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      <title>On N. N. Bogolyubov&amp;#039;s works in classical and quantum statistical mechanics</title>
      <pubDate>Tue, 24 Mar 2026 03:22:11 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5798</link>
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      <title>Description of bilateral ideals in a class of noncommutative rings. I</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5800</link>
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      <title>Weakly nonlinear boundary-value problems for differential systems with pulse influence</title>
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      <title>Estimates of stability of desynchronized systems</title>
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      <title>Periodic solutions of strongly nonlinear systems with nonclassical right-hand side in the case of a family of generating solutions</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5799</link>
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      <title>Lower bound for the area of an analytic curve inside a cube in the space $ℂ^n$</title>
      <pubDate>Tue, 24 Mar 2026 03:22:07 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5796</link>
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      <title>Method of partial averaging in the systems of standard form with discontinuous right-hand sides</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5794</link>
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      <title>Minimal Morse functions on a pair of manifolds</title>
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      <title>Theorem on integral inequalities with functional argument</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5793</link>
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      <title>Invariance principle for the least squares estimates</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5791</link>
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      <title>Fluctuations of forced vibrations in a medium with resistance</title>
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      <title>Complete integrability of a hydrodynamic Navier-Stokes model of the flow in a two-dimensional incompressible ideal liquid with a free surface</title>
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      <title>KP hierarchy and (1+1)-dimensional multicomponent integrable systems</title>
      <pubDate>Tue, 24 Mar 2026 03:22:00 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5787</link>
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      <title>On linear almost periodic pulse systems</title>
      <pubDate>Tue, 24 Mar 2026 03:22:00 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5788</link>
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      <title>A Kolmogorov type criterion for the best approximating operator</title>
      <pubDate>Tue, 24 Mar 2026 03:21:59 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5789</link>
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      <author>Tyrygin, I. Ya.</author>
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      <title>Some inverse problems for parabolic and elliptic differential-operator equations</title>
      <pubDate>Tue, 24 Mar 2026 03:21:59 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5790</link>
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      <title>Variables of the action-angle type on symplectic manifolds stratified by coisotropic tori</title>
      <pubDate>Tue, 24 Mar 2026 03:21:58 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5785</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5785</guid>
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      <title>Construction of unital matrix polynomials with mutually distinct characteristic roots</title>
      <pubDate>Tue, 24 Mar 2026 03:21:57 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5784</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5784</guid>
      <author>Mel&amp;#039;nyk, O. M.</author>
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      <title>Transformations and inertia of solutions to linear matrix equations</title>
      <pubDate>Tue, 24 Mar 2026 03:21:55 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5783</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5783</guid>
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      <title>On asymptotic normality of the least square estimators of an infinite-dimensional parameter</title>
      <pubDate>Tue, 24 Mar 2026 03:21:54 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5781</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5781</guid>
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    <item>
      <title>Estimates of the Bernstein widths and their analogs</title>
      <pubDate>Tue, 24 Mar 2026 03:21:54 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5782</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5782</guid>
      <author>Kushpel, A. K.</author>
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      <dc:date>1993</dc:date>
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    <item>
      <title>Uniform estimates for monotonic polynomial approximation</title>
      <pubDate>Tue, 24 Mar 2026 03:21:51 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5780</link>
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      <dc:date>1993</dc:date>
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      <title>Szego-Kolmogorov-Krein theorems on weighted trigonometrical approximation and Carleman-type relations</title>
      <pubDate>Tue, 24 Mar 2026 03:21:50 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5773</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5773</guid>
      <author>Bart, V. A.</author>
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      <title>On the commutant of a multiplication operator and conditions of invertibility of its elements</title>
      <pubDate>Tue, 24 Mar 2026 03:21:50 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5777</link>
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      <author>Berezovsky, N. I.</author>
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      <title>On approximation of convolution classes</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5778</link>
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      <author>Bushev, D. M.</author>
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      <title>Reconstruction of linear functionals on classes of analytic functions of two variables on the basis of generalized information</title>
