Nonlinear estimates for hypersurfaces in terms of their fundamental forms |
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Authors: | Maria Malin Cristinel Mardare |
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Institution: | 1. Department of Mathematics, University of Craiova, 200585 Craiova, Romania;2. Sorbonne Universités, Université Pierre-et-Marie-Curie, Laboratoire Jacques-Louis-Lions, 4, place Jussieu, 75005 Paris, France |
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Abstract: | A sufficiently regular hypersurface immersed in the -dimensional Euclidean space is determined up to a proper isometry of by its first and second fundamental forms. As a consequence, a sufficiently regular hypersurface with boundary, whose position and positively-oriented unit normal vectors are given on a non-empty portion of its boundary, is uniquely determined by its first and second fundamental forms. We establish here stronger versions of these uniqueness results by means of inequalities showing that an appropriate distance between two immersions from a domain ω of into is bounded by the -norm of the difference between matrix fields defined in terms of the first and second fundamental forms associated with each immersion. |
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