On the absolute convergence of multiple fourier series

被引:10
|
作者
Moricz, Ferenc [1 ]
Veres, Antal [1 ]
机构
[1] Univ Szeged, Bolyai Inst, H-6720 Szeged, Hungary
关键词
multiple Fourier series; absolute convergence; multiplicative moduli of continuity; functions of bounded variation in the sense of Vitali and of Hardy and Krause; absolutely continuous functions of several variables; multivariate versions of Bernstein's theorem and Zygmund's theorem;
D O I
10.1007/s10474-007-6100-z
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let f : R-N C be a periodic function with period 2 pi in each variable. We prove sufficient conditions for the absolute convergence of the multiple Fourier series of f in terms of moduli of continuity, of bounded variation in the sense of Vitali or Hardy and Krause, and of the mixed partial derivative ill case f is an absolutely continuous function. Our results extend the classical theorems of Bernstein and Zygmund from single to multiple Fourier series.
引用
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页码:275 / 292
页数:18
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