<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">mais</journal-id><journal-title-group><journal-title xml:lang="ru">Моделирование и анализ информационных систем</journal-title><trans-title-group xml:lang="en"><trans-title>Modeling and Analysis of Information Systems</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1818-1015</issn><issn pub-type="epub">2313-5417</issn><publisher><publisher-name>Yaroslavl State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18255/1818-1015-2014-3-5-34</article-id><article-id custom-type="elpub" pub-id-type="custom">mais-107</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Оригинальные статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Метод центральных многообразий в задаче асимптотического интегрирования функционально-дифференциальных уравнений с колебательно убывающими коэффициентами. I</article-title><trans-title-group xml:lang="en"><trans-title>Center Manifold Method in the Asymptotic Integration Problem for Functional Differential Equations with Oscillatory Decreasing Coefficients. I</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нестеров</surname><given-names>Павел Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterov</surname><given-names>P. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. физ.-мат. наук, доцент, 150000 Россия, г. Ярославль, ул. Советская, 14</p></bio><bio xml:lang="en"><p>канд. физ.-мат. наук, доцент, Sovetskaya str., 14, Yaroslavl, 150000, Russia</p></bio><email xlink:type="simple">nesterov.pn@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ярославский государственный университет им. П.Г. Демидова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>P.G. Demidov Yaroslavl State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>20</day><month>06</month><year>2014</year></pub-date><volume>21</volume><issue>3</issue><fpage>5</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нестеров П.Н., 2014</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="ru">Нестеров П.Н.</copyright-holder><copyright-holder xml:lang="en">Nesterov P.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.mais-journal.ru/jour/article/view/107">https://www.mais-journal.ru/jour/article/view/107</self-uri><abstract><p>В работе исследуется задача асимптотического интегрирования некоторого класса линейных систем функционально-дифференциальных уравнений в окрестности бесконечности. Изучается вопрос о построении асимптотики решений указанных систем в критическом случае. С помощью идеологии метода центральных многообразий нами показано существование так называемого критического многообразия, положительно инвариантного относительно траекторий исходной системы. Установлено, что асимптотика решений системы на данном многообразии описывает в главном асимптотику всех решений исходной системы. В первой части работы предложен алгоритм приближенного построения критического многообразия. Кроме того, обоснована однозначная разрешимость возникающих в ходе реализации этой процедуры вспомогательных алгебраических задач.</p></abstract><trans-abstract xml:lang="en"><p>In this paper, we study the asymptotic integration problem in the neighborhood of infinity for a certain class of linear functional differential systems. We construct the asymptotics for solutions of the considered systems in the critical case. Using the ideas of the center manifold method, we show the existence of the so-called critical manifold that is positively invariant for trajectories of the initial system. We establish that the asymptotics for solutions of the system on this manifold defines the asymptotics for all solutions of the initial system. In the first part of this work, we propose an algorithm for an approximate construction of the critical manifold. Moreover, we establish the unique solvability for auxiliary algebraic problems that occur within the algorithm implementation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>функционально-дифференциальные уравнения</kwd><kwd>критическое многообразие</kwd><kwd>асимптотическое интегрирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>functional-differential equations</kwd><kwd>critical manifold</kwd><kwd>asymptotic integration</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">грант Президента РФ, проектная часть государственного задания в сфере научной деятельности</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Беллман Р., Кук К.Л. Дифференциально-разностные уравнения. М.: Мир, 1967. (Bellman R., Cooke K.L. Differential-Difference equations. New York: Academic Press, 1963.)</mixed-citation><mixed-citation xml:lang="en">Беллман Р., Кук К.