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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2021-12-3-271-278</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-442</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="en"><subject>MATHEMATICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>Green’s function method for time-fractional diffusion equation on the star graph with equal bonds</article-title><trans-title-group xml:lang="ru"><trans-title>Метод функции Грина для уравнения дробной по времени диффузии на звездном графе с равными ребрами</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>Sobirov</surname><given-names>Z. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Sobirov</surname><given-names>Z. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Olimlar str., 49, 100041, Tashkent</p><p>Universitet str., 4, 100174, Tashkent</p></bio><email xlink:type="simple">z.sobirov@nuu.uz</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>Rakhimov</surname><given-names>K. U.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhimov</surname><given-names>K. U.</given-names></name></name-alternatives><bio xml:lang="en"><p>Universitet str., 4, 100174, Tashkent</p></bio><email xlink:type="simple">kamoliddin_ru@inbox.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ergashov</surname><given-names>R. E.</given-names></name><name name-style="western" xml:lang="en"><surname>Ergashov</surname><given-names>R. E.</given-names></name></name-alternatives><bio xml:lang="en"><p>Universitet str., 4, 100174, Tashkent</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>University of Geological Sciences; National University of Uzbekistan</institution><country>Uzbekistan</country></aff><aff xml:lang="en" id="aff-2"><institution>National University of Uzbekistan</institution><country>Uzbekistan</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>04</day><month>08</month><year>2025</year></pub-date><volume>12</volume><issue>3</issue><fpage>271</fpage><lpage>278</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Sobirov Z.A., Rakhimov K.U., Ergashov R.E., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Sobirov Z.A., Rakhimov K.U., Ergashov R.E.</copyright-holder><copyright-holder xml:lang="en">Sobirov Z.A., Rakhimov K.U., Ergashov R.E.</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://nanojournal.ifmo.ru/jour/article/view/442">https://nanojournal.ifmo.ru/jour/article/view/442</self-uri><abstract><p>This work devoted to construction of the Matrix-Green’s functions of initial-boundary value problems for the time-fractional diffusion equation on the metric star graph with equal bonds. In the case of Dirichlet and mixed boundary conditions we constructed Green’s functions explicitly. The uniqueness of the solutions of the considered problems were proved by the method of energy integrals. Some possible applications in branched nanostructures were discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Данная работа посвящена построению матрицы-функции Грина начально-краевых задач для уравнения дробной по времени диффузии на метрическом звездном графе с равными связями. В случае Дирихле и смешанных краевых условий функции Грина построены явно. Единственность решений рассмотренных задач доказана методом интегралов энергии. Обсуждены некоторые возможные приложения в разветвленных наноструктурах.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнение диффузии с дробным временем</kwd><kwd>ОКЗ</kwd><kwd>УЧП на метрических графах</kwd><kwd>функция Грина</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Time-fractional diffusion equation</kwd><kwd>IBVP</kwd><kwd>PDE on metric graphs</kwd><kwd>Green’s function</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">Dybiec B., Gudowska-Nowak E. Anomalous diffusion and generalized Sparre-Andersen scaling. Europhysics Letters Association, 2009, 88, P. 10003.</mixed-citation><mixed-citation xml:lang="en">Dybiec B., Gudowska-Nowak E. Anomalous diffusion and generalized Sparre-Andersen scaling. 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