Two proofs of Cauchy’s Inequality between the arithmetical and geometrical means of a system of non-negative numbers von 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 von 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 von 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 von 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 von Körpinar, T., Demirkol, R. C., Körpinar, T., Demirkol, R. C.

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

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

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Alphabetic index of vol. XVIII von Editorial Board, Редколегія

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

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

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On construction of Chebyshev approximations by functions of interpolating classes von 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 von Sorokina, N. G., Сорокина, Н. Г.

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On one property of spaces admitting a perfect mapping onto the metric ones von Tіmоkhоvіch, V. L., Тимохович, В. Л.

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Nikolai Ivanovich Muskhelishvili (on his 80th birthday) von Mitropolsky, Yu. A., Shevelo, V. N., Митропольский, Ю. А., Шевело, В. Н.

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On transformation operators for a second order differential equation with operator coefficients von Androshchuk, A. A., Андрощук, А. А.

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Some theorems on the behaviour of solutions on the whole for one non-linear system von Balitinov, M. A., Балитинов, М. А.

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Investigation of stability in resonance cases von Valeev, K. G., Vazhgovskaya, M. Ya., Валеев, К. Г., Важговская, М. Я.

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On the small parameter method in the gyrocompass theory von Vasilenko, V. P., Yanishevsky, A. P., Василенко, В. П., Янишевский, А. П.

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On one optimality criterion in isolating a weak additive signal against a background of random noise of arbitrary nature von Gatkіn, N. G., Daletskу, Yu. L., Гаткин, Н. Г., Далецкий, Ю. Л.

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Factorization of matrices-functions of a partial type von Gordienko, V. N., Гордиенко, В. Н.

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