Geodesic
Some properties of Fourier series of functions with bounded variation. II
Trudy Instituta matematiki i mehaniki, Function theory, Tome 11 (2005) no. 2, pp. 168-174 
S. A. Telyakovskii. Some properties of Fourier series of functions with bounded variation. II. Trudy Instituta matematiki i mehaniki, Function theory, Tome 11 (2005) no. 2, pp. 168-174. http://geodesic.mathdoc.fr/item/TIMM_2005_11_2_a11/
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

We investigate ways to divide the Fourier series of a function of bounded variation into blocks such that the sum of the series consisting of the absolute values of the blocks is square integrable on the period.

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