Citation:
A. I. Kozko, A. V. Rozhdestvenskii, “On Jackson's Inequality for Generalized Moduli of Continuity”, Mat. Zametki, 73:5 (2003), 783–788; Math. Notes, 73:5 (2003), 736–741
S. Vakarchuk, M. Vakarchuk, “Nablizhennya v serednomu sumami Fur'є–Besselya klasіv funktsіi u prostorі L
2 [ (
0,1
) ;
x
] ta otsіnki znachen ïkh
n
-poperechnikіv”, Ukr. Mat. Zhurn., 76:2 (2024), 198
Sergii Vakarchuk, Mykhailo Vakarchuk, “Approximation in the Mean for the Classes Of Functions in the Space L2[(0, 1); x] by The Fourier–Bessel Sums And Estimation of the Values of Their n-Widths”, Ukr Math J, 76:2 (2024), 214
M. Sh. Shabozov, K. K. Palavonov, “Neravenstva tipa Dzheksona – Stechkina i znachenie poperechnikov nekotorykh klassov funktsii v $L_{2}$”, Dalnevost. matem. zhurn., 22:1 (2022), 125–137
Vakarchuk S.B., “Generalized Characteristics of Smoothness and Some Extreme Problems of the Approximation Theory of Functions in the Space l-2(). i”, Ukr. Math. J., 70:9 (2019), 1345–1374
S. B. Vakarchuk, “On Estimates in $L_2(\mathbb{R})$ of Mean $\nu$-Widths of Classes of Functions Defined via the Generalized Modulus of Continuity of $\omega_{\mathcal{M}}$”, Math. Notes, 106:2 (2019), 191–202
M. Sh. Shabozov, A. A. Shabozova, “Nekotorye tochnye neravenstva tipa Dzheksona - Stechkina dlya periodicheskikh differentsiruemykh v smysle Veilya funktsii v $L_2$”, Tr. IMM UrO RAN, 25, no. 4, 2019, 255–264
M. Sh. Shabozov, “Nekotorye voprosy approksimatsii periodicheskikh funktsii trigonometricheskimi polinomami v $L_2$”, Chebyshevskii sb., 20:4 (2019), 385–398
S. B. Vakarchuk, “Best Polynomial Approximations and Widths of Classes of Functions in the Space $L_2$”, Math. Notes, 103:2 (2018), 308–312
M. Sh. Shabozov, A. D. Farozova, “Tochnoe neravenstvo Dzheksona–Stechkina s neklassicheskim modulem nepreryvnosti”, Tr. IMM UrO RAN, 22, no. 4, 2016, 311–319
Vakarchuk S.B., “Jackson-Type Inequalities with Generalized Modulus of Continuity and Exact Values of the n-Widths for the Classes of (?, ?)-Differentiable Functions in L 2. I”, Ukr. Math. J., 68:6 (2016), 823–848
Gu Y. Liu Y., “The Sharp Jackson Inequality For $L^2$-Approximation on the Periodic Cylinder”, Acta Math. Sci., 35:2 (2015), 375–382
V. S. Balaganskii, “On the Continuity of the Sharp Constant in the Jackson–Stechkin Inequality in the Space $L^2$”, Math. Notes, 93:1 (2013), 12–28
V. S. Balaganskii, “Exact constant in the Jackson–Stechkin inequality in the space $L^2$ on the period”, Proc. Steklov Inst. Math. (Suppl.), 265, suppl. 1 (2009), S78–S102
Li J., Liu Y., “The Jackson Inequality for the Best L-2-Approximation of Functions on [0,1] with the Weight x”, Numerical Mathematics-Theory Methods and Applications, 1:3 (2008), 340–356