On Strong Summability of Jacobi-Fourier-
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Thomas Runst; Winfried Sickel
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Article
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1980
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John Wiley and Sons
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English
β 390 KB
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The paper deals with approximation properties of JAcoBI-FOURIER-expansions in dependence of smoothness properties of the treated functions. Such relations are wellknown for trigonometrical series, we refer to LEINDLER [6], [7], OSKOLKOV [9], SCHMEIS-SER and SICKEL [ll]. In the same way as in the pa