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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">izvuzmath</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3446</issn><issn pub-type="epub">2076-4626</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/0021-3446-2023-12-3-16</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-29</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></article-categories><title-group><article-title>Задача определения ядра типа свертки в уравнении Мура–Гибсона–Томсона третьего порядка</article-title><trans-title-group xml:lang="en"><trans-title>Convolution kernel determination problem in the third order Moore–Gibson–Thompson equation</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>Дурдиев</surname><given-names>Д. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Durdiev</surname><given-names>D. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дурдимурод Каландарович Дурдиев</p><p>ул. Университетская, д. 46, г. Ташкент, 100170; ул. М. Икбол, д. 11, г. Бухара, 200118</p></bio><bio xml:lang="en"><p>Durdimurod Kalandarovich Durdiev</p><p>46 University str., Tashkent, 100170; 11 Muhammad Ikbal str., Bukhara, 200118</p></bio><email xlink:type="simple">durdiev65@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>Болтаев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Boltaev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аслиддин Аскар угли Болтаев</p><p>ул. Университетская, д. 46, г. Ташкент, 100170; ул. М. Икбол, д. 11, г. Бухара, 200118</p></bio><bio xml:lang="en"><p>Asliddin Askar ugli Boltaev</p><p>46 University str., Tashkent, 100170; 11 Muhammad Ikbal str., Bukhara, 200118</p></bio><email xlink:type="simple">asliddinboltayev@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>Рахмонов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rahmonov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аскар Ахмадович Рахмонов</p><p>ул. Университетская, д. 46, г. Ташкент, 100170; ул. М. Икбол, д. 11, г. Бухара, 200118</p></bio><bio xml:lang="en"><p>Askar Ahmadovich Rahmonov</p><p>46 University str., Tashkent, 100170; 11 Muhammad Ikbal str., Bukhara, 200118</p></bio><email xlink:type="simple">araxmonov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики им. В.И. Романовского Академии наук Республики Узбекистан; Бухарский государственный университет</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>Institute of Mathematics at the Academy of Sciences of the Republic of Uzbekistan; Bukhara State University</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>23</day><month>12</month><year>2023</year></pub-date><volume>1</volume><issue>12</issue><fpage>3</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дурдиев Д.К., Болтаев А.А., Рахмонов А.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Дурдиев Д.К., Болтаев А.А., Рахмонов А.А.</copyright-holder><copyright-holder xml:lang="en">Durdiev D.K., Boltaev A.A., Rahmonov A.A.</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://izvuzmath.elpub.ru/jour/article/view/29">https://izvuzmath.elpub.ru/jour/article/view/29</self-uri><abstract><p>Исследуется обратная задача определения функции ядра g(t) в уравнении Мура– Гибсона–Томсона (МГТ) третьего порядка. Во-первых, начально-краевая задача сводится к эквивалентной задаче. С помощью спектрального метода Фурье эквивалентная задача сводится к системе интегральных уравнений. Доказаны существование и единственность решения интегральных уравнений. Полученное решение интегральных уравнений типа Вольтерра является единственным решением эквивалентной задачи. На основе эквивалентности задач доказывается теорема существования и единственности классических решений исходной обратной задачи.</p></abstract><trans-abstract xml:lang="en"><p>This article is concerned with the study of the inverse problem of determining the difference kernel in a Volterra type integral term function in the third-order Moore–Gibson–Thompson (MGT) equation. First, the initial-boundary value problem is reduced to an equivalent problem. Using the Fourier spectral method, the equivalent problem is reduced to a system of integral equations. The existence and uniqueness of the solution to the integral equations are proved. The obtained solution to the integral equations of Volterra-type is also the unique solution to the equivalent problem. Based on the equivalence of the problems, the theorem of the existence and uniqueness of the classical solutions of the original inverse problem is proved. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>уравнение МГТ</kwd><kwd>начально-краевая задача</kwd><kwd>обратная задача</kwd><kwd>существование</kwd><kwd>единственность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>mgt equation</kwd><kwd>initial-boundary value problem</kwd><kwd>inverse problem</kwd><kwd>existence</kwd><kwd>uniqueness</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа второго автора выполнена при поддержке Минобрнауки России, соглашение № 075-02-2023-914</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">Kaltenbacher B., Lasiecka I., Marchand R. 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