The Drazin inverses of infinite triangular matrices and their linear preservers by Słowik, R., Словік, Р.

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A note on the coefficient estimates for some classes of $p$ -valent functions by Sharma, N. L., Шарма, Н. Л.

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Estimates of the best bilinear approximations for the classes of $(ψ,β)$-differentiable periodic multivariate functions by Shvai, K. V., Швай, К. В.

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Best approximation of the functions from anisotropic Nikol’skii – Besov classes defined in $R^d$ by Yanchenko, S. Ya., Янченко, С. Я.

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A corrigendum to “Hereditary properties between a ring and its maximal subrings” by Gaur, A., Kumar, R., Гаур, А., Кумар, Р.

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Second-order differential subordinations on a class of analytic functions defined by Rafid-operator by Akgül, A., Акгюл, А.

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Numerical solutions of fractional system, two-point BVPs using iterative reproducing kernel algorithm by Al-Smadi, M., Altawallbeh, Z., Ateiwi, A. M., Komashinskaya, I. V., Аль-Смаді, М., Алтавабех, З., Атеіві, А. М., Комашинська, І. В.

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Divergence theorem in the $L_2$ -version. Application to the Dirichlet problem by Bogdanskii, Yu. V., Богданский, Ю. В., Богданский, Ю. В.

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On the approximation of the classes $W_{β}^rH^{α}$ by biharmonic Poisson integrals by Hrabova, U. Z., Kalchuk, I. V., Stepanyuk, T. A., Грабова, У. З., Кальчук, І. В., Степанюк, Т. А.

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On Darboux vector in Lorentzian 5-space by Iyigün, E., Ійігун, Е.

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Application of the method of averaging to the problems of optimal control for ordinary differential equations on the semiaxis by Kichmarenko, O. D., Кічмаренко, О. Д.

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Joint universality for $L$-functions from Selberg class and periodic Hurwitz zeta-functions by Macaitienė, R., Макатіене, Р.

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Construction of intermediate differentiable functions by Maslyuchenko, V. K., Mel'nik, V. S., Маслюченко, В. К., Мельник, В. С.

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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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Multiple modules of continuity and the best approximations of periodic functions in metric spaces by Pichugov, S. A., Пичугов, С. А., Пичугов, С. А.

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Best approximations of the Cauchy – Szegö kernel in the mean on the unit circle by Savchuk, V. V., Савчук, В. В.

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Necessary and sufficient conditions for the absolute instability of solutions of linear differential-difference equations with self-adjoint operator coefficients by Slyusarchuk, V. Yu., Слюсарчук, В. Ю.

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Lyapunov-type inequalities for two classes of nonlinear systems with homogeneous Dirichlet boundary conditions by Aktaş, M. F., Актас, М. Ф.

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Spectral properties of nonself-adjoint nonlocal boundary-value problems for the operator of differentiation of even order by Baranetskij, Ya. O., Kalenyuk, P. I., Kolyasa, L. I., Баранецький, Я. О., Каленюк, П. І., Коляса, Л. І.

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Weighted pseudoinversion with indefinite weights by Vareniuk, N. A., Galba, E. F., Sergienko, I. V., Khimich, A. N., Варенюк, Н. А., Галба, Е. Ф., Сергиенко, И. В., Химич, А. Н., Варенюк, Н. А., Галба, Е. Ф., Сергиенко, И. В., Химич, А. Н.

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