Abstract. In this note we extend some results on approximation of $2\pi $-periodic functions, given in [2]--[5], to the case of strong approximation by some means of Fourier series.

AMS Subject Classification (1991): 42A10, 42A24

Received November 9, 1992, and in revised form May 5, 1993. (Registered under 5545/2009.)