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Function spaces of generalised smoothness

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de Moura S.

Instytut Matematyczny Polskiej Akademii Nauk

We study spaces of generalised smoothness of Besov and Triebel-Lizorkin type. In particular, we get characterisations by local means, atomic and subatomic representations. These results are applied to estimate the entropy numbers of compact embeddings between function spaces on fractals. Due to Carl's inequality this is useful in the study of the behaviour of eigenvalues in problems which correspond to the vibrations of a drum, the whole mass of which is concentrated on a fractal subset of the drum.

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1 de Moura S.

1 2001

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Function spaces of generalised smoothness