Results for "1991"

Results for "1991" Showing 1 - 50 results of 19417 Laminas_Feed_Writer 2 (https://getlaminas.org) https://harvester.nas.gov.ua/Search/Results?sort=last_indexed+desc&limit=50&lookfor=%221991%22&type=AllFields&lng=en 19417 0 50 Структура хвостов кометы Леви 1990 XX Thu, 16 Apr 2026 03:20:10 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215924 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215924 Сизоненко, Ю.В. Article 1997 Сизоненко, Ю.В. 0 Состояние и проблемы развития радиоэлектронной отрасли Украины Thu, 16 Apr 2026 01:00:18 +0000 https://harvester.nas.gov.ua/Record/oai:tkea.com.ua:article-1009 https://harvester.nas.gov.ua/Record/oai:tkea.com.ua:article-1009 Demedyuk, A. V. Article 2005 Demedyuk, A. V. 0 О свечении белой вспышки 15 июня 1991 г. в линиях С I, С II, Mg II и Не II Wed, 15 Apr 2026 15:44:45 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216165 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216165 Бабин, А.Н. Article 1999 Бабин, А.Н. 0 90-річчя академіка НАН України В. Ю. Сторіжка Wed, 15 Apr 2026 15:22:58 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216027 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216027 Article 2025 0 75-річчя члена-кореспондента НАН України В. Ю. Максимчука Wed, 15 Apr 2026 11:45:01 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216126 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-216126 Article 2025 0 Yuri Kondratiev (1953–2023) Sun, 12 Apr 2026 01:00:16 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9074 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9074 Editorial Board of the "Ukrainian Mathematical Journal" Article 2026 Editorial Board of the "Ukrainian Mathematical Journal" 0 Про користь від читання надгробних інскрипцій Thu, 26 Mar 2026 19:17:40 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215690 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215690 Гужинський, С. Article 2014 Гужинський, С. 0 Про невідомих дітей польської магнатерії у світлі парафіяльних метрик померлих костелу св. Хреста у Варшаві в 1670–1801 pp. Вибрані приклади Thu, 26 Mar 2026 19:17:36 +0000 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215689 https://harvester.nas.gov.ua/Record/nasplib_isofts_kiev_ua-123456789-215689 Дацька-Гужинська, І. Article 2014 Дацька-Гужинська, І. 0 DATA ACQUISITION AND MULTITHREAD PROCESSING IN STEPPED-FREQUENCY NOISE GROUND-BASED SAR FOR 2D REAL-TIME IMAGING Thu, 26 Mar 2026 16:19:09 +0000 https://harvester.nas.gov.ua/Record/rpra-journalorgua-article-1489 https://harvester.nas.gov.ua/Record/rpra-journalorgua-article-1489 Lukin, K. Article 2026 Lukin, K. 0 VITALII PAVLOVYCH MOTORNYI (28.07.1940–21.07.2025) Tue, 24 Mar 2026 03:46:24 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9700 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9700 O. M. Tymokha, V. L. Makarov, I. O. Shevchuk, V. Ya. Gutlyanskii, V. F. Babenko, S. B. Vakarchuk, O. V. Davydov, V. A. Kofanov, N. V. Parfinovych, A. S. Romanyuk, A. S. Serdyuk, I. V. Sokolenko Article 2026 O. M. Tymokha, V. L. Makarov, I. O. Shevchuk, V. Ya. Gutlyanskii, V. F. Babenko, S. B. Vakarchuk, O. V. Davydov, V. A. Kofanov, N. V. Parfinovych, A. S. Romanyuk, A. S. Serdyuk, I. V. Sokolenko 0 Inequality of the Bernshtein type for polynomial splines in the space $L_2$ Tue, 24 Mar 2026 03:46:23 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9625 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9625 Babenko , V. F. Article 1991 Babenko , V. F. 0 On properties of continuous mapings of nonlimited metric spaces Tue, 24 Mar 2026 03:46:23 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9626 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9626 Davydov , N. A. Article 1991 Davydov , N. A. 0 On the polynomial approximation of solution for the Cauchy problem Tue, 24 Mar 2026 03:46:23 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9627 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9627 Ismailov , Z. I. Article 1991 Ismailov , Z. I. 0 Average quadratic error of the estimate of the first order splines in the model of linear regression Tue, 24 Mar 2026 03:46:23 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9628 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9628 Petunina , M. Yu. Article 1991 Petunina , M. Yu. 0 On some boundary value problems for linear multidimensional hyperbolic equations of the second order Tue, 24 Mar 2026 03:46:22 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9624 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9624 Aldashev , S. A. Article 1991 Aldashev , S. A. 0 Mutual spectrum of commutating conjugate operators and correctness and stability criteria for differential-operator equations Tue, 24 Mar 2026 03:46:21 