Abstract
The author’s recent attempt to generalize the problem of \(L^1\) convergence of trigonometric series to the non-periodic case is finalized here. It can now be said that any known condition which guarantees integrability of the Fourier transform of a function of bounded variation also leads to the \(L^1\) convergence of its partial integrals provided that a universal necessary and sufficient condition is added.
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Alexits, G.: Convergence Problems of Orthogonal Series. Akadémiai Kiadó, Budapest (1961)
Belinsky, E., Liflyand, E., Trigub, R.: The Banach algebra \(A^*\) and its properties. J. Fourier Anal. Appl. 3, 103–129 (1997)
Belov, A.S.: On conditions of the average convergence (Upper boundedness) of trigonometric series. J. Math. Sci. 155, 5–17 (2008)
Beurling, A.: On the spectral synthesis of bounded functions. Acta Math. 81, 225–238 (1949)
Borwein, D.: Linear functionals connected with strong Cesáro summability. J. Lond. Math. Soc. 40, 628–634 (1965)
Fomin, G.A.: A class of trigonometric series. Matem. Zametki 23, 213–222 (1978) (Russian). English transl. in Math. Notes 23, 117–123 (1978)
Garcia-Cuerva, J., Rubio de Francia, J.L.: Weighted Norm Inequalities and Related Topics. North-Holland, Amsterdam (1985)
Giang, D.V., Móricz, F.: On the \(L^1\)-convergence of Fourier transforms. J. Aust. Math. Soc. (Ser. A) 60, 405–420 (1996)
Iosevich, A., Liflyand, E.: Decay of the Fourier Transform: Analytic and Geometric Aspects. Birkhäuser, Basel (2014)
Johnson, R.L., Warner, C.R.: The convolution algebra \(H^1(R)\). J. Funct. Spaces Appl. 8, 167–179 (2010)
Liflyand, E.: Fourier transforms of functions from certain classes. Anal. Math. 19, 151–168 (1993)
Liflyand, E.: Fourier transforms on an amalgam type space. Monatsh. Math. 172, 345–355 (2013)
Liflyand, E.: Functions of Bounded Variation and their Fourier Transforms. Birkhäuser, Basel (2019)
Liflyand, E.: \(L^1\) convergence of Fourier transforms. Anal. Math. Phys. 11(2), Paper No. 91, 11 (2021)
Liflyand, E.: Harmonic Analysis on the Real Line: A Path in the Theory. Birkhäuser, Basel (2021)
Liflyand, E., Trigub, R.: Wiener algebras and trigonometric series in a coordinated fashion. Constr. Approx. 54, 185–206 (2021)
Okada, M., Sawano, Y.: Weighted Hankel transform and its applications to Fourier transform. J. Fourier Anal. Appl. 27, Paper No. 23 (2021)
Stein, E.M., Weiss, G.: Introduction to Fourier Analysis on Euclidean Spaces. Princeton Univ. Press, Princeton (1971)
Young, W.H.: On the Fourier series of bounded functions. Proc. Lond. Math. Soc. 2(12), 41–70 (1913)
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Liflyand, E. \(L^1\) Convergence of Fourier Transforms Revisited. Results Math 78, 1 (2023). https://doi.org/10.1007/s00025-022-01782-6
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DOI: https://doi.org/10.1007/s00025-022-01782-6