| HAL : hal-00516633, version 2 |
| arXiv : 1009.2010 |
| Fiche détaillée | Récupérer au format |
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| Versions disponibles : | v1 (10-09-2010) | v2 (25-11-2010) |
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| Hypersurfaces with small extrinsic radius or large $\lambda_1$ in Euclidean spaces |
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| Erwann Aubry 1Jean-Francois Grosjean 2 |
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| (12/11/2010) |
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| We prove that hypersurfaces of $\R^{n+1}$ which are almost extremal for the Reilly inequality on $\lambda_1$ and have $L^p$-bounded mean curvature ($p>n$) are Hausdorff close to a sphere, have almost constant mean curvature and have a spectrum which asymptotically contains the spectrum of the sphere. We prove the same result for the Hasanis-Koutroufiotis inequality on extrinsic radius. We also prove that when a supplementary $L^q$ bound on the second fundamental is assumed, the almost extremal manifolds are Lipschitz close to a sphere when $q>n$, but not necessarily diffeomorphic to a sphere when $q\leqslant n$. |
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| 1 : | Laboratoire Jean Alexandre Dieudonné (JAD) |
| CNRS : UMR6621 – Université Nice Sophia Antipolis [UNS] | |
| 2 : | Institut Elie Cartan Nancy (IECN) |
| CNRS : UMR7502 – INRIA – Université Henri Poincaré - Nancy I – Université Nancy II – Institut National Polytechnique de Lorraine (INPL) | |
| 3 : | Laboratoire d'Analyse et de Mathématiques Appliquées (LAMA) |
| Université Paris-Est Marne-la-Vallée (UPEMLV) – Université Paris-Est Créteil Val-de-Marne (UPEC) – CNRS : UMR8050 – Fédération de Recherche Bézout | |
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| Domaine | : | Mathématiques/Géométrie différentielle |
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| Mean curvature – Reilly inequality – Laplacian – Spectrum – pinching results – hypersurfaces |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00516633, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00516633 | |
| oai:hal.archives-ouvertes.fr:hal-00516633 | |
| Contributeur : Jean-Francois Grosjean | |
| Soumis le : Jeudi 25 Novembre 2010, 16:29:43 | |
| Dernière modification le : Jeudi 25 Novembre 2010, 21:06:26 | |