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Article Dans Une Revue Annales de la Faculté des Sciences de Toulouse. Mathématiques. Année : 2017

Interpolation inequalities on the sphere: linear vs. nonlinear flows

Résumé

This paper is devoted to sharp interpolation inequalities on the sphere and their proof using flows. The method explains some rigidity results and proves uniqueness in related semilinear elliptic equations. Nonlinear flows allow to cover the interval of exponents ranging from Poincaré to Sobolev inequality, while an intriguing limitation (an upper bound on the exponent) appears in the carré du champ method based on the heat flow. We investigate this limitation, describe a counter-example for exponents which are above the bound, and obtain improvements below.
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Dates et versions

hal-01206975 , version 1 (29-09-2015)
hal-01206975 , version 2 (23-10-2015)

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Jean Dolbeault, Maria J. Esteban, Michael Loss. Interpolation inequalities on the sphere: linear vs. nonlinear flows. Annales de la Faculté des Sciences de Toulouse. Mathématiques., 2017, 26 (2), pp.351-379. ⟨hal-01206975v2⟩
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