Points of strong summability of fourier series

We study strong means of deviations of partial sums of expansions of functionsf in systems of functions of polynomial type.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 46, No. 12, pp. 1655–1664, December, 1994.     

Multipliers for the absolute euler summability of fourier series

In this paper, the author has investigated necessary and sufficient conditions for the absolute Euler summability of the Fourier series with miltipliers. These conditions are weaker than those obtained earlier by some workers. It is further shown that the multipliers are best possible in certain sense.     

A note on the Valiron method of summability

Acta Mathematica Hungarica -     

Strong summability of fourier series on classes of periodic functions

Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 41, No. 3, pp. 354–360, March, 1989.     

A theorem on the absolute riesz summability of a fourier series at a point

The object of this paper is to improve the corresponding results due to R. Mohanty and T. Pati ([2], [6], [7]).     

Strong summability of fourier series on classes of (ψ, β)-differentiable functions

Translated from Matematicheskie Zametki, Vol. 44, No. 4, pp. 506–516, October, 1988.