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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2022-13-2-135-141</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-224</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>Periodic solutions for an impulsive system of nonlinear differential equations with maxima</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Yuldashev</surname><given-names>T. K.</given-names></name></name-alternatives><email xlink:type="simple">tursun.k.yuldashev@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="en">National University of Uzbekistan<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>06</day><month>06</month><year>2025</year></pub-date><volume>13</volume><issue>2</issue><fpage>135</fpage><lpage>141</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Yuldashev T.K., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Yuldashev T.K.</copyright-holder><copyright-holder xml:lang="en">Yuldashev T.K.</copyright-holder><license 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://nanojournal.ifmo.ru/jour/article/view/224">https://nanojournal.ifmo.ru/jour/article/view/224</self-uri><abstract><p>In this paper, a periodical boundary value problem for a first order system of ordinary differential equations with impulsive effects and maxima is investigated. We define a nonlinear functional-integral system, the set of periodic solutions of which consides with the set of periodic solutions of the given problem. In the proof of the existence and uniqueness of the periodic solution of the obtained system, the method of compressing mapping is used.</p></abstract><kwd-group xml:lang="en"><kwd>impulsive differential equations</kwd><kwd>periodical boundary value condition</kwd><kwd>successive approximations</kwd><kwd>existence and uniqueness of periodic solution</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">Benchohra M., Henderson J., Ntouyas S. K. Impulsive differential equations and inclusions. Contemporary mathematics and its application. Hindawi Publishing Corporation, New York, 2006.</mixed-citation><mixed-citation xml:lang="en">Benchohra M., Henderson J., Ntouyas S. K. Impulsive differential equations and inclusions. 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