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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">37477</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2023-69-4-578-587</article-id><article-id pub-id-type="edn">WVMHMR</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">Stationary states in population dynamics with migration and distributed offspring</article-title><trans-title-group xml:lang="ru"><trans-title>Стационарные состояния в динамике популяций с миграцией и распределенным потомством</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Davydov</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Давыдов</surname><given-names>А. А.</given-names></name></name-alternatives><email>davydov@mi-ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khachatryan</surname><given-names>Kh. A.</given-names></name><name xml:lang="ru"><surname>Хачатрян</surname><given-names>Х. А.</given-names></name></name-alternatives><email>khachatur.khachatryan@ysu.am</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М. В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Yerevan State University</institution></aff><aff><institution xml:lang="ru">Ереванский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>69</volume><issue>4</issue><issue-title xml:lang="en">VOL 69, NO4 (2023)</issue-title><issue-title xml:lang="ru">ТОМ 69, №4 (2023)</issue-title><fpage>578</fpage><lpage>587</lpage><history><date date-type="received" iso-8601-date="2024-01-18"><day>18</day><month>01</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Davydov A.A., Khachatryan K.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Давыдов А.А., Хачатрян Х.А.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Davydov A.A., Khachatryan K.A.</copyright-holder><copyright-holder xml:lang="ru">Давыдов А.А., Хачатрян Х.А.</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/37477">https://journals.rudn.ru/CMFD/article/view/37477</self-uri><abstract xml:lang="en"><p>For an integral equation whose solutions provide stationary states of a population distributed in an arithmetic space, we nd the conditions for the existence of its solution and conditions under which this equation has no more than one solution.</p></abstract><trans-abstract xml:lang="ru"><p>Для интегрального уравнения, решения которого доставляют стационарные состояния популяции, распределенной в арифметическом пространстве, найдены условия существования его решения и условия, при которых у этого уравнения не более одного решения.</p></trans-abstract><kwd-group xml:lang="en"><kwd>population dynamics</kwd><kwd>stationary state</kwd><kwd>migration</kwd><kwd>distributed o spring</kwd><kwd>integral equation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>динамика популяций</kwd><kwd>стационарное состояние</kwd><kwd>миграция</kwd><kwd>распределенное потомство</kwd><kwd>интегральное уравнение</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation (project No. 19-11-00223).</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда (проект № 19-11-00223).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Арабаджян Л. 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