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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">41390</article-id><article-id pub-id-type="doi">10.22363/2658-4670-2024-32-2-222-233</article-id><article-id pub-id-type="edn">CDJVIL</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Well-posedness of the microwave heating problem</article-title><trans-title-group xml:lang="ru"><trans-title>Корректность задачи о микроволновом нагреве</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3331-2516</contrib-id><name-alternatives><name xml:lang="en"><surname>Tsangia</surname><given-names>Baljinnyam</given-names></name><name xml:lang="ru"><surname>Цангиа</surname><given-names>Балжинням</given-names></name></name-alternatives><bio xml:lang="en"><p>Dr.rer.nat, Lecturer of Department of Mathematics, School of Applied Sciences, Mongolian University of Science and Technology</p></bio><email>Baljinnyam.Tsangia@must.edu.mn</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Mongolian University of Science and Technology</institution></aff><aff><institution xml:lang="ru">Монгольский университет науки и технологий</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2024</year></pub-date><volume>32</volume><issue>2</issue><issue-title xml:lang="en">VOL 32, NO2 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 32, №2 (2024)</issue-title><fpage>222</fpage><lpage>233</lpage><history><date date-type="received" iso-8601-date="2024-11-01"><day>01</day><month>11</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Tsangia B.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Цангиа Б.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Tsangia B.</copyright-holder><copyright-holder xml:lang="ru">Цангиа Б.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/41390">https://journals.rudn.ru/miph/article/view/41390</self-uri><abstract xml:lang="en"><p style="text-align: justify;">A number of initial boundary-value problems of classical mathematical physics is generally represented in the linear operator equation and its well-posedness and causality in a Hilbert space setting was established. If a problem has a unique solution and the solution continuously depends on given data, then the problem is called well-posed. The independence of the future behavior of a solution until a certain time indicates the causality of the solution. In this article, we established the well-posedness and causality of the solution of the evolutionary problems with a perturbation, which is defined by a quadratic form. As an example, we considered the coupled system of the heat and Maxwell’s equations (the microwave heating problem).</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Ряд начально-краевых задач классической математической физики формулируется в виде линейного операторного уравнения, а его корректность и причинность в гильбертовом пространстве были установлены ранее. Если задача имеет единственное решение и решение постоянно зависит от заданных параметров, то задача называется корректной. Независимость дальнейшего поведения решения до определенного момента указывает на причинность решения. В данной работе установлены корректность и причинность решения эволюционных задач с возмущением, определяемым квадратичной формой. В качестве примера рассмотрена связанная система уравнений теплопроводности и Максвелла (задача микроволнового нагрева).</p></trans-abstract><kwd-group xml:lang="en"><kwd>evolutionary problems</kwd><kwd>nonlinear perturbation</kwd><kwd>Lipschitz continuous</kwd><kwd>quadratic form</kwd><kwd>coupled problems</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Эволюционные задачи</kwd><kwd>нелинейное возмущение</kwd><kwd>Липшицева непрерывность</kwd><kwd>квадратичная форма</kwd><kwd>связанные задачи</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Hill, J. M. &amp; Marchant, T. R. Modelling microwave heating. Appl. Math. 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