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Results for Showing 3601 - 3650 results of 310907 Laminas_Feed_Writer 2 (https://getlaminas.org) https://harvester.nas.gov.ua/Search/Results?sort=last_indexed+desc&limit=50&page=73&type=Subject&lng=en 310907 3600 50 Global solutions and invariant tori of difference-differential equations Tue, 24 Mar 2026 03:08:44 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4983 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4983 Belan, E. P. Article 1997 Belan, E. P. 0 Singularly perturbed stochastic systems Tue, 24 Mar 2026 03:08:44 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4984 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4984 Korolyuk, V. S. Article 1997 Korolyuk, V. S. 0 Qualitative analysis of the influence of random perturbations of “white-noise” type applied along the vector of phase velocity on a harmonic oscillator with friction Tue, 24 Mar 2026 03:08:44 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4985 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4985 Kulinich, G. L. Article 1997 Kulinich, G. L. 0 On the contribution of Yu. A. Mitropol’skii to the development of asymptotic methods in nonlinear mechanics Tue, 24 Mar 2026 03:08:40 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4982 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4982 Kolomiyets, V. G. Article 1997 Kolomiyets, V. G. 0 The theory of the numerical-analytic method: Achievements and new trends of development. I Tue, 24 Mar 2026 03:08:38 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4976 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4976 Ronto, M. I. Article 1998 Ronto, M. I. 0 On the 80th birthday of Academician Yu. A. Mitropol’skii Tue, 24 Mar 2026 03:08:38 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4981 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4981 EditorialBoard Article 1997 EditorialBoard 0 Principle of additivity in averaging of degenerate nonlinear Dirichlet problems Tue, 24 Mar 2026 03:08:37 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4977 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4977 Larin, D. V. Article 1998 Larin, D. V. 0 Quasidifferential equations in semilinear metric spaces Tue, 24 Mar 2026 03:08:37 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4980 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4980 Plotnikov, V. A. Article 1998 Plotnikov, V. A. 0 Perturbations of degenerate coisotropic invariant tori of Hamiltonian systems Tue, 24 Mar 2026 03:08:36 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4973 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4973 Parasyuk, I. O. Article 1998 Parasyuk, I. O. 0 On the irreversibility of time for an electromagnetic hereditary linear system Tue, 24 Mar 2026 03:08:36 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4979 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4979 Matarazzo, G. Article 1998 Matarazzo, G. 0 On the problem of estimation of the number of cycles in two-dimensional quadratic systems from the viewpoint of nonlinear mechanics Tue, 24 Mar 2026 03:08:35 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4971 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4971 Leonov, G. A. Article 1998 Leonov, G. A. 0 On the construction of an asymptotic solution of a perturbed Bretherton equation Tue, 24 Mar 2026 03:08:35 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4972 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4972 Mitropolskiy, Yu. A. Article 1998 Mitropolskiy, Yu. A. 0 On the exponential dichotomy of linear almost periodic pulse systems Tue, 24 Mar 2026 03:08:35 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4978 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4978 Tkachenko, V. I. Article 1998 Tkachenko, V. I. 0 Forced frequency locking of rotating waves Tue, 24 Mar 2026 03:08:33 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4975 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4975 Recke, L. Article 1998 Recke, L. 0 On integral manifolds of oscillating systems with slowly varying frequencies Tue, 24 Mar 2026 03:08:32 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4974 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4974 Lakusta, L. M. Article 1998 Lakusta, L. M. 0 Stability of stochastic systems in the diffusion-approximation scheme Tue, 24 Mar 2026 03:08:28 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4970 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4970 Korolyuk, V. S. Article 1998 Korolyuk, V. S. 0 Parametric bufferness in systems of parabolic and hyperbolic equations with small diffusion Tue, 24 Mar 2026 03:08:26 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4969 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4969 Kolesov, A. Yu. Article 1998 Kolesov, A. Yu. 0 Invariant tori of differential equations in a Banach space Tue, 24 Mar 2026 03:08:25 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4968 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4968 Ilolov, M. Article 1998 Ilolov, M. 0 A note on global attractivity in models of hematopoiesis Tue, 24 Mar 2026 03:08:23 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4967 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4967 Gopalsamy, К. Article 1998 Gopalsamy, К. 0 Approximation of $\bar {\psi} - integrals$−integrals of periodic functions by Fourier sums (small smoothness). Iof periodic functions by Fourier sums (small smoothness). I Tue, 24 Mar 2026 03:08:19 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4961 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4961 Stepanets, O. I. Article 1998 Stepanets, O. I. 0 Anatolii Mikhailovich Samoilenko (on his 60th birthday) Tue, 24 Mar 2026 03:08:19 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4966 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4966 Berezansky, Yu. M. Article 1998 Berezansky, Yu. M. 0 The theory of the numerical-analytic method: Achievements and new trends of development. II Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4957 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4957 Ronto, M. I. Article 1998 Ronto, M. I. 0 Nonlinear differential equations with asymptotically stable solutions Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4960 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4960 Slyusarchuk, V. E. Article 1998 Slyusarchuk, V. E. 0 On the structure of the general solution of a degenerate linear system of second-order differential equations Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4962 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4962 Yakovets, V. P. Article 1998 Yakovets, V. P. 0 Averaging method in multifrequency systems with delay Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4963 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4963 Bigun, Ya. I. Article 1998 Bigun, Ya. I. 0 On periodic solutions of nonlinear difference