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Description of the lack of compactness for the Sobolev imbedding

Published online by Cambridge University Press:  15 August 2002

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Abstract

We prove that any bounded sequence in a Hilbert homogeneous Sobolev space has a subsequence which can be decomposed as analmost-orthogonal sum of a sequence going strongly to zero in the corresponding Lebesgue space, and of a superposition of termsobtained from fixed profiles by applying sequences of translations and dilations. This decomposition contains in particular the variousversions of the concentration-compactness principle.

Type
Research Article
Copyright
© EDP Sciences, SMAI, 1998

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