Mesures de Hausdorff de l'ensemble limite de groupes kleiniens g\'eom\'etriquement finis

Abstract

We prove here that the Poincar\'e exponent of a geometrically finite group od isometries of the 3-dimensionnal hyperbolic space coincides with the Hausdorff dimension of its limit set. We also compare the natural measures supported by this set: the Patterson measure and the Hausdorff and packing measures corresponding to the standart jauge.

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