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In mathematics, the Fejér kernel is a summability kernel used to express the effect of Cesàro summation on Fourier series. It is a non-negative kernel, giving rise to an approximate identity. It is named after the Hungarian mathematician Lipót Fejér (1880–1959).
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kernel fejér displaystyle fourier convolution used cesàro definition also definitions dirichlet follows geq since summability summation series identity mathematics hungarian
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Fejér kernel | is a | summability kernel used to express the effect of Cesàro summation on Fourier series | 0.90 | text |
| Fejér kernel | is a | positive summability kernel | 0.90 | text |
| Fejér kernel | has application | The Fejér | 0.60 | section |
| Fejér kernel | has application | Fourier | 0.60 | section |
| Fejér kernel | related to Definition | The Fejér | 0.60 | section |
| Fejér kernel | related to Definition | Three | 0.60 | section |
| Fejér kernel | related to Definition | The | 0.60 | section |
| Fejér kernel | related to Definition | Fejér | 0.60 | section |
| Fejér kernel | related to Definition | Dirichlet | 0.60 | section |
| Fejér kernel | related to Properties | The Fejér | 0.60 | section |
| Fejér kernel | related to Properties | An | 0.60 | section |
| Fejér kernel | related to Properties | Fejér | 0.60 | section |
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