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

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A note on the coefficient estimates for some classes of $p$ -valent functions von 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 von Shvai, K. V., Швай, К. В.

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

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A corrigendum to “Hereditary properties between a ring and its maximal subrings” von 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 von Akgül, A., Акгюл, А.

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Numerical solutions of fractional system, two-point BVPs using iterative reproducing kernel algorithm von 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 von 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 von 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 von 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 von Kichmarenko, O. D., Кічмаренко, О. Д.

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

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

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

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Multiple modules of continuity and the best approximations of periodic functions in metric spaces von 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 von 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 von Slyusarchuk, V. Yu., Слюсарчук, В. Ю.

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Lyapunov-type inequalities for two classes of nonlinear systems with homogeneous Dirichlet boundary conditions von 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 von 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 von 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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