Harmonic analysis on Euclidean spaces Concept
Jackson kernel
Summary
The Jackson kernel is a nonnegative trigonometric polynomial, the normalised square of the Fejér kernel. Convolution with it gives trigonometric polynomials that approximate a continuous periodic function with error of order . It is the standard tool in the proof of Jackson's inequality.
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| Tag | 9MZFTX77CD |
|---|---|
| URI | m2://9MZFTX77CD |
| Kind | concept |
| Writing | W0 stub |
| MSC | 42A10, 41A25, 41A35 |
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