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9623 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9623 Shklyar , A. Ya. Article 1991 Shklyar , A. Ya. 0 Conditional invariance of the nonlinear wave equation Tue, 24 Mar 2026 03:46:19 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9621 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9621 Fushchich , V. I. Article 1991 Fushchich , V. I. 0 On integral functions with derivatives univalent in a circle Tue, 24 Mar 2026 03:46:19 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9622 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9622 Sheremeta , M. N. Article 1991 Sheremeta , M. N. 0 On existence and uniqueness of solutions of the sets of nonlinear differential-difference equations of neutral type bounded on the whole axis Tue, 24 Mar 2026 03:46:18 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9620 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9620 Samoilenko , A. M. Article 1991 Samoilenko , A. M. 0 On self-conjugate operators generated nonhomogeneous elliptical problems with discontinuity boundary conditions and conditions of conjugacy Tue, 24 Mar 2026 03:46:16 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9618 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9618 Nizhnik , L. P. Article 1991 Nizhnik , L. P. 0 On lowering the order of gyroscopic systems Tue, 24 Mar 2026 03:46:16 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9619 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9619 Nosirov , F. U. Article 1991 Nosirov , F. U. 0 Strong consistency of the estimate for the fourth order moment function of the stationary random process Tue, 24 Mar 2026 03:46:15 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9615 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9615 Le Fe Do Article 1991 Le Fe Do 0 On a class of boundary value problems in the theory of surface waves Tue, 24 Mar 2026 03:46:15 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9616 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9616 Lukovsky , I. A. Article 1991 Lukovsky , I. A. 0 On solubility of problems of clectromagnetoelasticity with memory Tue, 24 Mar 2026 03:46:15 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9617 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9617 Mitropolsky , Yu. A. Article 2025 Mitropolsky , Yu. A. 0 On variational problems of the theory of potential Tue, 24 Mar 2026 03:46:14 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9614 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9614 Zoriy , N. V. Article 1991 Zoriy , N. V. 0 On integral representations in the Hardi classes and on the best approximations in some functional spaces Tue, 24 Mar 2026 03:46:13 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9613 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9613 Dovgoshei , A. A. Article 1991 Dovgoshei , A. A. 0 Limiting theorems for the best polynomial approximations in $L_\infty$ metrics Tue, 24 Mar 2026 03:46:12 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9612 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9612 Ganzburg , M. I. Article 1991 Ganzburg , M. I. 0 Quasi-variance of the modulus of homotopical classes of curves and Teichmuller’s problem Tue, 24 Mar 2026 03:46:11 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9611 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9611 Vasiliev , A. Yu. Article 1991 Vasiliev , A. Yu. 0 Asymptotic properties of correlation estimates in the functional spaces. II Tue, 24 Mar 2026 03:46:10 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9610 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9610 Buldygin , V. V. Article 1991 Buldygin , V. V. 0 On the 100th birthday of academician V. S. Korolyuk Tue, 24 Mar 2026 03:46:09 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9425 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9425 , Редакційна колегія „Українського математичного журналу” Article 2026 , Редакційна колегія „Українського математичного журналу” 0 Periodic solutions of quasi-linear impulse systems in a critical case Tue, 24 Mar 2026 03:46:08 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9608 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9608 Akhmetov , M. U. Article 2025 Akhmetov , M. U. 0 Averaging in parabolic systems subjected to weakly dependent random effects. $L_2$-approach Tue, 24 Mar 2026 03:46:08 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9609 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9609 Bondarev , В. V. Article 1991 Bondarev , В. V. 0 Leonid Pavlovych Nyzhnyk (on his 90th birthday) Tue, 24 Mar 2026 03:46:07 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9395 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9395 , Editorial Board of the Ukrainian