Comptes Rendus
Mathematical Analysis
A new characterization of Sobolev spaces
[Une nouvelle caractérisation des espaces de Sobolev]
Comptes Rendus. Mathématique, Volume 343 (2006) no. 2, pp. 75-80.

Notre résultat principal est le suivant : Soit une fonction gLp(RN), 1<p<+, telle que

supnNRNRN|g(x)g(y)|>δnδnp|xy|N+pdxdy<+,
(δn)nN est une suite arbitraire positive telle que limnδn=0. Alors gW1,p(RN).

Cela étend un résultat de H.-M. Nguyen (2006).

Our main result is the following: Let gLp(RN), 1<p<+, be such that

supnNRNRN|g(x)g(y)|>δnδnp|xy|N+pdxdy<+,
for some arbitrary sequence of positive numbers (δn)nN with limnδn=0. Then gW1,p(RN).

This extends a result from H.-M. Nguyen (2006).

Reçu le :
Publié le :
DOI : 10.1016/j.crma.2006.05.021
Jean Bourgain 1 ; Hoai-Minh Nguyen 2

1 Institute for Advanced Study, Olden Lane, Princeton, NJ 08540, USA
2 Laboratoire Jacques-Louis Lions, université Pierre et Marie Curie, 4, place Jussieu, 75252 Paris cedex 05, France
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     title = {A new characterization of {Sobolev} spaces},
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Jean Bourgain; Hoai-Minh Nguyen. A new characterization of Sobolev spaces. Comptes Rendus. Mathématique, Volume 343 (2006) no. 2, pp. 75-80. doi : 10.1016/j.crma.2006.05.021. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2006.05.021/

[1] R.A. Adams Sobolev Spaces, Academic Press, New York, 1975

[2] H. Brezis Analyse Fonctionnelle. Théorie et applications, Mathématiques appliquées pour la maîtrise, Dunod, 2002

[3] J. Bourgain; H. Brezis; P. Mironescu Another look at Sobolev spaces (J.L. Menaldi; E. Rofman; A. Sulem, eds.), Optimal Control and Partial Differential Equations, A Volume in Honour of A. Bensoussan's 60th Birthday, IOS Press, 2001, pp. 439-455

[4] L. Evans; R.F. Gariepy Measure Theory and Fine Properties of Functions, Studies in Advanced Mathematics, CRC Press, 1992

[5] H.M. Nguyen Some new characterizations of Sobolev spaces, J. Funct. Anal., Volume 237 (2006), pp. 689-720

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