
This paper is a continuation of an earlier one [Part I, Acta Math. Hung. 55, 149-160 (1990; Zbl 0781.42006)] wherein the authors studied various modes of convergence of the Fourier partial sums \(\{s_ n f\}^ \infty_{n=0}\) of a continuous \(2\pi\)-periodic function and showed that the natural spaces generated by these modes are Banach spaces under several equivalent norms. In this paper, similar results are obtained for the space \(A^ \lambda\) [resp. \(S^ \lambda\)]\(=\{f\in L^ 1: \{s_ n f\}\) is absolutely convergent [resp. strongly convergent] of index \(\lambda\) a.e. to \(f\)\} for \(1\leq \lambda\).
Banach spaces, equivalent norms, Banach spaces of continuous, differentiable or analytic functions, strongly convergent Fourier series, absolutely and strongly convergent Fourier series, Convergence and absolute convergence of Fourier and trigonometric series, Fourier coefficients, absolutely convergent Fourier series, Cesàro-1 series
Banach spaces, equivalent norms, Banach spaces of continuous, differentiable or analytic functions, strongly convergent Fourier series, absolutely and strongly convergent Fourier series, Convergence and absolute convergence of Fourier and trigonometric series, Fourier coefficients, absolutely convergent Fourier series, Cesàro-1 series
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