Characterizations of function spaces on the sphere using frames
| dc.creator | Dai, Feng | |
| dc.date | 2005-10-04 | |
| dc.date.accessioned | 2026-07-07T06:21:08Z | |
| dc.date.available | 2026-07-07T06:21:08Z | |
| dc.description | In this paper we introduce a polynomial frame on the unit sphere $\sph$ of $\mathbb{R}^d$, for which every distribution has a wavelet-type decomposition. More importantly, we prove that many function spaces on the sphere $\sph$, such as $L^p$, $H^p$ and Besov spaces, can be characterized in terms of the coefficients in the wavelet decompositions, as in the usual Euclidean case $\mathbb{R}^d$. We also study a related nonlinear $m$-term approximation problem on $\sph$. In particular, we prove both a Jackson--type inequality and a Bernstein--type inequality associated to wavelet decompositions, which extend the corresponding results obtained by R. A. DeVore, B. Jawerth and V. Popov (``Compression of wavelet decompositions'', {\it Amer. J. Math.} {\bf 114} (1992), no. 4, 737--785). | |
| dc.description | 23 pages | |
| dc.identifier | https://arxiv.org/abs/math/0510084 | |
| dc.identifier | http://arxiv.org/abs/math/0510084 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/95506 | |
| dc.subject | Classical Analysis and ODEs | |
| dc.subject | 41A63 | |
| dc.title | Characterizations of function spaces on the sphere using frames | |
| dc.type | text |