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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">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</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">42620</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2024-70-4-691-701</article-id><article-id pub-id-type="edn">WZTJPS</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">On studying the spread model of the HIV/AIDS epidemic</article-title><trans-title-group xml:lang="ru"><trans-title>Об изучении модели распространения эпидемии ВИЧ/СПИДа</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shashkin</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Шашкин</surname><given-names>А. И.</given-names></name></name-alternatives><email>shashkin@amm.vsu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Polovinkina</surname><given-names>M. V.</given-names></name><name xml:lang="ru"><surname>Половинкина</surname><given-names>М. В.</given-names></name></name-alternatives><email>polovinkina-marina@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Polovinkin</surname><given-names>I. P.</given-names></name><name xml:lang="ru"><surname>Половинкин</surname><given-names>И. П.</given-names></name></name-alternatives><email>polovinkin@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Voronezh State University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Voronezh State University of Engineering Technologies</institution></aff><aff><institution xml:lang="ru">Воронежский государственный университет инженерных технологий</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Belgorod State National Research University</institution></aff><aff><institution xml:lang="ru">Белгородский государственный национальный исследовательский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2024</year></pub-date><volume>70</volume><issue>4</issue><issue-title xml:lang="en">VOL 70, NO4 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 70, №4 (2024)</issue-title><fpage>691</fpage><lpage>701</lpage><history><date date-type="received" iso-8601-date="2025-01-27"><day>27</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Shashkin A.I., Polovinkina M.V., Polovinkin I.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Шашкин А.И., Половинкина М.В., Половинкин И.П.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Shashkin A.I., Polovinkina M.V., Polovinkin I.P.</copyright-holder><copyright-holder xml:lang="ru">Шашкин А.И., Половинкина М.В., Половинкин И.П.</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/CMFD/article/view/42620">https://journals.rudn.ru/CMFD/article/view/42620</self-uri><abstract xml:lang="en"><p>The aim of this work is to study sufficient conditions for the asymptotic stability of the stationary solution of the initial-boundary value problem for a system of nonlinear partial differential equations describing the growth and spread of the HIV/AIDS epidemic. The above-mentioned model takes into account not only the factors taken into account by classical models, but also includes migration processes.</p></abstract><trans-abstract xml:lang="ru"><p>Целью работы является исследование достаточных условий асимптотической устойчивости стационарного решения начально-краевой задачи для системы нелинейных дифференциальных уравнений в частных производных, описывающих рост и распространение эпидемии ВИЧ/СПИДа. Вышеупомянутая модель учитывает не только факторы, учитываемые классическими моделями, но и включает миграционные процессы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>system of nonlinear partial differential equations</kwd><kwd>initial-boundary value problem</kwd><kwd>stationary solution</kwd><kwd>mathematical modeling</kwd><kwd>spread model of the HIV/AIDS epidemic</kwd><kwd>migration processes</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>система нелинейных дифференциальных уравнений в частных производных</kwd><kwd>начально-краевая задача</kwd><kwd>стационарное решение</kwd><kwd>математическое моделирование</kwd><kwd>модель распространения эпидемии ВИЧ/СПИДа</kwd><kwd>миграционные процессы</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Жукова И.В., Колпак Е.П. Математические модели злокачественной опухоли// Вестн. С.-Петербург. ун-та. Сер. 10. Прикл. мат. Информ. 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