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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-2430-2021-57-3-263-273</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-595</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>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>Об одном подходе к решению смешанных задач теории упругости</article-title><trans-title-group xml:lang="en"><trans-title>On one approach to the solution of miscellaneous problems of the theory of elasticity</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>Амелькин</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Amel’kin</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Амелькин Владимир Васильевич – доктор физико-математических наук, профессор, профессор кафедры дифференциальных уравнений и системного анализа</p><p>пр.  Независимости, 4, 220030, г. Минск</p></bio><bio xml:lang="en"><p>Vladimir V. Amel’kin – Dr. Sc. (Physics and Mathematics), Professor, Professor of the Department of  Diﬀerential Equations and Systemic Analysis</p><p>4, Nezavisimosti Ave, 220030, Minsk</p></bio><email xlink:type="simple">vamlkn@mail.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>Василевич</surname><given-names>М. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vasilevich</surname><given-names>M. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Василевич Михаил Николаевич – кандидат физико-математических наук, доцент кафедры общей математики и информатики</p><p>пр. Независимости, 4, 220030, г. Минск</p></bio><bio xml:lang="en"><p>Michail N. Vasilevich – Ph. D. (Physics and Mathematics), Associate Professor of the Department of General Mathematics and Informatics</p><p>4, Nezavisimosti Ave, 220030, Minsk</p></bio><email xlink:type="simple">vasilevich.m@gmail.com</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>Хвощинская</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khvostchinskaya</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хвощинская Людмила Аркадьевна – кандидат физико-математических наук, доцент кафедры высшей математики</p><p>пр. Независимости,  99, 220023, г. Минск</p></bio><bio xml:lang="en"><p>Ludmila A. Khvostchinskaya – Ph. D. (Physics and Mathematics), Associate Professor of the Department of Higher Mathematics</p><p>99, Nezavisimosti Ave, 220023, Minsk</p></bio><email xlink:type="simple">ludmila.ark@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный аграрный технический университет</institution></aff><aff xml:lang="en"><institution>Belarusian State Agrarian Technical University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>06</day><month>10</month><year>2021</year></pub-date><volume>57</volume><issue>3</issue><fpage>263</fpage><lpage>273</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Амелькин В.В., Василевич М.Н., Хвощинская Л.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Амелькин В.В., Василевич М.Н., Хвощинская Л.А.</copyright-holder><copyright-holder xml:lang="en">Amel’kin V.V., Vasilevich M.N., Khvostchinskaya L.A.</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://vestifm.belnauka.by/jour/article/view/595">https://vestifm.belnauka.by/jour/article/view/595</self-uri><abstract><p>Рассмотрена смешанная контактная задача теории упругости в верхней полуплоскости. Границей является действительная полуось, разделенная на четыре части, на каждой из которых заданы граничные условия для действительной или мнимой части двух искомых аналитических функций. С помощью новых неизвестных функций задача сведена к неоднородной краевой задаче Римана с 2 × 2 кусочно-постоянной матрицей и четырьмя особыми точками. Построено дифференциальное уравнение класса Фукса с четырьмя особыми точками, матрицы-вычеты которого найдены «методом логарифмирования» произведения матриц. Единственное решение задачи выражено через интегралы типа Коши при выполнении одного условия разрешимости.</p></abstract><trans-abstract xml:lang="en"><p>Herein, a miscellaneous contact problem of the theory of elasticity in the upper half-plane is considered. The boundary is a real semi-axis separated into four parts, on each of which the boundary conditions are set for the real or imaginary part of two desired analytical functions. Using new unknown functions, the problem is reduced to an inhomogeneous Riemann boundary value problem with a piecewise constant 2 × 2 matrix and four singular points. A diﬀerential equation of the Fuchs class with four singular points is constructed, the residue matrices of which are found by the logarithm method of the product of matrices. The single solution of the problem is represented in terms of Cauchy-type integrals when the solvability condition is met.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>смешанная задача теории упругости</kwd><kwd>краевая задача Римана</kwd><kwd>проблема Римана</kwd><kwd>группа монодромии</kwd><kwd>каноническая матрица</kwd><kwd>метод логарифмирования</kwd></kwd-group><kwd-group xml:lang="en"><kwd>miscellaneous problem of the theory of elasticity</kwd><kwd>Riemann boundary value problem</kwd><kwd>Riemann problem</kwd><kwd>monodromy group</kwd><kwd>canonical matrix</kwd><kwd>logarithm method</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">Мусхелишвили, Н. И. Некоторые основные задачи математической теории упругости / Н. И. Мусхелишвили. – М.: Наука, 1966. – 709 с.</mixed-citation><mixed-citation xml:lang="en">Мuskhelishvili N. I. 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