Affine Density in Wavelet Analysis
Autor: | Kutyniok, Gitta |
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EAN: | 9783540729167 |
Sachgruppe: | Mathematik |
Sprache: | Englisch |
Seitenzahl: | 156 |
Produktart: | Kartoniert / Broschiert |
Veröffentlichungsdatum: | 12.07.2007 |
Schlagworte: | Wavelet |
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In wavelet analysis, irregular wavelet frames have recently come to the forefront of current research due to questions concerning the robustness and stability of wavelet algorithms. A major difficulty in the study of these systems is the highly sensitive interplay between geometric properties of a sequence of time-scale indices and frame properties of the associated wavelet systems. This volume provides the first thorough and comprehensive treatment of irregular wavelet frames by introducing and employing a new notion of affine density as a highly effective tool for examining the geometry of sequences of time-scale indices. Many of the results are new and published for the first time. Topics include: qualitative and quantitative density conditions for existence of irregular wavelet frames, non-existence of irregular co-affine frames, the Nyquist phenomenon for wavelet systems, and approximation properties of irregular wavelet frames.