Abstract
We construct an orthonormal basis for the family of bi-variate a-modulation spaces. The construction is based on local trigonometric bases, and the basis elements are closely related to so-called brushlets. As an application, we show that m-term nonlinear approximation with the system in an a-modulation space can be completely characterized.
| Originalsprog | Engelsk |
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| Udgivelsessted | Aalborg |
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| Forlag | Department of Mathematical Sciences, Aalborg University |
| Antal sider | 17 |
| Status | Udgivet - 2008 |
| Navn | Research Report Series |
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| Nummer | R-2008-03 |
| ISSN | 1399-2503 |