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Nouvelles observations sur le système orthogonal de polynomes d'Hermite. - MaRDI portal

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Nouvelles observations sur le système orthogonal de polynomes d'Hermite. (Q572609)

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scientific article; zbMATH DE number 2556262
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English
Nouvelles observations sur le système orthogonal de polynomes d'Hermite.
scientific article; zbMATH DE number 2556262

    Statements

    Nouvelles observations sur le système orthogonal de polynomes d'Hermite. (English)
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    1931
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    Verf. ergänzt in kurzen Bemerkungen die vorstehend besprochene Arbeit, z. B. zeigt er durch ein Gegenbeispiel, daß im Falle \[ f(x)=O\left(|x|^{2\alpha}\exp\frac{x^2}2\right) \quad (\alpha \geqq 0) \] die Reihe nicht \((C,\delta)\)-summierbar für \(\delta<\alpha\), dagegen stets für \(\delta > \alpha\) ist. Er fügt Einiges über das \textit{Gibbs}sche Phänomen sowie Ungleichungen für die arithmetischen Mittel hinzu. (IV 6 A.)
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