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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">10.29235/1561-2430-2024-60-2-117-131</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-779</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>Гиперсингулярное интегро-дифференциальное уравнение с квадратичными функциями в коэффициентах</article-title><trans-title-group xml:lang="en"><trans-title>Hypersingular integro-differential equation with quadratic functions in coefficients</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>Шилин</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Shilin</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шилин Андрей Петрович – кандидат физико-математических наук, доцент, доцент кафедры высшей математики и математической физики</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Andrey P. Shilin – Ph. D. (Physics and Mathematics), Associate Professor, Associate Professor of the Department of Higher Mathematics and Mathematical Physics</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">a.p.shilin@gmail.com</email><xref ref-type="aff" rid="aff-1"/></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><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2024</year></pub-date><volume>60</volume><issue>2</issue><fpage>117</fpage><lpage>131</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шилин А.П., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Шилин А.П.</copyright-holder><copyright-holder xml:lang="en">Shilin A.P.</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/779">https://vestifm.belnauka.by/jour/article/view/779</self-uri><abstract><p>Исследовано новое линейное интегро-дифференциальное уравнение порядка n ≥ 3, заданное на замкнутой кривой, расположенной в комплексной плоскости. Интегралы в уравнении понимаются в смысле конечной части по Адамару. Характерной особенностью уравнения является наличие в его коэффициентах квадратичных функций специального вида. Уравнение сводится вначале к краевой задаче линейного сопряжения для аналитических функций. В случае ее разрешимости следует далее решать два линейных дифференциальных уравнения в областях комплексной плоскости с некоторыми дополнительными условиями на решение. Явно указаны все условия разрешимости исходного уравнения. При их выполнении искомое решение построено в замкнутой форме. Приведен пример.</p></abstract><trans-abstract xml:lang="en"><p>A new linear integro-differential equation of order n ≥ 3, given on a closed curve located in the complex plane, is investigated. Integrals in the equation are understood in the sense of the finite part according to Hadamard. A characteristic feature of the equation is the presence of quadratic functions of a special kind in its coefficients. The equation is reduced first to the boundary value problem of linear conjugation for analytical functions. In the case of its solvability, two linear differential equations should be further solved in the domains of the complex plane with some additional conditions for the solution. All conditions for the solvability of the original equation are explicitly specified. When they are executed, the desired solution is constructed in a closed form. An example is given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>интегро-дифференциальное уравнение</kwd><kwd>гиперсингулярный интеграл</kwd><kwd>краевая задача Римана</kwd><kwd>линейное дифференциальное уравнение</kwd><kwd>определитель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>integro-differential equation</kwd><kwd>hypersingular integral</kwd><kwd>Riemann boundary problem</kwd><kwd>linear differential equation</kwd><kwd>determinant</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">Зверович, Э. И. Решение гиперсингулярного интегро-дифференциального уравнения с постоянными коэффициентами / Э. И. Зверович // Докл. Нац. акад. наук Беларуси. – 2010. – T. 54, № 6. – С. 5–8.</mixed-citation><mixed-citation xml:lang="en">Zverovich E. I. Solution of the hypersingular integro-differential equation with constant coefficients. 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