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    <item>
      <title>Necessary and sufficient conditions for the oscillation of solutions of nonlinear differential equations with pulse influence in a banach space</title>
      <pubDate>Tue, 24 Mar 2026 03:01:42 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4586</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4586</guid>
      <author>Slyusarchuk, V. E.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Slyusarchuk, V. E.</dc:creator>
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    <item>
      <title>Pairwise products of moduli of families of curves on a Riemannian Möbius strip</title>
      <pubDate>Tue, 24 Mar 2026 03:01:41 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4587</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4587</guid>
      <author>Okhrimenko, S. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Okhrimenko, S. A.</dc:creator>
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    <item>
      <title>Local properties of gaussian random fields on compact symmetric spaces and theorems of the Jackson-Bernstein type</title>
      <pubDate>Tue, 24 Mar 2026 03:01:39 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4583</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4583</guid>
      <author>Malyarenko, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Malyarenko, A. A.</dc:creator>
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    <item>
      <title>Basic boundary-value problems for one equation with fractional derivatives</title>
      <pubDate>Tue, 24 Mar 2026 03:01:38 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4582</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4582</guid>
      <author>Lopushanskaya, G. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Lopushanskaya, G. P.</dc:creator>
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    <item>
      <title>Decomposability of topological groups</title>
      <pubDate>Tue, 24 Mar 2026 03:01:36 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4581</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4581</guid>
      <author>Zelenyuk, E. G.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Zelenyuk, E. G.</dc:creator>
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    <item>
      <title>Asymptotics of the logarithmic derivative of an entire function of zero order</title>
      <pubDate>Tue, 24 Mar 2026 03:01:35 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4580</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4580</guid>
      <author>Zabolotskii, N. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Zabolotskii, N. V.</dc:creator>
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    <item>
      <title>Tables of Contents, Volume 52, Numbers 1–12, 2000</title>
      <pubDate>Tue, 24 Mar 2026 03:01:30 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4577</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4577</guid>
      <author>EditorialBoard</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>EditorialBoard</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On the Levy-Baxter theorems for shot-noise fields. II</title>
      <pubDate>Tue, 24 Mar 2026 03:01:30 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4579</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4579</guid>
      <author>Buldygin, V. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
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    <item>
      <title>On Inequalities of the Landau–Kolmogorov–Hörmander Type on a Segment and Real Straight Line</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4571</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4571</guid>
      <author>Kofanov, V. A.</author>
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      <dc:date>2000</dc:date>
      <dc:creator>Kofanov, V. A.</dc:creator>
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    <item>
      <title>Approximation of Periodic Analytic Functions by Interpolation Trigonometric Polynomials</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4572</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4572</guid>
      <author>Serdyuk, A. S.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Serdyuk, A. S.</dc:creator>
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    <item>
      <title>On One Counterexample in Convex Approximation</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4576</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4576</guid>
      <author>Yushchenko, L. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Yushchenko, L. P.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On differentiability of mappings of finite-dimensional domains into Banach spaces</title>
      <pubDate>Tue, 24 Mar 2026 03:01:29 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4578</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4578</guid>
      <author>Bondar, A. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>1999</dc:date>
      <dc:creator>Bondar, A. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Criteria for the Asymptotic Stability of Solutions of Dynamical Systems</title>
      <pubDate>Tue, 24 Mar 2026 03:01:28 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4573</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4573</guid>
      <author>Valeyev, K. G.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Valeyev, K. G.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Groups Proper Nonmaximal Subgroups of Which Are Cyclic or Minimal Noncyclic</title>
      <pubDate>Tue, 24 Mar 2026 03:01:28 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4574</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4574</guid>
      <author>Koval, Т. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Koval, Т. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Joint Continuity and Quasicontinuity of Horizontally Quasicontinuous Mappings</title>
      <pubDate>Tue, 24 Mar 2026 03:01:27 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4575</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4575</guid>
      <author>Maslyuchenko, V. K.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Maslyuchenko, V. K.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>$V$-Limit Analysis of Vector-Valued Mappings</title>
      <pubDate>Tue, 24 Mar 2026 03:01:26 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4570</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4570</guid>
      <author>Kogut, P. I.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Kogut, P. I.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Asymptotics of Blaschke Products the Counting Function of Zeros of Which Is Slowly Increasing</title>
      <pubDate>Tue, 24 Mar 2026 03:01:24 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4569</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4569</guid>
      <author>Zabolotskii, N. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Zabolotskii, N. V.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Rings with Elementary Reduction of Matrices</title>
      <pubDate>Tue, 24 Mar 2026 03:01:23 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4568</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4568</guid>
      <author>Zabavskii, B. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Zabavskii, B. V.</dc:creator>
      <slash:comments>0</slash:comments>
    </item>
    <item>
