Vol 17 (2009)

DOI: https://doi.org/10.15421/24091701

Published: online 31.08.2009, print 08.09.2009

Table of Contents

Preamble
 
PDF (Українська)
1-2

Articles

Famous mathematician, outstanding person of XXI century
L.G. Bojtsun, T.I. Rybnikova
PDF (Русский)
3-9
Characterization of the best non-symmetric approximant in spaces with mixed integral metric
T.A. Agoshkova, V.M. Traktynska
PDF (Українська)
10-14
Theorem on width of ball in spaces of mappings
V.F. Babenko
PDF (Русский)
15-22
The best approximation of classes, defined by powers of self-adjoint operators acting in Hilbert space, by other classes
V.F. Babenko, R.O. Bilichenko
PDF (Русский)
23-30
On inequalities of Kolmogorov type for fractional Hadamard derivatives of functions defined on the half-line
V.F. Babenko, N.V. Parfinovich
PDF (Русский)
31-35
On the best mean-square approximation by entire functions of finite type on the line
S.B. Vakarchuk, M.B. Vakarchuk
PDF (Русский)
36-41
Exact values and estimates of interpolational spreads of some subspaces of Hermitian splines
V.L. Velikіn
PDF (Русский)
42-47
On approximation of functions by algebraic polynomials in $$$L^p_{\rho}$$$ metric
S.V. Goncharov
PDF (Русский)
48-59
Quasi-lower semicontinuous regularization of mappings in Banach spaces
A.V. Dovzhenko, P.I. Kogut
PDF (Українська)
60-72
Lower bound of extremal Pompeiu radius for half of cone
L.V. Elets
PDF (Русский)
73-79
Estimate of derivatives of functions on the real line in Weil spaces
V.A. Kofanov
PDF (Русский)
80-84
Extremal problem for functional of area
T.V. Lomako, R.R. Salimov
PDF (Русский)
85-90
Properties of generalized Lebesgue constants for partial Fourier-Jacobi sums
O.V. Motorna, V.P. Motornyi
PDF (Русский)
91-98
The best one-sided approximation of classes $$$W^r H^{\omega}$$$ with regard to point location on the interval
A.M. Pasko
PDF (Русский)
99-102
Interval that covers estimate of variance being calculated from interval data
V.I. Ruban
PDF (Русский)
103-104
On widths of some classes of functions with values in Hilbert space
S.V. Savela
PDF (Русский)
105-111
On connection of finite distortion mappings with length distortion in $$$\mathbb{R}^n$$$
Ye.A. Sevostianov
PDF (Русский)
112-119
On Landau-Kolmogorov problem on the interval for absolutely monotonic functions
D.S. Skorokhodov
PDF (Русский)
120-128
Conditions, under which projective Sylow subgroups of almost locally normal group are locally conjugate
O.M. Tkachenko
PDF (Українська)
129-132
Conditions of unicity of the best non-symmetric $$$L_1$$$-approximant for vector-valued functions by subspace of constant mappings
M.Ye. Tkachenko, V.M. Traktynska
PDF (Русский)
133-139
On subgroups that are nearly pronormal
V.A. Chupordia
PDF (Українська)
140-142
On groups that are nearly metahamiltonian
O.A. Yarova
PDF (Русский)
143-149
A note on H-convergence
O.P. Kogut, P.I. Kogut, T.N. Rudyanova
PDF
150-162