The measure of noncompactness of Sobolev embeddings (Q1333089)

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scientific article; zbMATH DE number 638265
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The measure of noncompactness of Sobolev embeddings
scientific article; zbMATH DE number 638265

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    The measure of noncompactness of Sobolev embeddings (English)
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    17 October 1994
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    The author gives new formulas for the upper \(q\)-norm of the embedding \(I: W^ k_ p(Q)\to L_ q(Q)\) \((Q\subset \mathbb{R}^ n)\). She also proves necessary and sufficient conditions for a bounded linear operator to be semi-Fredholm.
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    bounded linear operator
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    semi-Fredholm
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