We study isometric embeddings of C-2 Riemannian manifolds in the Euclidean space and we establish that the Holder space C-1,C-1/2 is critical in a suitable sense: in particular we prove that for alpha > 1/2 the Levi-Civita connection of any isometric immersion is induced by the Euclidean connection, whereas for any alpha < 1/2 we construct Cr-1,Cr-alpha isometric embeddings of portions of the standard 2-dimensional sphere for which such property fails. (C) 2020 Elsevier Inc. All rights reserved

C1,α isometric embeddings of polar caps

De Lellis, C.;
2020-01-01

Abstract

We study isometric embeddings of C-2 Riemannian manifolds in the Euclidean space and we establish that the Holder space C-1,C-1/2 is critical in a suitable sense: in particular we prove that for alpha > 1/2 the Levi-Civita connection of any isometric immersion is induced by the Euclidean connection, whereas for any alpha < 1/2 we construct Cr-1,Cr-alpha isometric embeddings of portions of the standard 2-dimensional sphere for which such property fails. (C) 2020 Elsevier Inc. All rights reserved
2020
Isometric Embedding, Convex Integration, Nash-Kuiper
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/39533
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