equations in the critical case Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4964 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4964 Pelyukh, G. P. Article 1998 Pelyukh, G. P. 0 Investigation of invariant sets with random perturbations with the use of the Lyapunov function Tue, 24 Mar 2026 03:08:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4965 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4965 Stanzhitskii, A. N. Article 1998 Stanzhitskii, A. N. 0 Hierarchy of the matrix Burgers equations and integrable reductions in the Davey-Stewartson system Tue, 24 Mar 2026 03:08:17 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4959 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4959 Samoilenko, V. G. Article 1998 Samoilenko, V. G. 0 On an upper bound for the number of characteristic values of an operator function Tue, 24 Mar 2026 03:08:16 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4956 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4956 Radzievskii, G. V. Article 1998 Radzievskii, G. V. 0 Invariant tori of linear countable systems of discrete equations given on an infinite-dimensional torus Tue, 24 Mar 2026 03:08:11 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4958 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4958 Samoilenko, A. M. Article 1998 Samoilenko, A. M. 0 Stochastic dynamics and Boltzmann hierarchy. I Tue, 24 Mar 2026 03:08:09 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4955 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4955 Petrina, D. Ya. Article 1998 Petrina, D. Ya. 0 Linear extensions of dynamical systems on a torus that possess Green-Samoilenko functions Tue, 24 Mar 2026 03:08:07 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4953 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4953 Wojtowicz, B. Article 1998 Wojtowicz, B. 0 Methods for the investigation of systems of differential equations with pulse influence Tue, 24 Mar 2026 03:08:07 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4954 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4954 Luchka, A. Y. Article 1998 Luchka, A. Y. 0 Nonlinear boundary-value problems for systems of ordinary differential equations Tue, 24 Mar 2026 03:08:05 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4951 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4951 Boichuk, О. A. Article 1998 Boichuk, О. A. 0 On the decomposition of a perturbed operator of weighted shift Tue, 24 Mar 2026 03:08:03 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4950 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4950 Baskakov, A. G. Article 1998 Baskakov, A. G. 0 Multidimensional integral-sum inequalities Tue, 24 Mar 2026 03:08:03 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4952 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4952 Borisenko, S. D. Article 1998 Borisenko, S. D. 0 All-Ukrainian scientific conference “New approaches to the solution of differential equations” Tue, 24 Mar 2026 03:08:02 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4949 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4949 Ptashnik, B. I. Article 1998 Ptashnik, B. I. 0 A method of asymptotic expansion of an m-parameter family of solutions for a quasilinear system of differential equations Tue, 24 Mar 2026 03:08:00 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4947 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4947 Elnazarov, A. A. Article 1998 Elnazarov, A. A. 0 Conditions for exponential stability and dichotomy of pulse linear extensions of dynamical systems on a torus Tue, 24 Mar 2026 03:08:00 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4948 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4948 Ali, N. A. Article 1998 Ali, N. A. 0 On the limit polynomial for a solution of an elliptic equation of the fourth order with constant coefficients Tue, 24 Mar 2026 03:07:59 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4946 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4946 Foiad, Sobhi Obaid Article 1998 Foiad, Sobhi Obaid 0 Investigation of a linear evolution system in the Banach space with random times of perturbations Tue, 24 Mar 2026 03:07:57 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4945 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4945 Svishchuk, M. Ya. Article 1998 Svishchuk, M. Ya. 0 Linear and nonlinear representations of Galilei groups in two-dimensional space-time Tue, 24 Mar 2026 03:07:56 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4941 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4941 Lagno, V. I. Article 1998 Lagno, V. I. 0 On the application of approximation of the central manifold of a stationary point to one critical case Tue, 24 Mar 2026 03:07:56 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4944 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4944 Nakonechna, S. O. Article 1998 Nakonechna, S. O. 0 On necessary conditions for the weak regularity of a linear extension of a dynamical system on a torus Tue, 24 Mar 2026 03:07:55 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4942 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4942 Grechko, A. L. Article 1998 Grechko, A. L. 0 An iteration method for the problem of averaging in the standard form Tue, 24 Mar 2026 03:07:55 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4943 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4943 Mel'nik, T. A. Article 1998 Mel'nik, T. A. 0 Approximation of $\bar {\psi} - \text{Integrals}$ of periodic functions by Fourier sums (small smoothness). IIof periodic functions by Fourier sums (small smoothness). II Tue, 24 Mar 2026 03:07:54 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4938 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4938 Stepanets, O. I. Article 1998 Stepanets, O. I. 0 On linear homogeneous almost periodic systems that satisfy the Favard condition Tue, 24 Mar 2026 03:07:53 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4940 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4940 Tkachenko, V. I. Article 1998 Tkachenko, V. I. 0 Periodic solutions of systems of two linear first-order ordinary differential equations with degenerate asymmetric matrix with derivatives Tue, 24 Mar 2026 03:07:52 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4936 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4936 Er’omenko, V. O. Article 1998 Er’omenko, V. O. 0 Conditional stability of quasitoroidal manifolds of systems of partial differential equations Tue, 24 Mar 2026 03:07:52 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4939 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4939 Tkach, B. P. Article 1998 Tkach, B. P. 0 Stochastic dynamics and Boltzmann hierarchy. II Tue, 24 Mar 2026 03:07:51 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4937 https://harvester.nas.gov.ua/Record/umjimathkievua-article-4937 Petrina, D. Ya. Article 1998 Petrina, D. Ya. 0