On the Best Polynomial Approximations of 2-Periodic Functions and Exact Values of n -Widths of Functional Classes in the Space L 2

By Vakarchuk S.B.  

Ukrainian Mathematical Journal, Vol. 54, Iss. 12, 2002-12 ,pp. : 1943-1957

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On the order of relative approximation of classes of differentiable periodic functions by splines

By Babenko V.   Parfinovich N.V.  

Ukrainian Mathematical Journal, Vol. 62, Iss. 2, 2010-09 ,pp. : 163-174

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Best Approximations and Widths of Classes of Convolutions of Periodic Functions of High Smoothness

By Serdyuk A.  

Ukrainian Mathematical Journal, Vol. 57, Iss. 7, 2005-07 ,pp. : 1120-1148

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Nonsymmetric approximations of classes of periodic functions by splines of defect 2 and Jackson-type inequalities

By Babenko V.   Parfinovich N.  

Ukrainian Mathematical Journal, Vol. 61, Iss. 11, 2009-11 ,pp. : 1695-1709

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Best Approximations and Kolmogorov and Trigonometric Widths of the Classes B p, Ω of Periodic Functions of Many Variables

By Stasyuk S.  

Ukrainian Mathematical Journal, Vol. 56, Iss. 11, 2004-11 ,pp. : 1849-1863

Springer Publishing Company

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