Vakarchuk, S. B. (2004). Exact constant in an inequality of Jackson type for L2-approximation on the line and exact values of mean widths of functional classes. East Journal on Approximations, 10(1), 27–39.
Citations: 41
Year: 2004
Vakarchuk, S. B., & Zabutnaya, V. I. (2016). Inequalities between best polynomial approximations and some smoothness characteristics in the space L2 and widths of classes of functions. Mathematical Notes, 99(1), 222–242.
Citations: 39
Year: 2016
Vakarchuk, S. B., & Shvachko, A. V. (2013). On best approximation in the mean by algebraic polynomials with weight and exact values of widths of function classes. Ukrainian Mathematical Journal, 65(12), 1604–1621.
Citations: 39
Year: 2013
Vakarchuk, S. B. (2002). Exact values of widths of classes of analytic functions in the disk and best linear approximation methods. Mathematical Notes, 72(5), 665–669.
Citations: 39
Year: 2002
Vakarchuk, S. B. (2001). On best polynomial approximations in L2 of certain classes of 2π-periodic functions and exact values of their n-widths. Mathematical Notes, 70(3), 300–310.
Citations: 39
Year: 2001