Л. Дифференциально-разностные уравнения. М.: Мир, 1967. (Bellman R., Cooke K.L. Differential-Difference equations. New York: Academic Press, 1963.)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Нестеров П.Н. Асимптотическое интегрирование одного класса систем функционально-дифференциальных уравнений // Вестник Нижегородского университета им. Н.И. Лобачевского. 2013. №1(3). С. 137–145. [Nesterov P.N. Asimptoticheskoe integrirovanie odnogo klassa sistem funktsional’no-differentsial’nykh uravneniy // Vestnik Nizhegorodskogo universiteta imeni N.I. Lobachevskogo. 2013. №1(3). P. 137–145 (in Russian)].</mixed-citation><mixed-citation xml:lang="en">Нестеров П.Н. Асимптотическое интегрирование одного класса систем функционально-дифференциальных уравнений // Вестник Нижегородского университета им. Н.И. Лобачевского. 2013. №1(3). С. 137–145. [Nesterov P.N. Asimptoticheskoe integrirovanie odnogo klassa sistem funktsional’no-differentsial’nykh uravneniy // Vestnik Nizhegorodskogo universiteta imeni N.I. Lobachevskogo. 2013. №1(3). P. 137–145 (in Russian)].</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Нестеров П.Н. Метод усреднения в задаче асимптотического интегрирования систем с колебательно убывающими коэффициентами // Дифференциальные уравнения. 2007. Т. 43, №6. С. 731–742. (English transl.: Nesterov P.N. Averaging method in the asymptotic integration problem for systems with oscillatory-decreasing coefficients // Differ. Equ. 2007. V. 43, No. 6. P. 745–756.)</mixed-citation><mixed-citation xml:lang="en">Нестеров П.Н. Метод усреднения в задаче асимптотического интегрирования систем с колебательно убывающими коэффициентами // Дифференциальные уравнения. 2007. Т. 43, №6. С. 731–742. (English transl.: Nesterov P.N. Averaging method in the asymptotic integration problem for systems with oscillatory-decreasing coefficients // Differ. Equ. 2007. V. 43, No. 6. P. 745–756.)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Нестеров П.Н. Об асимптотике критических решений систем дифференциальных уравнений с колебательно убывающими коэффициентами // Моделирование и анализ информационных систем. 2011. Т. 18, №3. C. 21–41. (English transl.: Nesterov P.N. On asymptotics for critical solutions of systems of differential equations with oscillatory decreasing coefficients // Automatic Control and Computer Sciences. 2013. Vol. 47, No. 7. P. 500–515.)</mixed-citation><mixed-citation xml:lang="en">Нестеров П.Н. Об асимптотике критических решений систем дифференциальных уравнений с колебательно убывающими коэффициентами // Моделирование и анализ информационных систем. 2011. Т. 18, №3. C. 21–41. (English transl.: Nesterov P.N. On asymptotics for critical solutions of systems of differential equations with oscillatory decreasing coefficients // Automatic Control and Computer Sciences. 2013. Vol. 47, No. 7. P. 500–515.)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Хейл Дж. Теория функционально-дифференциальных уравнений. М.: Мир, 1984. (Hale J.K. Theory of functional differential equations. New York: Springer-Verlag, 1977.)</mixed-citation><mixed-citation xml:lang="en">Хейл Дж. Теория функционально-дифференциальных уравнений. М.: Мир, 1984. (Hale J.K. Theory of functional differential equations. New York: Springer-Verlag, 1977.)</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Ai S. Asymptotic integration of delay differential systems // J. Math. Anal. Appl. 1992. Vol. 165. P. 71–101.</mixed-citation><mixed-citation xml:lang="en">Ai S. Asymptotic integration of delay differential systems // J. Math. Anal. Appl. 1992. Vol. 165. P. 71–101.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ait Babram M., Hbid M.L., Arino O. Approximation scheme of a center manifold for functional differential equations // J. Math. Anal. Appl. 1997. Vol. 213. P. 554–572.</mixed-citation><mixed-citation xml:lang="en">Ait Babram M., Hbid M.L., Arino O. Approximation scheme of a center manifold for functional differential equations // J. Math. Anal. Appl. 1997. Vol. 213. P. 554–572.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Arino O., Gyõri I. Asymptotic integration of delay differential systems // J. Math. Anal. Appl. 1989. Vol. 138. P. 311–327.</mixed-citation><mixed-citation xml:lang="en">Arino O., Gyõri I. Asymptotic integration of delay differential systems // J. Math. Anal. Appl. 1989. Vol. 138. P. 311–327.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Arino O., Gyõri I., Pituk M. Asymptotically diagonal delay differential systems // J. Math. Anal. Appl. 1996. Vol. 204. P. 701–728.</mixed-citation><mixed-citation xml:lang="en">Arino O., Gyõri I., Pituk M. Asymptotically diagonal delay differential systems // J. Math. Anal. Appl. 1996. Vol. 204. P. 701–728.