      <title>Asymptotic Discontinuity of Smooth Solutions of Nonlinear $q$-Difference Equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:22 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4566</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4566</guid>
      <author>Derfel&amp;#039;, G. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Derfel&amp;#039;, G. A.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Optimization Problem on Permutations with Linear-Fractional Objective Function: Properties of the Set of Admissible Solutions</title>
      <pubDate>Tue, 24 Mar 2026 03:01:21 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4567</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4567</guid>
      <author>Emets, O. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Emets, O. A.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>On Bounded Solutions of Some Classes of Two-Parameter Difference Equations in a Banach Space</title>
      <pubDate>Tue, 24 Mar 2026 03:01:15 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4565</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4565</guid>
      <author>Gorodnii, M. F.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Gorodnii, M. F.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Regularity of a Boundary Point for Degenerate Parabolic Equations with Measurable Coefficients</title>
      <pubDate>Tue, 24 Mar 2026 03:01:14 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4560</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4560</guid>
      <author>Skrypnik, I. I.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Skrypnik, I. I.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Dynamic Game Problems of Approach for Fractional-Order Equations</title>
      <pubDate>Tue, 24 Mar 2026 03:01:14 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4561</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4561</guid>
      <author>Eydelman, S. D.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Eydelman, S. D.</dc:creator>
      <slash:comments>0</slash:comments>
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    <item>
      <title>Equivalence of Differential Operators in Spaces of Analytic Functions over the Tate Field</title>
      <pubDate>Tue, 24 Mar 2026 03:01:14 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4564</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4564</guid>
      <author>Volchkov, V. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Volchkov, V. V.</dc:creator>
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    <item>
      <title>On the Cauchy Problem for   $\mathop {2b}\limits^ \to$ -Parabolic Systems with Growing Coefficients</title>
      <pubDate>Tue, 24 Mar 2026 03:01:13 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4555</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4555</guid>
      <author>Ivasyshen, S. D.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Ivasyshen, S. D.</dc:creator>
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    <item>
      <title>On the Convergence of Certain Numerical Characteristics of Variational Dirichlet Problems in Variable Domains</title>
      <pubDate>Tue, 24 Mar 2026 03:01:13 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4556</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4556</guid>
      <author>Kovalevskii, A. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Kovalevskii, A. A.</dc:creator>
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    <item>
      <title>Inequalities of the Jackson Type in the Approximation of Periodic Functions by Fejér, Rogosinski, and Korovkin Polynomials</title>
      <pubDate>Tue, 24 Mar 2026 03:01:13 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4563</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4563</guid>
      <author>Bozhukha, L. N.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Bozhukha, L. N.</dc:creator>
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    <item>
      <title>Homogenization of a Singularly Perturbed Parabolic Problem in a Thick Periodic Junction of the Type 3:2:1</title>
      <pubDate>Tue, 24 Mar 2026 03:01:12 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4558</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4558</guid>
      <author>Mel&amp;#039;nik, T. A.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Mel&amp;#039;nik, T. A.</dc:creator>
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    <item>
      <title>On Compensated Compactness for Nonlinear Elliptic Problems in Perforated Domains</title>
      <pubDate>Tue, 24 Mar 2026 03:01:11 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4559</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4559</guid>
      <author>Skrypnik, I. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Skrypnik, I. V.</dc:creator>
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    <item>
      <title>On Some Properties of Orthogonal Polynomials over an Area in Domains of the Complex Plane. I</title>
      <pubDate>Tue, 24 Mar 2026 03:01:11 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4562</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4562</guid>
      <author>Abdullayev, F. G.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Abdullayev, F. G.</dc:creator>
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    <item>
      <title>Multivariational Inequalities and Operator Inclusions in Banach Spaces with Mappings of the Class $(S)_{+}$</title>
      <pubDate>Tue, 24 Mar 2026 03:01:09 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4557</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4557</guid>
      <author>Mel&amp;#039;nik, V. S.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Mel&amp;#039;nik, V. S.</dc:creator>
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    <item>
      <title>On the Theory of Generalized Toeplitz Kernels</title>
      <pubDate>Tue, 24 Mar 2026 03:01:02 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4553</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4553</guid>
      <author>Berezansky, Yu. M.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Berezansky, Yu. M.</dc:creator>
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      <title>On the Spectrum of an Equivariant Extension of the Laplace Operator in a Ball</title>
      <pubDate>Tue, 24 Mar 2026 03:01:02 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4554</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4554</guid>
      <author>Burskii, V. P.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Burskii, V. P.</dc:creator>
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      <title>On the Solvability of the Hele–Shaw Model Problem in Weighted Hölder Spaces in a Plane Angle</title>
      <pubDate>Tue, 24 Mar 2026 03:01:00 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4552</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4552</guid>
      <author>Bazalii, B. V.</author>
      <dc:format>Article</dc:format>
      <dc:date>2000</dc:date>
      <dc:creator>Bazalii, B. V.</dc:creator>
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      <title>Igor Volodymyrovych Skrypnik (On His 60th Birthday)</title>
      <pubDate>Tue, 24 Mar 2026 03:00:57 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4551</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-4551</guid>
      <author>Berezansky, Yu. M.</author>
      <dc:format>Article</dc:format>
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