      <pubDate>Tue, 24 Mar 2026 03:21:50 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5779</link>
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      <title>On M. G. Krein&amp;#039;s work in the theory of linear periodic Hamiltonian systems</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5774</link>
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      <title>Bernstein-type inequalities for  $\mathcal{L}$-splines</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5776</link>
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      <title>On connectedness of derivative sets</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5775</link>
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      <title>On M. G. Krein&amp;#039;s contribution to the moment problem</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5770</link>
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      <title>M. G. Krein&amp;#039;s investigations in the theory of entire and meromorphic functions and their further development</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5772</link>
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      <title>M. G. Krein&amp;#039;s ideas in the theory of orthogonal polynomials</title>
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      <title>Theory of self-adjoint extensions of symmetric operators. entire operators and boundary-value problems</title>
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      <title>On M. G. Krein&amp;#039;s papers in the theory of spaces with an indefinite metric</title>
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      <title>New aspects of Krein&amp;#039;s extension theory</title>
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      <title>On time dependent orthogonal polynomials on the unit circle</title>
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      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5767</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5767</guid>
      <author>Ben-Artzi, A.</author>
      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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      <title>Estimation of the solutions of the Sturm-Liouville equation</title>
      <pubDate>Tue, 24 Mar 2026 03:21:38 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5760</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5760</guid>
      <author>Levin, B. Ya.</author>
      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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      <title>Factorization of operators. Theory and applications</title>
      <pubDate>Tue, 24 Mar 2026 03:21:38 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5762</link>
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      <author>Sakhnovich, L. A.</author>
      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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      <title>Mark Grigor&amp;#039;evich Krein</title>
      <pubDate>Tue, 24 Mar 2026 03:21:38 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5765</link>
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      <author>Mitropolskiy, Yu. A.</author>
      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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    <item>
      <title>Uniqueness of solutions of boundary-value problems for operator-differential equations on a finite segment and on a semiaxis</title>
      <pubDate>Tue, 24 Mar 2026 03:21:37 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5761</link>
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      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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      <title>A relation between two results about entire functions of exponential type</title>
      <pubDate>Tue, 24 Mar 2026 03:21:36 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5759</link>
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      <author>Koosis, P.</author>
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      <dc:date>1994</dc:date>
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      <title>Mark Grigor&amp;#039;evich Krein (recollections)</title>
      <pubDate>Tue, 24 Mar 2026 03:21:36 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5763</link>
      <guid>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5763</guid>
      <author>Levin, B. Ya.</author>
      <dc:format>Artikel</dc:format>
      <dc:date>1994</dc:date>
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      <title>Mark Grigor&amp;#039;evich Krein in Kuibyshev (memoirs of a post-graduate student)</title>
      <pubDate>Tue, 24 Mar 2026 03:21:35 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5764</link>
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      <dc:date>1994</dc:date>
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      <title>Uniqueness theorems for rational, algebraic, and algebroid functions</title>
      <pubDate>Tue, 24 Mar 2026 03:21:33 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5757</link>
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      <title>On M. G. Krein&amp;#039;s works in the theory of representations and harmonic analysis on topological groups</title>
      <pubDate>Tue, 24 Mar 2026 03:21:32 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5756</link>
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      <title>A class of admissible functions in the principle of invariance of wave operators</title>
      <pubDate>Tue, 24 Mar 2026 03:21:32 +0000</pubDate>
      <link>https://harvester.nas.gov.ua/Record/umjimathkievua-article-5758</link>
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      <title>Spectral approach to white noise analysis</title>
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      <dc:date>1994</dc:date>
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      <title>Spectral theory of a string</title>
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      <author>Kats, I. S.</author>
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      <dc:date>1994</dc:date>
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      <title>Mark Grigor&amp;#039;evich Krein</title>
      <pubDate>Tue, 24 Mar 2026 03:21:26 +0000</pubDate>
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      <author>Berezansky, Yu. M.</author>
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      <dc:date>1994</dc:date>
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      <title>Unitary colligations and parametrization formulas</title>
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