Geodesic
The degree of approximation by Hausdorff means of a conjugate Fourier series
Annales Universitatis Mariae Curie-Skłodowska. Mathematica , Tome 70 (2016) no. 2.

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The purpose of this paper is to analyze the degree of approximation of a function f that is a conjugate of a function f belonging to the Lipschitz class by Hausdorff means of a conjugate series of the Fourier series.
Keywords: Hausdorff matrix, conjugate series of the Fourier series, degree of approximation 
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Kęska, Sergiusz. The degree of approximation by Hausdorff means of a conjugate Fourier series. Annales Universitatis Mariae Curie-Skłodowska. Mathematica , Tome 70 (2016) no. 2. http://geodesic.mathdoc.fr/item/AUM_2016_70_2_a6/

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