About relationship between summability of almost periodic functions and Fouriers coefficients
Vladikavkazskij matematičeskij žurnal, Tome 16 (2014) no. 3, pp. 47-54
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We generalize Paley's theorem for Bezicovich and Stepanov almost periodic functions on arbitrary trigonometric system. It is proved that for any trigonometric series under some conditions there exists an almost-periodic function which the given series is its Fourier series.
[1] Bari N. K., Trigonometricheskie ryady, Fizmatgiz, M., 1961, 936 pp. | MR
[2] Paley R., “Some theorems on orthogonal functions”, Stud. Math., s1-7:3 (1932), 205–208 | MR | Zbl
[3] Levitan B. M., Pochti-periodicheskie funktsii, Gostekhizdat, M., 1947, 396 pp.
[4] Timan M. F., “Orthonormal systems satisfying an inequality of S. M. Nikolskii”, Analysis Math., 4 (1978), 75–82 | DOI | MR | Zbl
[5] Khardi G. G., Littlvud D. E., Polia G., Neravenstva, Izd-vo inostr. lit-ry, M., 1948, 456 pp.