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<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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2021-22-5-16-24</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1157</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>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Об одной задаче Коши с периодическими начальными условиями</article-title><trans-title-group xml:lang="en"><trans-title>On a Cauchy problem with periodic initial values</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>Архипова</surname><given-names>Людмила Геннадьевна</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhipova</surname><given-names>Ludmila Gennad’evna</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук</p></bio><bio xml:lang="en"><p>candidate of physical and mathematical sciences</p></bio><email xlink:type="simple">arhipova@mi-ras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чубариков</surname><given-names>Владимир Николаевич</given-names></name><name name-style="western" xml:lang="en"><surname>Chubarikov</surname><given-names>Vladimir Nikolaevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences, professor</p></bio><email xlink:type="simple">chubarik2020@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>17</day><month>01</month><year>2022</year></pub-date><volume>22</volume><issue>5</issue><fpage>16</fpage><lpage>24</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Архипова Л.Г., Чубариков В.Н., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Архипова Л.Г., Чубариков В.Н.</copyright-holder><copyright-holder xml:lang="en">Arkhipova L.G., Chubarikov V.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.chebsbornik.ru/jour/article/view/1157">https://www.chebsbornik.ru/jour/article/view/1157</self-uri><abstract><p>В данной работе дано применение метода тригонометрических сумм к исследованию решений уравнений в частных производных. В начале понижается размерность задачи спомощью метода разделения переменных. При этом задача сводится к системе обыкновенных дифференциальных уравнений, что позволяет использовать анализ Фурье.</p></abstract><trans-abstract xml:lang="en"><p>In the paper, the method of exponential sums is applied to the solution of partial differential equation. At the initial step, the authors decrease the dimension of the problem by separation ofvariables. Thus the initial problem reduses to the system of the ordinary differential equations.This allows one to use Fourier analysis.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>волновое уравнение</kwd><kwd>уравнение Гельмгольца</kwd><kwd>метод разделения пере- менных</kwd><kwd>анализ Фурье.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>the wave equation</kwd><kwd>Helmgoltz equation</kwd><kwd>the separation of varuales method</kwd><kwd>the Fourier analysis.</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">МиллерУ. Симметрия и разделение переменных. — М.: Мир. 1981, 342 с.</mixed-citation><mixed-citation xml:lang="en">Miller W.,Jr. 1980. The method of trigonometric sums in the theory of numbers. 2nd Edition., correct.and supplement. — Moscow.: Fizmatlit. pp. 144.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Виноградов И. М. Особые варианты метода тригонометрических сумм. — М.: Физматлит. 1976, 144 с.</mixed-citation><mixed-citation xml:lang="en">Vinogradov I. M. 1976. Special variants of the trigonometrical sums method. — M.: Fizmatlit, pp. 144.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">КурантР. Уравнения с частными производными — М.: Мир. 1964, 830 с.</mixed-citation><mixed-citation xml:lang="en">Courant R. 1964. Equations with partitial derivatives. — M.: Mir ,pp. 830.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Hua Loo-Keng. Selected Papers. — N.-Y.,Heidelberg, Berlin, 1983. pp.888.</mixed-citation><mixed-citation xml:lang="en">Hua Loo-Keng. 1983. Selected Papers. — N.-Y.,Heidelberg, Berlin, pp.888.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Архипов Г. И. Избранные труды. — Орёл: Изд-во Орловского ун-та, 2013, 464 с.</mixed-citation><mixed-citation xml:lang="en">Arkhipov G. I., 2013. Selected papers. — Orjol: Publ.House of the Orjol University, pp. 464.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Архипов Г. И., Садовничий В. А., Чубариков В. Н. Лекции по математическому анализу. 4-е изд., испр. — М.: Дрофа. 2004, 640 с.</mixed-citation><mixed-citation xml:lang="en">Arkhipov G. I.„ Sadovnichii V. A., Chubarikov V. N. 2004. Lecture on mathematical analysis. 4th Ed., corr. — M.: Drofa. pp. 640.</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>
