The so-called Vilenkin systems and the Hardy spaces H 0p F 1 with respect to Vilenkin groups will be considered. We investigate certain means of the partial sums of Vilenkin᎐Fourier series. It will be shown that these means, as operators from H p to L p , are bounded.
Convergence for the regularized inversion of Fourier series
✍ Scribed by Umberto Amato; Italia De Feis
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 963 KB
- Volume
- 87
- Category
- Article
- ISSN
- 0377-0427
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✦ Synopsis
The problems of smoothing data through a transform in the Fourier domain and of retrieving a function from its Fourier coefficients are analyzed in the present paper. For both of them a solution, based on regularization tools, is known. Aim of the paper is to prove strong results of convergence of the regularized solution and optimality of the Generalized Cross Validation criterion for choosing the regularization parameter.
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