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Necessary and sufficient condition for compactness of the embedding operator

A. G. Ramm
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Abstract

An improvement of the author's result, proved in 1961, concerning necessary and sufficient conditions for the compactness of an imbedding operator is given.

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A. G. Ramm. 2005-09-19. Necessary and sufficient condition for compactness of the embedding operator. https://arxiv.org/abs/math/0509435

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