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Issue Title
 
1987 The best, by coefficients, weighted quadrature formulas of the form $$$\sum\limits_{k=1}^n \sum\limits_{i=0}^{r-1} A_{ki} f^{(i)}_{jk}$$$ for some classes of differentiable functions Abstract   PDF (Русский)
Ye.Ye. Dunaichuk
 
Vol 32, No 2 (2024) The best $$$m$$$-term trigonometric approximations of the classes of periodic functions of one and many variables in the space $$$B_{q,1}$$$ Abstract   PDF
K.V. Pozharska, A.S. Romanyuk
 
Vol 18 (2010) The best one-side approximation of classes of integrals of fractional order with regard to position of point on interval Abstract   PDF (Русский)
A.M. Pasko
 
Vol 17 (2009) The best one-sided approximation of classes $$$W^r H^{\omega}$$$ with regard to point location on the interval Abstract   PDF (Русский)
A.M. Pasko
 
Vol 20 (2012) The best one-sided approximations of the class of differentiable functions by algebraic polynomials in $$$L_1$$$ space Abstract   PDF (Українська)
V.P. Motornyi, V.V. Sedunova
 
Vol 24 (2016) The best polynomial approximation, derivatives of fractional order, and widths of classes of functions in $$$L_2$$$ Abstract   PDF (Русский)
S.B. Vakarchuk, M.B. Vakarchuk
 
Vol 26 (2018) The best polynomial approximations of some classes of analytic functions in the Hardy spaces Abstract   PDF (Українська)
S.B. Vakarchuk, V.I. Zabutna, M.B. Vakarchuk
 
Vol 27, No 2 (2019) The Betti numbers of the space $$$\mathbb{C}\Omega_3$$$ Abstract   PDF
A.M. Pasko
 
Vol 27, No 1 (2019) The Bojanov-Naidenov problem for trigonometric polynomials and periodic splines Abstract   PDF
E.V. Asadova, V.A. Kofanov
 
Vol 27, No 2 (2019) The characterization of the best approximant for the multivariable functions in the space $$$L_{p_1,..,p_n;\Omega }$$$ Abstract   PDF
M.Ye. Tkachenko, V.M. Traktynska
 
Vol 26 (2018) The criterion of the best approximant for the multivariable functions in the space $$$L_{p_1,...,p_{i-1},1,p_{i+1},...,p_n}$$$ Abstract   PDF
V.M. Traktyns'ka, M.Ye. Tkachenko, D.O. Osennikova
 
Vol 20 (2012) The error at interpolation of some classes of multivariable functions by multifaceted functions and multilinear splines Abstract   PDF (Русский)
V.F. Babenko, T.Yu. Leskevich
 
Vol 30, No 1 (2022) The fundamental group of the space $$$\Omega_n(m)$$$ Abstract   PDF
A.M. Pasko
 
Vol 30, No 2 (2022) The homology groups $$$H_{n+1} \left( \mathbb{C}\Omega_n \right)$$$ Abstract   PDF
A.M. Pasko
 
Vol 32, No 2 (2024) The homology groups of the Cartesian product $$$\Omega_{n_1}(m_1)\times \Omega_{n_2}(m_2)$$$ Abstract   PDF
A.M. Pasko
 
Vol 27, No 1 (2019) The homology groups of the space $$$\Omega_n(m)$$$ Abstract   PDF
A.M. Pasko
 
Vol 32, No 1 (2024) The norming set of a bilinear form on a certain normed space $$$\mathbb{R}^2$$$ Abstract   PDF
S.G. Kim
 
Vol 26 (2018) The order of the best transfinite interpolation of functions with bounded laplacian with the help of harmonic splines on box partitions Abstract   PDF
D. Skorokhodov
 
Vol 28, No 1 (2020) The pointwise estimation of the one-sided approximation of the class $$$\breve{W}_\infty^r,\; 0 < r < 1$$$ Abstract   PDF
A.M. Pasko
 
Vol 28, No 1 (2020) The Rate of Convergence of Truncated Hypersingular Integrals Generated by the Generalized Poisson Semigroup Abstract   PDF
S.E. Sinem, E. Melih, Ç. Selim
 
Vol 32, No 2 (2024) The uniqueness of the best $$$L_1$$$-approximant of continuous Banach-valued functions under interpolatory constraints Abstract   PDF
M.Ye. Tkachenko, V.M. Traktynska
 
Vol 29, No 1 (2021) The uniqueness of the best non-symmetric $$$L_1$$$-approximant for continuous functions with values in $$$\mathbb{R}^m_p$$$ Abstract   PDF
M.Ye. Tkachenko, V.M. Traktynska
 
Vol 28, No 1 (2020) The uniqueness of the best non-symmetric $$$L_1$$$-approximant with a weight by $$$A_{\alpha ,\beta }$$$-subspace Abstract   PDF
M.Ye. Tkachenko, V.O. Traktynskyi
 
Vol 27, No 1 (2019) The uniqueness of the best non-symmetric $$$L_1$$$-approximant with a weight for continuous functions with values in KB-space Abstract   PDF
M.Ye. Tkachenko, V.M. Traktynska
 
Vol 17 (2009) Theorem on width of ball in spaces of mappings Abstract   PDF (Русский)
V.F. Babenko
 
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