Asymptotic Expansion of the Moments of Correlogram Estimator for the Random-Noise Covariance Function in the Nonlinear Regression Model by O. V. Ivanov, K. K. Moskvychova

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Estimation of the Remainder for the Interpolation Continued C-Fraction by M. M. Pahiria

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Sharpening of the Explicit Lower Bounds for the Order of Elements in Finite Field Extensions Based on Cyclotomic Polynomials by R. Popovich

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Some Approximation Properties of Szasz–Mirakyan–Bernstein Operators of the Chlodovsky Type by E. Tunз, E. Simsek

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Approximations by Fourier Sums on the Sets Lψ Lp(∙) by S. O. Chajchenko

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Determination of the Coefficient of a Semilinear Parabolic Equation for a Boundary-Value Problem with Nonlinear Boundary Condition by Ya. Akhundov, A. I. Gasanova

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On Invariant Subspaces in Weighted Hardy Spaces by V. M. Dilnyi

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s-Conditionally Permutable Subgroups and p-Nilpotency of Finite Groups by Y. Xu, X. H. Li

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Mineralogy in Independent Ukraine (1991-2021) by V. I. Pavlyshyn

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On Some Ramanujan Identities for the Ratios of Eta-Functions by S. Bhargava, K. R. Vasuki, K. R. Rajanna

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Exponentially Convergent Method for the First-Order Differential Equation in a Banach Space with Integral Nonlocal Condition by V. B. Vasylyk, V. L. Makarov

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On Removable Sets for Degenerated Elliptic Equations by T. S. Gadjiev, N. Q. Bayramova

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History of the Appearance of Infinite-Dimensional Analysis and its Development in Ukraine by M. L. Horbachuk

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Necessary and Sufficient Conditions for the Solvability of Linear Boundary-Value Problems for the Fredholm Integrodifferential Equations by D. S. Dzhumabaev

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On One Convolution Equation in the Theory of Filtration of Random Processes by N. B. Engibarjan, A. G. Barsegjan

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Boundary Versions of the Worpitzky Theorem for Two-Dimensional Continued Fractions by Kh. Y. Kuchminska

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Trigonometric Approximations and Kolmogorov Widths of Anisotropic Besov Classes of Periodic Functions of Several Variables by V. V. Myroniuk

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Fractional Calculus of a Unified Mittag-Leffler Function by J. C. Prajapati, B. V. Nathwani

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Untitled by J. Liu, Sh. Li

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Diamonds of Ukraine: Results and Goals by V. M. Kvasnytsia

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