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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">asu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Атырауского университета имени Халела Досмухамедова</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of the Khalel Dosmukhamedov Atyrau University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2077-0197</issn><issn pub-type="epub">2790-332X</issn><publisher><publisher-name>Атырауский университет имени Халела Досмухамедова</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47649/vau.2020.v59.i4.18</article-id><article-id custom-type="elpub" pub-id-type="custom">asu-454</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>ФИЗИКО-МАТЕМАТИЧЕСКИЕ И ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL, MATHEMATICAL AND TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ПРЕОБРАЗОВАНИЕ КРАЕВОЙ ЗАДАЧИ НА ГРАФЕ В КРАЕВУЮ ЗАДАЧУ ДЛЯ СИСТЕМЫ</article-title><trans-title-group xml:lang="en"><trans-title>TRANSFORMATION OF A BOUNDARY VALUE PROBLEM ON A GRAPH INTO A BOUNDARY VALUE PROBLEM FOR A SYSTEM</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>Жақатай</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhakatay</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>2nd year Magistracy student in speciality 7M05401-Mathematics and Computer sciences</p><p>060011, Atyrau, Kazakhstan</p></bio><bio xml:lang="en"><p> 2nd year Magistracy student in speciality 7M05401-Mathematics and Computer sciences</p><p>060011, Atyrau </p></bio><email xlink:type="simple">j.y.s.96@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>Шаждекеева</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shazhdekeeva</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p> candidate of physical and mathematical sciences, head of a department</p><p>060011, Atyrau, Kazakhstan</p></bio><bio xml:lang="en"><p> candidate of physical and mathematical sciences, head of a department</p><p>060011, Atyrau </p></bio><email xlink:type="simple">shazhdekeeva@asu.edu.kz</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>Раисов</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Raissov</surname><given-names>A. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>1st year Magistracy student in speciality 7M05401-Mathematics and Computer sciences</p><p>060011, Atyrau, Kazakhstan, e-mail: </p></bio><bio xml:lang="en"><p> 1st year Magistracy student in speciality 7M05401-Mathematics and Computer sciences</p><p>060011, Atyrau </p></bio><email xlink:type="simple">raissovadilet@gmail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Atyrau University named after Kh.Dosmukhamedov<country>Казахстан</country></aff><aff xml:lang="en">Atyrau University named after Kh.Dosmukhamedov<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>17</day><month>10</month><year>2021</year></pub-date><volume>59</volume><issue>4</issue><fpage>126</fpage><lpage>132</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Жақатай Е.С., Шаждекеева Н.К., Раисов А.Б., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Жақатай Е.С., Шаждекеева Н.К., Раисов А.Б.</copyright-holder><copyright-holder xml:lang="en">Zhakatay E.S., Shazhdekeeva N.K., Raissov A.B.</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://asu.ejournal.kz/jour/article/view/454">https://asu.ejournal.kz/jour/article/view/454</self-uri><abstract><p>Дифференциальные уравнения, встречающиеся в разных приложениях, могут быть интерпретированы как уравнения в графах. Есть веские основания утверждать, что теория таких уравнений может применяться в широких масштабах, и свойства графа могут быть использованы для создания качественной теории таких уравнений и методов их решения. Используя простые свойства графов, мы можем изучить действие решений дифференциальных уравнений.Первая графовая модель использовалась в химии. Развитие теории дифференциальных операторов в графах произошло в последнее время, большая часть исследований в этой области проводится в последние два десятилетия. Дифференциальные операторы в графах появились в химии, физике и технике (нанотехнологии) и представляют математический интерес. Приложения дифференциальных операторов в графах включают теорию свободных электронов сопряженных молекул в химии, квантовые проволоки и квантовый хаос, теорию рассеяния и фотонные кристаллы.Многие функциональные пространства определены на графиках. Используя пространство этих функций и дифференциальных систем, мы определяем краевые задачи в графах. В данной статье мы рассматриваем преобразование краевой задачи на графе в краевую задачу для дифференциальной системы.Для этого мы преобразовали каждую грань графа в интервал (0, 1) и переопределили дифференциальное уравнение на графе. Затем мы изменили граничные условия в соответствии с интервалом и установили связь между исходной краевой задачей и вновь полученной краевой задачей.</p></abstract><trans-abstract xml:lang="en"><p>Differential equations found in different applications, can be interpreted as equations in graphs. There is good reason to argue that the theory of such equations can be applied on a large scale, and on the other hand, the properties of the graph can be used to create a qualitative theory of such equations and methods for solving them. The first graph model was used in chemistry. The development of the theory of differential operators in graphs has occurred recently, most of the research in this area has been carried out in the last two decades.Differential operators in graphs appeared in chemistry, physics and engineering (nanotechnology) and are of mathematical interest. Applications of differential operators in graphs include the theory of free electrons of conjugated molecules in chemistry, quantum wires and quantum chaos, scattering theory, and photonic crystals.Many function spaces are defined on graphs. Using these spaces of functions and differential systems, we define boundary value problems in graphs. In this article, we consider the transformation of a boundary value problem on a graph into a boundary value problem for a differential system. To do this, we have transformed each edge of the graph into the interval (0, 1) and redefined the differential equation on the graph. Then we changed the boundary conditions in accordance with the interval and established a connection between the original boundary value problem and the newly obtained boundary value problem.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>граф</kwd><kwd>дифференциальное уравнение</kwd><kwd>краевая задача</kwd><kwd>дифференциальный оператор</kwd><kwd>самосопряженный оператор</kwd><kwd>собственное значение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>graph</kwd><kwd>differential equation</kwd><kwd>boundary value problem</kwd><kwd>differential operator</kwd><kwd>self-adjoint operator</kwd><kwd>eigenvalue</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">Оре О. Теория графов. – М.: Наука. Гл. ред. физ.-мат. лит., 1980. – 336 с.</mixed-citation><mixed-citation xml:lang="en">Ore O. Teorija grafov. – M.: Nauka. 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