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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">mathematics</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник российских университетов. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Universities Reports. Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2686-9667</issn><issn pub-type="epub">2782-3342</issn><publisher><publisher-name>Тамбовский государственный университет имени Г.Р. Державина</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20310/1810-0198-2018-23-124-583-594</article-id><article-id custom-type="elpub" pub-id-type="custom">mathematics-296</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>ARTICLES</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ СУЩЕСТВОВАНИЯ ГЛОБАЛЬНОГО РЕШЕНИЯ СИСТЕМЫ УРАВНЕНИЙ, ОПИСЫВАЮЩЕЙ ВЕРТИКАЛЬНОЕ ДВИЖЕНИЕ ВОЗДУХА В ДЫМОХОДЕ</article-title><trans-title-group xml:lang="en"><trans-title>STUDY OF THE EXISTENCE OF THE GLOBAL SOLUTION TO THE SYSTEM OF EQUATIONS OF THE VERTICAL MOTION OF THE AIR IN A CHIMNEY</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>Гомрани</surname><given-names>Сарра</given-names></name><name name-style="western" xml:lang="en"><surname>Ghomrani</surname><given-names>Sarra</given-names></name></name-alternatives><email xlink:type="simple">sarra.ghomrani@hotmail.fr</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Высший педагогический колледж им. Мессауд Зеггар</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ecole Normale Superieure Des Enseignants Messaoud Zeggar</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2026</year></pub-date><volume>23</volume><issue>124</issue><fpage>583</fpage><lpage>594</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гомрани С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Гомрани С.</copyright-holder><copyright-holder xml:lang="en">Ghomrani 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://mathematics.elpub.ru/jour/article/view/296">https://mathematics.elpub.ru/jour/article/view/296</self-uri><abstract><p>Рассматривается система уравнений, описывающая движение воздуха в дымоходе. Предлагается метод, основанный на «втором приближении». Доказана теорема существования и единственности «глобального решения».</p></abstract><trans-abstract xml:lang="en"><p>In this paper, we consider the system of equations that describes air motion in a chimney. By introducing a method based on the «second approximation», we prove a theorem on the existence and uniqueness of the global solution.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>глобальное решение</kwd><kwd>движение воздуха</kwd></kwd-group><kwd-group xml:lang="en"><kwd>global solution</kwd><kwd>motion of the air</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">Ghomrani S., Marin Antuna J., Fujita Yashima H. Un modelo de la subida del aire ocasionada por la condensaci´on del vapor y su c´alculo num´erico. Rev. 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