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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">10.26907/0021-3446-2025-2-79-90</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-165</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 со свободной границей для системы параболических уравнений типа реакция-диффузия</article-title><trans-title-group xml:lang="en"><trans-title>Free boundary problem for a system of parabolic equations of the reaction-diffusion type</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>Расулов</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Rasulov</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Расулов Мирожиддин Собиржонович.</p><p>ул. Университетская, д. 9, Ташкент, 100174; ул. Кары Ниязи, д. 39, Ташкент, 100000</p></bio><bio xml:lang="en"><p>Mirojiddin S. Rasulov.</p><p>9 University str., Tashkent, 100174; 39 Kori Niyozov str., Tashkent, 100000</p></bio><email xlink:type="simple">rasulovms@bk.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; Национальный исследовательский университет “ТИИИМСХ”</institution><country>Узбекистан</country></aff><aff xml:lang="en"><institution>V.I. Romanovskiy Institute of Mathematics Uzbekistan Academy of Sciences; "TIIAME" National Research University</institution><country>Uzbekistan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>02</month><year>2025</year></pub-date><volume>0</volume><issue>2</issue><fpage>79</fpage><lpage>90</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Расулов М.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Расулов М.С.</copyright-holder><copyright-holder xml:lang="en">Rasulov M.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://izvuzmath.elpub.ru/jour/article/view/165">https://izvuzmath.elpub.ru/jour/article/view/165</self-uri><abstract><p>Рассматривается задача со свободной границей для системы квазилинейных параболических уравнения в одномерном случае. Для искомого решения установлены априорные оценки Шаудерского типа. На основе полученных оценок доказаны теоремы единственности и существования.</p></abstract><trans-abstract xml:lang="en"><p>This paper considers a free boundary problem for a system of quasi-linear parabolic equations in one dimension. Nonlinear problems with a free boundary are studied using a method based on constructing a priori estimates. For the solutions of the problem, apriory estimates of Shauder type are established. On the base of apriory estimates, the existence and uniqueness theorems are proved.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>реакция-диффузия</kwd><kwd>параболическое уравнение</kwd><kwd>свободная граница</kwd><kwd>априорная оценка</kwd><kwd>теорема существования и единственности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>reaction-diﬀusion type</kwd><kwd>parabolic equation</kwd><kwd>free boundary</kwd><kwd>a priori estimate</kwd><kwd>existence and uniqueness theorem</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">Du Y., Lin Zh.G. Spreading-Vanishing Dichotomy in the Diffusive Logistic Model with a Free Boundary, SIAM J. Math. Anal. 42 (1), 377–405 (2010), DOI: 10.1137/090771089.</mixed-citation><mixed-citation xml:lang="en">Du Y., Lin Zh.G. Spreading-Vanishing Dichotomy in the Diffusive Logistic Model with a Free Boundary, SIAM J. Math. 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