2021
DOI: 10.48550/arxiv.2103.08240
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Some rigidity results for Sobolev inequalities and related PDEs on Cartan-Hadamard manifolds

Matteo Muratori,
Nicola Soave

Abstract: The Cartan-Hadamard conjecture states that, on every n-dimensional Cartan-Hadamard manifold M n , the isoperimetric inequality holds with Euclidean optimal constant, and any set attaining equality is necessarily isometric to a Euclidean ball. This conjecture was settled, with positive answer, for n ≤ 4. It was also shown that its validity in dimension n ensures that every p-Sobolev inequality (1 < p < n) holds on M n with Euclidean optimal constant. In this paper we address the problem of classifying all Carta… Show more

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