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Arino O., Hbid M.L., Ait Dads E. (Eds.) Delay differential equations and applications. Dordrecht: Springer, 2006.</mixed-citation><mixed-citation xml:lang="en">Arino O., Hbid M.L., Ait Dads E. (Eds.) Delay differential equations and applications. Dordrecht: Springer, 2006.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Balachandran B., Kalm´ar-Nagy T., Gilsinn D.E. (Eds.) Delay differential equations: recent advances and new directions. New York: Springer, 2009.</mixed-citation><mixed-citation xml:lang="en">Balachandran B., Kalm´ar-Nagy T., Gilsinn D.E. (Eds.) Delay differential equations: recent advances and new directions. New York: Springer, 2009.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Gyõri I., Pituk M. L²-Perturbation of a linear delay differential equation // J. Math. Anal. Appl. 1995. Vol. 195. P. 415–427.</mixed-citation><mixed-citation xml:lang="en">Gyõri I., Pituk M. L²-Perturbation of a linear delay differential equation // J. Math. Anal. Appl. 1995. Vol. 195. P. 415–427.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Carr J. Applications of centre manifold theory. New York: Springer-Verlag, 1981.</mixed-citation><mixed-citation xml:lang="en">Carr J. Applications of centre manifold theory. New York: Springer-Verlag, 1981.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Cassel J.S., Hou Z. Lp-Perturbation of linear functional differential equations // Monatsh. Math. 1999. Vol. 128. P. 211–226.</mixed-citation><mixed-citation xml:lang="en">Cassel J.S., Hou Z. Lp-Perturbation of linear functional differential equations // Monatsh. Math. 1999. Vol. 128. P. 211–226.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Castillo S., Pinto M. Levinson theorem for functional differential systems // Nonlinear Anal. 2001. Vol. 47. P. 3963–3975.</mixed-citation><mixed-citation xml:lang="en">Castillo S., Pinto M. Levinson theorem for functional differential systems // Nonlinear Anal. 2001. Vol. 47. P. 3963–3975.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Castillo S., Pinto M. An asymptotic theory for nonlinear functional differential equations // Comput. Math. Appl. 2002. Vol. 44. P. 763–775.</mixed-citation><mixed-citation xml:lang="en">Castillo S., Pinto M. An asymptotic theory for nonlinear functional differential equations // Comput. Math. Appl. 2002. Vol. 44. P. 763–775.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Hale J., Verduyn Lunel S.M. Introduction to functional differential equations. Appl. Math. Sciences 99. New York: Springer-Verlag, 1993.</mixed-citation><mixed-citation xml:lang="en">Hale J., Verduyn Lunel S.M. Introduction to functional differential equations. Appl. Math. Sciences 99. New York: Springer-Verlag, 1993.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Kolmanovskii V., Myshkis A. Introduction to the theory and applications of functional differential equations. Dordrecht: Kluwer Academic Publishers, 1999.</mixed-citation><mixed-citation xml:lang="en">Kolmanovskii V., Myshkis A. Introduction to the theory and applications of functional differential equations. Dordrecht: Kluwer Academic Publishers, 1999.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Nesterov P. Asymptotic integration of functional differential systems with oscillatory decreasing coefficients // Monatsh. Math. 2013. Vol. 171, No. 2. P. 217–240.</mixed-citation><mixed-citation xml:lang="en">Nesterov P. Asymptotic integration of functional differential systems with oscillatory decreasing coefficients // Monatsh. Math. 2013. Vol. 171, No. 2. P. 217–240.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Pituk M. The Hartman–Wintner theorem for functional differential equations // J. Differential Equations. 1999. Vol. 155. P. 1–16.</mixed-citation><mixed-citation xml:lang="en">Pituk M. The Hartman–Wintner theorem for functional differential equations // J. Differential Equations. 1999. Vol. 155. P. 1–16.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Pituk M. A Perron type theorem for functional differential equations // J. Math. Anal. Appl. 2006. Vol. 316. P. 24–41.</mixed-citation><mixed-citation xml:lang="en">Pituk M. A Perron type theorem for functional differential equations // J. Math. Anal. Appl. 2006. Vol. 316. P. 24–41.</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Pituk M. Asymptotic behavior and oscillation of functional differential equations // J. Math. Anal. Appl. 2006. Vol. 322. P. 1140–1158.</mixed-citation><mixed-citation xml:lang="en">Pituk M. Asymptotic behavior and oscillation of functional differential equations // J. Math. Anal. Appl. 2006. Vol. 322. P. 1140–1158.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
