A function \(f\) with compactly supported Fourier transform can be approximated by a step function \(a\) which coincides with \(f\) at regularly spaced points \(s k, k \in \mathbb{Z}\). For suitable \(s\), the functions \(f\) and \(a\) have the same \(L^{2}\) norm. By modifying \(a\) so that its Fou
n-Term Approximation by Controllable Step Functions
β Scribed by Christian Richter
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 285 KB
- Volume
- 239-240
- Category
- Article
- ISSN
- 0025-584X
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