Borup, Lasse

Nielsen, Morten

English

Nonlinear approximation in α-modulation spacesThe α-modulation spaces are a family of spaces that contain the Besov andmodulation spaces as special cases. In this paper we prove that brushlet bases canbe constructed to form unconditional end even greedy bases for the α-modulationspaces. We study m-term nonlinear approximation with brushlet bases, and givecomplete characterizations of the associated approximation spaces in terms of α-modulation spaces.1

Nonlinear approximation in α-modulation spaces

https://vbn.aau.dk/files/112966/abstractfil2.pdf

Nonlinear approximation in α-modulation spaces

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