On the reducibility of a system of ordinary differential equations in the vicinity of a smooth integral manifold by Samoilenko, A. M., Самойленко, А. М.

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On the strong solvability of Tricomi’s problem by Sorokina, N. G., Сорокина, Н. Г.

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On the continuity of some conformal invariants by Tamrazov, P. M., Тамразов, П. М.

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On the asymptotic solution of a system of partial linear differential equations by Shkіl, N. I., Шкиль, Н. И.

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Pavel Feodosyevich Filchakov (on his fiftieth birthday) by Ishlinsky, A. Y., Mіtrоpolskу , Y. A., Sоkоlоv, Y. D., Lavrik, V. I., Ишлинский , А. Ю., Митропольский, Ю. А., Соколов, Ю. Д., Лаврик, В. И.

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Approximate solution of integral equations with delayed argument by Y. D. Sokolov’s method by Gal, M. M., Галь, М. М.

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On the representation of the vacuum mean of field operators in a space with an indefinite metrics by Gorbachuk, V. I., Gorbachuk, M. L., Горбачук, В. И., Горбачук, М. Л.

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On the graph groups of groups of automorphisms of finite graphs by Davуdоv, E. G., Давыдов, Э. Г.

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Two proofs of Cauchy’s Inequality between the arithmetical and geometrical means of a system of non-negative numbers by Dzyadyk, V. K., Дзядык, В. К.

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On the stability and instability of solutions of linear differential equations of the $n$th order with periodic coefficients by Zadiraka, К. V., Lоs, G. A., Задирака, К. В., Лось, Г. А.

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On the minimization of the number of arithmetical operation with one transformation of matrices by Klyuev, V. V., Kоkоvkіn-Shcherbak, N. I., Клюев, В. В., Коковкин-Щербак, Н. И.

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On an analytical consequence of the condition of unitariness by Parasyuk, O. S., Парасюк, О. С.

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Curvature and torsion dependent energy of elastica and nonelastica for a lightlike curve in the Minkowski space by Körpinar, T., Demirkol, R. C., Körpinar, T., Demirkol, R. C.

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Mutual arrangement of subspaces in a finitely meric unitary space by Khavidі, Kh. M., Xавиди, X. М.

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On a realization of Newton’s method on a digital computer by Shamansky, V. E., Шаманский, В. Е.

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Alphabetic index of vol. XVIII by Editorial Board, Редколегія

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Some problems of spectral theory of the second order linear differential equation with unlimited operator coefficients by Gorbachuk, V. I., Gorbachuk, M. L., Горбачук, В. И., Горбачук, М. Л.

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Layer-compact Abelian groups by Poletskіkh, V. M., Полецких, В. М.

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On construction of Chebyshev approximations by functions of interpolating classes by Remez, E. Ya., Gavrilуuk, V. T., Ремез, Е. Я., Гаврилюк, В. Т.

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On the normal solvability of the Tricomi problem for an equation of the Lavrentyev — Bitsadze type by Sorokina, N. G., Сорокина, Н. Г.

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