillaume Havard | |
| Soumis le : Lundi 15 Mars 2010, 12:09:18 | |
| Dernière modification le : Vendredi 26 Mars 2010, 17:06:46 | |