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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">matmess</journal-id><journal-title-group><journal-title xml:lang="ru">Математические заметки СВФУ</journal-title><trans-title-group xml:lang="en"><trans-title>Mathematical notes of NEFU</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2411-9326</issn><issn pub-type="epub">2587-876X</issn><publisher><publisher-name>Северо-Восточный федеральный университет имени М.К. Аммосова</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25587/2411-9326-2023-4-12-23</article-id><article-id custom-type="elpub" pub-id-type="custom">matmess-45</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>МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>Нелокальные задачи с интегрально-возмущенным условием А. А. Самарского для квазипараболических уравнений третьего порядка</article-title><trans-title-group xml:lang="en"><trans-title>Nonlocal problems with an integrally-disturbed A. A. Samarskii condition for third order quasi-parabolic 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>Кожанов</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozhanov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кожанов Александр Иванович</p><p>пр. Академика Коптюга, 4, Новосибирск 630090</p></bio><bio xml:lang="en"><p>Aleksandr I. Kozhanov4 Koptyug Avenue, 630090 Novosibirsk</p></bio><email xlink:type="simple">kozhanov@math.nsc.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>Хромченко</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Khromchenko</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хромченко Дмитрий Сергеевичул. Пирогова, 1, Новосибирск 630090</p></bio><bio xml:lang="en"><p>Dmitrii S. Khromchenko1 Pirogov Street, 630090 Novosibirsk</p></bio><email xlink:type="simple">dmtrkh12144@vk.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики им. С. Л. Соболева СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Sobolev Institute of Mathematics</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Новосибирский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2023</year></pub-date><volume>30</volume><issue>4</issue><fpage>12</fpage><lpage>23</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кожанов А.И., Хромченко Д.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Кожанов А.И., Хромченко Д.С.</copyright-holder><copyright-holder xml:lang="en">Kozhanov A.I., Khromchenko D.S.</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://matmess.elpub.ru/jour/article/view/45">https://matmess.elpub.ru/jour/article/view/45</self-uri><abstract><p>Изучается разрешимость в анизотропных пространствах С. Л. Соболева нелокальных краевых задач для квазипараболических уравнений третьего порядка с интегрально-возмущенным условием А. А. Самарского. Доказываются теоремы существования и единственности регулярных решений (т. е. решений, имеющих все обобщенные по С. Л. Соболеву производные, входящие в уравнение).</p></abstract><trans-abstract xml:lang="en"><p> We study the solvability in anisotropic Sobolev spaces of nonlocal boundary problems for the third order quasi-parabolic equations with an integrally-disturbed Samarskii condition. A uniqueness and existence theorem is proved for regular solutions (i. e. the solutions that have all generalized derivatives that were used in equation).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>квазипараболические уравнения</kwd><kwd>нелокальные задачи</kwd><kwd>условия А. А. Самарского</kwd><kwd>регулярные решения</kwd><kwd>существование</kwd><kwd>единственность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quasi-parabolic equations</kwd><kwd>nonlocal problems</kwd><kwd>Samarsky condition</kwd><kwd>regular solution</kwd><kwd>existence</kwd><kwd>uniqueness</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках госзадания Института математики им. С. Л. Соболева СО РАН (проект FWNF–2022–0008).</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">Ионкин Н.И.Решение одной краевой задачи теории теплопроводности с неклассическим краевым условием. Дифференц. уравнения. 1977. Т. 13, № 2. С. 294–304.</mixed-citation><mixed-citation xml:lang="en">Ionkin N. I., “Solution of a boundary value problem of heat conduction theory with a non-classical boundary condition,” Differents. 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