Coefficient conditions for existence of an optimal control for differential systems by O. M. Stanzhytskyi, O. O. Samoilenko

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On regularization of a linear Noether boundary-value problem using a degenerate impulsive effect by S. M. Chujko

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A boundary-value problem for the fourth-order equation with multiple characteristics in a rectangular domain by Yu. P. Apakov, S. M. Mamazhonov

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A boundary-value problem for a loaded mixed-type equation with a characteristic line of type change by U. I. Baltaieva

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Continuous solutions of difference-functional equations with many deviations of the argument by N. L. Denysenko, T. O. Yeromina, O. A. Povarova

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Boundary-value problems for the system of operator-differential equations in the Banach and Hilbert spaces by O. Z. Iskra, O. O. Pokutnyi

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Stability to disturbances for the attractor of the dissipative PDE–ODE-type system by O. V. Kapustian, T. V. Yusypiv

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A model of conflict society with external influence effects by T. V. Karataieva, V. D. Koshmanenko

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Optimal control problem for a differential inclusion with rapidly oscillating coefficients on a semiaxis by O. D. Kichmarenko, O. A. Kapustian, N. V. Kasimova, Yu. Zhuk

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Boundary-value problems for differential systems with pulse action by Z. P. Ordynska, R. F. Ovchar

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A fractional order Covid-19 epidemic model with Mittag-Leffler kernel by H. Khan, M. Ibrahim, A. Khan, O. Tunз, Th. Abdeljawad

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Bounded solutions of difference equations in a Banach space with asymptotically constant operator coefficient by A. V. Chaikovskyi, O. A. Lahoda

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Conditions of solvability of the problem inverse to the Cauchy problem for the difference-algebraic equation by S. M. Chuiko, O. V. Niesmielova, Ya. V. Kalinichenko

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Existence of positive solutions for a population model involving nonlocal operator by S. Shakeri

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Vasyl Yukhymovych Slyusarchuk (on his 75th birthday) by M. O. Perestiuk, O. A. Boichuk, M. F. Horodnii, I. O. Parasiuk, R. I. Petryshyn, V. I. Tkachenko

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Problem nonlocal in time for the evolutionary equation with the fractional differentiation operator by V. V. Horodetskyi, R. S. Kolisnyk, N. M. Shevchuk

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Parabolic boundary-value problems of mathematical physics for a piecewise homogeneous wedge-shaped cylindrically circular layer by A. P. Hromyk, I. M. Konet, T. M. Pylypiuk

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Generalization of the concept of an attractor for pendulum systems with limited excitation by S. V. Donetskyi, Yu. Shvets

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Controllability conditions for Fredholm integro-differential equations with degenerate kernel in Banach spaces by V. P. Zhuravlov, N. V. Honhalo, I. P. Sliusarenko

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Superpositions of functions with fractal properties by M. V. Pratsovytyi, Yu. Yu. Vovk, I. M. Lysenko, S. P. Ratushniak

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