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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2024-25-3-213-225</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1824</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>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Полиномы Аппеля, ассоциированные с преобразованиями Фурье, и их применение для дифференциальных уравнений</article-title><trans-title-group xml:lang="en"><trans-title>Appel polynomials associated with Fourier transforms and their applications to differential equations</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>Нижников</surname><given-names>Александр Иванович</given-names></name><name name-style="western" xml:lang="en"><surname>Nizhnikov</surname><given-names>Alexander Ivanovich</given-names></name></name-alternatives><email xlink:type="simple">nizhnikov.ai@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>Яремко</surname><given-names>Олег Эммануилович</given-names></name><name name-style="western" xml:lang="en"><surname>Yaremko</surname><given-names>Oleg Emmanuilovich</given-names></name></name-alternatives><email xlink:type="simple">yaremki8@gmail.com</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>Яремко</surname><given-names>Наталья Николаевна</given-names></name><name name-style="western" xml:lang="en"><surname>Yaremko</surname><given-names>Natalya Nikolaevna</given-names></name></name-alternatives><email xlink:type="simple">yaremki@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский педагогический государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State Pedagogical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный технический университет «Станкин»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State Technical University “Stankin”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Technological University “MISiS” (Moscow).</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>07</day><month>01</month><year>2025</year></pub-date><volume>25</volume><issue>3</issue><fpage>213</fpage><lpage>225</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нижников А.И., Яремко О.Э., Яремко Н.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Нижников А.И., Яремко О.Э., Яремко Н.Н.</copyright-holder><copyright-holder xml:lang="en">Nizhnikov A.I., Yaremko O.E., Yaremko N.N.</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://www.chebsbornik.ru/jour/article/view/1824">https://www.chebsbornik.ru/jour/article/view/1824</self-uri><abstract><p>Для одного класса полиномов Аппеля, ассоциированного с дифференциальным уравнением параболического типа, получены формулы коэффициентов разложения в ряд полиномов. Установлено, что полиномы Аппеля участвуют в формулах разложения решениязадачи Коши для уравнений параболического типа в ряд производных фундаментального решения. Предложен новый метод решения задачи Коши, суть которого состоит в применении разложения в ряды по полиномам Аппеля. Результаты обобщают метод решения уравнения теплопроводности на действительной оси разложением в ряд полиномов Эрмита. Исследована связь преобразования Фурье и рядов по ассоциированным полиномам Аппеля. Изучен вопрос применения полиномов Эрмита для преобразования Лапласа.</p></abstract><trans-abstract xml:lang="en"><p>Formulas for the coefficients of the expansion into a series of Appel polynomials associated with a differential equation of parabolic type are obtained. It has been established that Appel polynomials are involved in the formulas for the expansion of the solution to the Cauchy problem for equations of parabolic type into a series of derivatives of the fundamental solution.A new method for solving the Cauchy problem is proposed, the essence of which is to use seriesexpansion in Appel polynomials. The results generalize the method for solving the heat equationon the real axis by expanding it into a series of Hermite polynomials. The connection betweenthe Fourier transform and series in associated Appel polynomials is studied. The issue of using Hermite polynomials for the Laplace transform has been studied.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Полином Аппеля</kwd><kwd>фундаментальное решение</kwd><kwd>полином Эрмита</kwd><kwd>преобразование Фурье</kwd><kwd>задача Коши.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Appel polynomial</kwd><kwd>fundamental solution</kwd><kwd>Hermite polynomial</kwd><kwd>Fourier transform</kwd><kwd>Cauchy problem.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Министерства науки и высшего образования Российской Федерации (проект № FSFS-2024-0007).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Владимиров В. С., Вашарин А.А., Каримова Х.Х., Михайлов В. П. , Сидоров Ю.В., Шабунин М. И. Сборник задач по уравнениям математической физики / Под ред. В.С. 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