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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">kaz29</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Казахстанско-Британского технического университета</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of the Kazakh-British Technical University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6688</issn><issn pub-type="epub">2959-8109</issn><publisher><publisher-name>Казахстанско-Британский Технический Университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55452/1998-6688-2025-22-1-239-246</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz29-1749</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>МАТЕМАТИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ЗАДАЧА ТИПА ДИРИХЛЕ ДЛЯ СИСТЕМЫ НЕЛИНЕЙНЫХ УРАВНЕНИЙ БЕЛЬТРАМИ С СИНГУЛЯРНОЙ ТОЧКОЙ</article-title><trans-title-group xml:lang="en"><trans-title>DIRICHLET TYPE PROBLEM FOR THE SYSTEM OF NONLINEAR BELTRAMI EQUATIONS WITH SINGULAR POINT</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4820-2264</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кушербаева</surname><given-names>У. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kusherbayeva</surname><given-names>U.</given-names></name></name-alternatives><bio xml:lang="ru"><p> к.ф.-м.н., ст. преподаватель </p><p> г. Алматы </p></bio><bio xml:lang="en"><p> Candidate of Physical and Mathematical Sciences, Senior Lecturer </p><p> Almaty </p></bio><email xlink:type="simple">ulbyke1970@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Казахский национальный университет им. аль-Фараби<country>Казахстан</country></aff><aff xml:lang="en">Al-Farabi Kazakh National University<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>03</month><year>2025</year></pub-date><volume>22</volume><issue>1</issue><fpage>239</fpage><lpage>246</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кушербаева У.Р., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кушербаева У.Р.</copyright-holder><copyright-holder xml:lang="en">Kusherbayeva U.</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://vestnik.kbtu.edu.kz/jour/article/view/1749">https://vestnik.kbtu.edu.kz/jour/article/view/1749</self-uri><abstract><p>В статье рассматривается система нелинейных уравнений Бельтрами первого порядка с сингулярной точкой в угловой неограниченной области комплексной плоскости. Эта система уравнений используется в теории поверхностей положительной бесконечно малой кривизны с точкой плотности и для построения изометрических узловых координат на поверхностях положительной кривизны с точкой плотности. В данной работе для этой системы уравнений получено достаточное условие решения задачи типа Дирихле в пространстве непрерывных функций. Для этого воспользуемся общим решением системы соответствующих линейных эллиптических дифференциальных уравнений с сингулярной точкой. Доказательство существования непрерывных решений задачи Дирихле основано на принципе неподвижной точки Шаудера.</p></abstract><trans-abstract xml:lang="en"><p>In this paper we consider a system of first order nonlinear Beltrami equations with singular point in the angular unbounded region of the complex plane. This system of equations is used in the theory of surfaces of positive infinitesimal curvature with a density point and for the construction of isometric nodal coordinates on surfaces of positive curvature with a density point. In this paper, for this system of equations we obtain sufficient condition for the solution of the Dirichlet type problem in the space of continuous functions. For this purpose, we will use the general solution of the system of corresponding linear elliptic differential equations with singular point. The proof of existence of continuous solutions of the Dirichlet problem is based on the Schauder fixed point principle.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>задача Дирихле</kwd><kwd>уравнение Бельтрами</kwd><kwd>эллиптическая система</kwd><kwd>нелинейное уравнение</kwd><kwd>неограниченная область</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Dirichlet problem</kwd><kwd>Beltrami equation</kwd><kwd>elliptic system</kwd><kwd>nonlinear equation</kwd><kwd>unbounded domain</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">Радон И. О краевых задачах для логарифмического потенциала // УМН. –1946. – Т. 1. – № 3–4(13–4). – С. 96–124.</mixed-citation><mixed-citation xml:lang="en">Radon I. (1946) On boundary value problems for a logarithmic potential. UMN, vol. 1, no. 3–4(13–4), pp. 96–124. 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