No 2 (1969)

DOI: https://doi.org/10.15421/24690002

Published: online 10.07.2021, print 14.07.1969

Table of Contents

Preamble
 
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1-2

Articles

On the best approximation of two-variable functions of class $$$Z_2$$$ by some linear operators
V.P. Bugaets
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3-6
Congruences of disks of constant curvature
M.L. Vydra, E.F. Lishchinskii
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6-10
To construction of Green matrices of edge problems of theory of flat hulls with cyclic periodicity
S.P. Gavelia
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10-13
Some iteration formulae of inversion of linear operations
L.I. Dubovik
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13-16
Some analogues between iterative processes and difference schemes
O.V. Zenkin
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16-20
To synthesis of optimizing digital-analog device by dynamic programming method in continuously-discrete form
M.M. Ivakhnenko, A.A. Zlatkin
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20-26
Strong summability of differentiated conjugate double Fourier series
Ye.M. Kilberg
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27-30
On convergence of trigonometric polynomials of the best mean-square approximation
Ye.I. Kostenko
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31-36
On convergence of interpolation sums in strong sense
V.V. Lipovik
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36-41
On convergence of some iterative processes
N.P. Lisikhina
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42-48
On interrelation between some methods of series summation
N.S. Novikova
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49-52
On realization of generalized separated differences in vector spaces
V.A. Ogneva, V.M. Chernyshenko
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53-56
On the best approximation of multivariable function by means of step functions
N.D. Ryshchenko
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56-59
On conditions of convergence of some double infinite products
K.M. Slepenchuk
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59-62
Some questions of theory of functional Gamma transformation
A.A. Stempkovskaia
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62-65
On tangent iteration formulae
V.M. Chernyshenko, Ye.I. Riabchenko
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66-69
On one method of approximation of continuous periodic functions by trigonometric polynomials
N.Ya. Yatsenko
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69-72
Approximate solution of integral-differential equations by generalized method of moments
D.B. Topolianskii, V.K. Zhurakova
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72-76
On one generalization of cut surfaces
B.S. Vakarchuk, P.T. Stepanenko
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77-81
Estimate of error of cubature formula for the class of differentiable $$$2\pi$$$-periodic functions of two variables
V.M. Alkhimova
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81-85