A. Igenberlina, Zh. Keulimzhayeva
THE DYADIC INTEGRAL MODULE OF CONTINUITY AND BEST APPROXIMATIONS OF A FUNCTION OF MULTIPLE VARIABLES BY WALSH POLYNOMIALS
24-31
A.A. Jumabayeva , A.E. Zhetpisbayeva
THE ORDER OF THE BEST APPROXIMATION OF FUNCTIONS IN LEBESQUE SPACE
43-51