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CONVERGENCE OF MULTIPLE FOURIER-WALSH SERIES OF FUNCTIONS OF BOUNDED Λ-VARIATION

机译:有界Λ-变数的多个Fourier-Walsh级数函数的收敛性

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摘要

The article proves that if a summable function f(x,y) belongs to Waterman's class ΛBV([0,1]~2 ) for Λ ={ o ((n~(1/2))/(ln(n+1))~(1/2))}_(n=1)~∞ and is continuous at every point of some compact E, then the double Fourier— Walsh series of f(x, y) is uniformly u(K)—convergent on E.
机译:该文章证明,对于Λ= {o((n((1/2))/(ln(n + 1)),如果可加函数f(x,y)属于沃特曼类别ΛBV([0,1]〜2) ))〜(1/2))} _(n = 1)〜∞并在某个紧致E的每个点处连续,则双傅里叶— f(x,y)的沃尔什级数统一为u(K)-在E上收敛

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