Direct and inverse theorems in approximation theory for periodic functions in S.B. Stechkin’s papers and the development of these theorems V. I. Ivanov OriginalPaper 18 June 2011 Pages: 1 - 13
On the growth rate of arbitrary sequences of double rectangular Fourier sums N. Yu. Antonov OriginalPaper 18 June 2011 Pages: 14 - 20
Sharp inequalities for trigonometric polynomials with respect to integral functionals V. V. Arestov OriginalPaper 18 June 2011 Pages: 21 - 36
On a result by geronimus A. G. BabenkoYu. V. KryakinV. A. Yudin OriginalPaper 18 June 2011 Pages: 37 - 48
Some properties of Jacobi polynomials orthogonal on a circle V. M. Badkov OriginalPaper 18 June 2011 Pages: 49 - 58
L-Approximation of a linear combination of the poisson kernel and its conjugate kernel by trigonometric polynomials N. A. Baraboshkina OriginalPaper 18 June 2011 Pages: 59 - 67
An object and a group of observers in a normed space V. I. Berdyshev OriginalPaper 18 June 2011 Pages: 68 - 73
Integral approximation of the characteristic function of a spherical cap by algebraic polynomials M. V. Deikalova OriginalPaper 18 June 2011 Pages: 74 - 85
Dunkl’s theory and Jackson’s theorem in the space L 2(ℝ d ) with power weight A. V. IvanovV. I. Ivanov OriginalPaper 18 June 2011 Pages: 86 - 98
Almost everywhere divergence of lacunary subsequences of partial sums of fourier series S. V. Konyagin OriginalPaper 18 June 2011 Pages: 99 - 106
On the Jackson-Stechkin inequality for algebraic polynomials A. V. Mironenko OriginalPaper 18 June 2011 Pages: 116 - 123
New generalization of orthogonal wavelet bases E. A. Pleshcheva OriginalPaper 18 June 2011 Pages: 124 - 132
Approximation by local ℒ-splines that are exact on subspaces of the kernel of a differential operator E. V. StrelkovaV. T. Shevaldin OriginalPaper 18 June 2011 Pages: 133 - 141
Harmonic wavelets in boundary value problems for harmonic and biharmonic functions Yu. N. SubbotinN. I. Chernykh OriginalPaper 18 June 2011 Pages: 142 - 159
On the rate of approximation of functions in Lipschitz norms S. A. Telyakovskii OriginalPaper 18 June 2011 Pages: 160 - 162
Jackson inequality in L 2(ℝ N ) with generalized modulus of continuity S. N. Vasil’ev OriginalPaper 18 June 2011 Pages: 163 - 170
The class of solenoidal planar-helical vector fields V. P. VereshchaginYu. N. SubbotinN. I. Chernykh OriginalPaper 18 June 2011 Pages: 171 - 187
Estimates for sums of moduli of blocks in trigonometric Fourier series V. P. Zastavnyi OriginalPaper 18 June 2011 Pages: 190 - 204
