Inégalité de Sobolev et volume asymptotique

Details Inégalité de Sobolev et volume asymptotique Inégalité de Sobolev et volume asymptotique

2011-07-29

arxiv.org/abs/1107.5887v1

Mathematics

Differential Geometry

Scientific paper

A result of M. Ledoux is that a complete Riemannian manifold with non negative Ricci curvature satisfying the Euclidean Sobolev inequality is the Euclidean space. We present a shortcut of the proof. We also give a refinement of a result of B-L. Chen et X-P. Zhu about locally conformally flat manifolds with non negative Ricci curvature. Eventually, we discuss Ledoux's result when the hypothesis on the Ricci curvature is weakened on a hypothesis on the scalar curvature.

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