Generalized characteristics of smoothness and some extremе problems of the approximation theory of functions in the space $L_2 (R)$. I by Vakarchuk, S. B., Вакарчук, С. Б., Вакарчук, С. Б.

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Continued-fractions representations of the functions $\mathrm{s}\mathrm{h} z, \mathrm{c}\mathrm{h} z, \mathrm{s}\mathrm{i}\mathrm{n} z, \mathrm{c}\mathrm{o}\mathrm{s} z$ by Pahirya, M. M., Пагіря, М. М.

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Simple transitive 2-representations for two non-fiat 2-categories of projective functors by Mazorchuk, V. S., Zhang, Xiaoting, Мазорчук, В. С., Чжан, Сяотин

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Use of ontological analysis for competence evaluation of scientists in a particular subject domain by Rogushina, J.V.

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Order equalities for some functionals and their application to the estimation of the best $n$-term approximations and widths by Shydlich, A. L., Шидліч, А. Л.

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Asymptotic behavior of eigenvalues and eigenfunctions of the Fourier problem in a thick multilevel junction by Mel'nik, T. A., Мельник, Т. А.

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Estimates of approximation characteristics and properties of operators of the best approximation for the classes of periodic functions in the space $B_{1,1}$ by Romanyuk, A. S., Yanchenko, S. Ya., Романюк, А. С., Янченко, С. Я.

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$K$-functionals and extreme problems of the theory of approximation for classes of analytic functions in the circle. I by Vakarchuk, S. B., Vakarchuk, M. B., Вакарчук, С. Б., Вакарчук, М. Б.

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On the countability of the number of solutions of a two-dimensional linear Pfaff system with different characteristic sets by Izobov, N. A., Изобов, Н. А., Изобов, Н. А.

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Optimization of projection schemes of digitization of ill-posed problems by Solodkii, S. G., Солодкий, С. Г., Солодкий, С. Г.

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Superintegrable and scale invariant quantum systems with position dependent mass by Nikitin, A. G., Нікітін, А. Г.

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Тестування кольорових еталонних мішеней для цілей оцифрування гербарію by Novikov, Andriy, Sup-Novikova, Mariia, Nachychko, Viktor, Kuzyarin, Oleksandr

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To the issue of optimizing cloud computing based on their cost by Doroshenko, А.Yu., Novak, O.S.

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Finite groups with X-quasipermutable Sylow subgroups by Xiaolan, Yi, Xue, Yang, Сяолань, Ій, Хуе, Янг

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On the polyconvolution for the Fourier cosine, Fourier sine, and Kontorovich–Lebedev integral transforms by Thao, N. X., Virchenko, N. A., Тао, Н. Х., Вірченко, Н. О.

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On infinite-rank singular perturbations of the Schrödinger operator by Kuzhel', S. A., Vavrykovych, L., Кужіль, С. О., Ваврикович, Л.

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Best M-term orthogonal trigonometric approximations of the classes B Ωp,θ of periodic functions of many variables by Stasyuk, S. A., Стасюк, С. А.

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The problem of V. N. Dubinin for symmetric multiconnected domains by Zabolotnii , Ya. V., Заболотний, Я. В.

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Surfaces generated by the real and imaginary parts of analytic functions: $A$-deformations occurring independently or simultaneously by Bezkorovaina, L. L., Безкоровайная, Л. Л., Безкоровайная, Л. Л.

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Parallel Affine Immersions ${M^n}\to {{\mathbb{R}}^{n+2 }}$ with Flat Connection by Shugailo, E. A., Шугайло, Е. А., Шугайло, Е. А.

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