<?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">mathnas</journal-id><journal-title-group><journal-title xml:lang="ru">Труды Института математики НАН Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Institute of Mathematics of the NAS of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1812-5093</issn><publisher><publisher-name>Институт математики НАН Беларуси</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.67268/1812-5093-2026-34-1-56-67</article-id><article-id custom-type="edn" pub-id-type="custom">FEQFZF</article-id><article-id custom-type="elpub" pub-id-type="custom">mathnas-139</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>ВЕЩЕСТВЕННЫЙ, КОМПЛЕКСНЫЙ И ФУНКЦИОНАЛЬНЫЙ АНАЛИЗ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>REAL, COMPLEX AND FUNCTIONAL ANALYSIS</subject></subj-group></article-categories><title-group><article-title>Явное решение дифференциальных краевых задач типа задачи Римана</article-title><trans-title-group xml:lang="en"><trans-title>Explicit solution of differential boundary value problems such as the Riemann problem</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>Минск</p></bio><bio xml:lang="en"><p>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>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2026</year></pub-date><volume>34</volume><issue>1</issue><fpage>56</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шилин А.П., 2026</copyright-statement><copyright-year>2026</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://mathnas.ejournal.by/jour/article/view/139">https://mathnas.ejournal.by/jour/article/view/139</self-uri><abstract><p>На замкнутой кривой, расположенной на комплексной плоскости, изучаются обобщенные краевые задачи Римана. В краевое условие задач наряду с предельными значениями искомых функций входят предельные значения их производных. Краевое условие записывается с помощью определителей, близких к определителям Вронского. Решение задач сводится к решению классической задачи Римана и решению линейных дифференциальных уравнений в областях комплексной плоскости с некоторыми ограничениями на решения. Явно указываются условия разрешимости исходных задач, при их выполнении приводятся явные формулы решений. Приведены примеры.</p></abstract><trans-abstract xml:lang="en"><p>Generalized Riemann boundary problems are studied on a closed curve located on the complex plane. The boundary condition of the problems, along with the limit values of the desired functions, includes the limit values of their derivatives. The boundary conditions is written using determinants close to Vronsky's determinants. The solution of the problems is reduced to solving the classical Riemann problem and solving linear differential equations in areas of the complex plane with some restrictions on the solutions. The conditions for the solvability of the initial problems are indicated explicitly, and when they are fulfilled, explicit formulas for solutions are indicated. Examples are given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>краевая задача Римана</kwd><kwd>линейные дифференциальные уравнения</kwd><kwd>метод вариации постоянных</kwd><kwd>обобщенные формулы Сохоцкого</kwd><kwd>определители</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Riemann boundary value problem</kwd><kwd>linear differential equations</kwd><kwd>method of variation of constants</kwd><kwd>generalized formulas of Sokhotsky</kwd><kwd>determinants</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">Гахов Ф. Д. Краевые задачи. М.: Наука, 1977.</mixed-citation><mixed-citation xml:lang="en">Gakhov F. D. Boundary Value Problems. Moscow, Nauka, 1977 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Мусхелишвили Н. И. Сингулярные интегральные уравнения. М.: Наука, 1968.</mixed-citation><mixed-citation xml:lang="en">Muskhelishvili N. I. Singular Integral Equations. Moscow, Nauka, 1968 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Крикунов Ю. М. О решении обобщенной краевой задачи Римана и линейного сингулярного интегро-дифференциального уравнения // Ученые записки Казанского университета. 1952. T. 112, № 10. С. 191–199.</mixed-citation><mixed-citation xml:lang="en">Krikunov Yu. M. On the solution of the generalized Riemann boundary value problem and the linear singular integro-differential equation. Scientific Notes Kazan University, 1952, vol. 112, no. 10, pp. 191–199 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Шилин А. П. Дифференциальная краевая задача Римана и ее приложение к интегро-дифференциальным уравнениям // Доклады Национальной академии наук Беларуси. 2019. Т. 63, № 4. С. 391–397. https://doi.org/10.29235/1561-8323-2019-63-4-391-397</mixed-citation><mixed-citation xml:lang="en">Shilin A. P. Riemann’s differential boundary-value problem and its application to integrodifferential equations. Doklady of the National Academy of Sciences of Belarus, 2019, vol. 63, no. 4, pp. 391–397 (in Russian). https://doi.org/10.29235/1561-8323-2019-63-4-391-397</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Шилин А. П. Гиперсингулярное интегро-дифференциальное уравнение с линейными функциями в коэффициентах // Весцi Нацыянальнай акадэмii навук Беларусi. Серыя фiзiка-матэматычных навук. 2022. Т. 58, № 4. С. 358–369. https://doi.org/10.29235/1561-2430-2022-58-4-358-369</mixed-citation><mixed-citation xml:lang="en">Shilin A. P. A hypersingular integro-differential equation with linear functions in coefficients. Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series, 2022, vol. 58, no. 4, pp. 358–369 (in Russian). https://doi.org/10.29235/1561-2430-2022-58-4-358-369</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Зверович Э. И. Обобщение формул Сохоцкого // Весцi Нацыянальнай акадэмii навук Беларусi. Серыя фiзiка-матэматычных навук. 2012. № 2. С. 24–28.</mixed-citation><mixed-citation xml:lang="en">Zverovich E. I. Generalization of Sokhotsky formulas. Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series, 2012, no. 2, pp. 24–28 (in Russian).</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>