Mathematical Journal Article 2026 , Editorial Board of the Ukrainian Mathematical Journal 0 Problems of saturation of linear methods Tue, 24 Mar 2026 03:46:07 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9607 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9607 Gavrilyuk , V. T. Article 1991 Gavrilyuk , V. T. 0 Soviet-Swiss symposium on the branching processes Tue, 24 Mar 2026 03:46:04 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9372 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9372 Shurenkov , V. M. Article 2025 Shurenkov , V. M. 0 Properties of the series of exponents whose indices have finite density Tue, 24 Mar 2026 03:46:03 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9370 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9370 Krutigolova , E. K. Article 2025 Krutigolova , E. K. 0 Weight $\mathrm {sl}(3)$-modules generated by half-primitive elements Tue, 24 Mar 2026 03:46:02 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9371 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9371 Futorny , V. M. Article 2025 Futorny , V. M. 0 One asymptotical estimate for sums of independent random values in the Banach space Tue, 24 Mar 2026 03:46:00 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9368 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9368 Matsak , I. K. Article 2025 Matsak , I. K. 0 On averaging of stochastic systems of integrodifferential equations with the «Poisson noise» Tue, 24 Mar 2026 03:46:00 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9369 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9369 Kolomiets , V. G. Article 2025 Kolomiets , V. G. 0 On behaviour of integral functions represented by the Dirichlet series on the real axis Tue, 24 Mar 2026 03:45:59 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9367 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9367 Vinnitsky , В. V. Article 2025 Vinnitsky , В. V. 0 Estimates for stability of the Runge-Kutta method for differential equations with a variable operator Tue, 24 Mar 2026 03:45:58 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9366 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9366 Bakaev , N. Yu. Article 2025 Bakaev , N. Yu. 0 Uniform estimates of integral strong average derivations of continuous functions by integral functions Tue, 24 Mar 2026 03:45:57 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9363 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9363 Pachulia , N. L. Article 2025 Pachulia , N. L. 0 Limiting incorrect equations in the Hilbert space Tue, 24 Mar 2026 03:45:56 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9364 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9364 Pogorui , A. A. Article 2025 Pogorui , A. A. 0 Limiting sets of subharmonic functions and associated measures in a cone Tue, 24 Mar 2026 03:45:56 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9365 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9365 Rashkovsky , A. Yu. Article 2025 Rashkovsky , A. Yu. 0 Half-correct solutions of elliptical variational inequalities with discontinuous nonlinearities Tue, 24 Mar 2026 03:45:55 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9362 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9362 Pavlenko , V. N. Article 2025 Pavlenko , V. N. 0 On convergence of the method of orthogonal polynomials of the approximate solution оf the second order integral equations with $\Pi$-kernels Tue, 24 Mar 2026 03:45:54 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9361 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9361 Noreddin , M. M. Article 2025 Noreddin , M. M. 0 On extrapolation of transformations of random processes disturbed by the white noise Tue, 24 Mar 2026 03:45:53 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9360 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9360 Moklyachuk , M. P. Article 2025 Moklyachuk , M. P. 0 On solvability of nonlocal boundary value problems for certain sets of evolutionary differential equations Tue, 24 Mar 2026 03:45:52 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9359 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9359 Malovichko , V. A. Article 2025 Malovichko , V. A. 0 On obtaining exact estimates for the derivative of the error of spline interpolation Tue, 24 Mar 2026 03:45:51 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9358 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9358 Korneichuk , N. P. Article 2025 Korneichuk , N. P. 0 The Liouville theorem for the Cordes type elliptical system of high order Tue, 24 Mar 2026 03:45:50 +0000 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9357 https://harvester.nas.gov.ua/Record/umjimathkievua-article-9357 Kalita , E. A. Article 2025 Kalita , E. A. 0