On the degree of convergence of Borel and Euler means of trigonometric series
On the degree of convergence of Borel and Euler means for double Fourier series of functions of bounded variation in Hardy sense
For real functions of bounded variation in the Hardy sense, -periodic in each variable, the rates of pointwise convergence of the Borel and Euler means of their Fourier series are estimated.
Sur les fonctions vectorielles approximativement continues
On the rate of strong summability of double Fourier series
Estimates of the strong means of Marcinkiewicz type with the Cesaro means of negative order in one of the variables instead of square partial sums are obtained by characteristics constructed on the basis of moduli of continuity.
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