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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">10.20310/2686-9667-2022-27-138-143-149</article-id><article-id custom-type="elpub" pub-id-type="custom">mathematics-142</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>Вложение гомотета в выпуклый компакт: алгоритм и его сходимость</article-title><trans-title-group xml:lang="en"><trans-title>Embedding of a homothete in a convex compactum: an algorithm and its convergence</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>Балашов</surname><given-names>Максим Викторович</given-names></name><name name-style="western" xml:lang="en"><surname>Balashov</surname><given-names>Maxim V.</given-names></name></name-alternatives><email xlink:type="simple">balashov73@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт проблем управления им. В. А. Трапезникова» Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>V. A. Trapeznikov Institute of Control Sciences of RAS</institution><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>07</month><year>2022</year></pub-date><volume>27</volume><issue>138</issue><fpage>143</fpage><lpage>149</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Балашов М.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Балашов М.В.</copyright-holder><copyright-holder xml:lang="en">Balashov M.V.</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/142">https://mathematics.elpub.ru/jour/article/view/142</self-uri><abstract><p>Рассматривается задача покрытия данного выпуклого компакта гомотетичным образом другого выпуклого компакта с заданным центром гомотетии, вычисляется коэффициент гомотетии. Задача имеет старую историю и тесно связана с вопросами о чебышевском центре, задачах о транслятах и другими задачами вычислительной геометрии. Методы аппроксимации многогранниками и другие аппроксимационные методы не работают в пространстве уже умеренной размерности (более 5 на ПК). Мы предлагаем подход, основанный на применении метода проекции градиента, который гораздо слабее чувствителен к размерности, чем аппроксимационные методы. Мы выделяем классы множеств, для которых удается доказать линейную скорость сходимости градиентного метода, т. е. сходимость со скоростью геометрической прогрессии с положительным знаменателем строго меньше 1. Эти множества должны быть сильно выпуклыми и обладать в определенном смысле гладкостью границы.</p></abstract><trans-abstract xml:lang="en"><p>The problem of covering of a given convex compact set by a homothetic image of another convex compact set with a given homothety center is considered, the coefficient of homothety is calculated. The problem has an old history and is closely related to questions about the Chebyshev center, problems about translates, and other problems of computational geometry. Polyhedral approximation methods and other approximation methods do not work in a space of already moderate dimension (more than 5 on a PC). We propose an approach based on the application of the gradient projection method, which is much less sensitive to dimension than the approximation methods. We select classes of sets for which we can prove the linear convergence rate of the gradient method, i. e. convergence with the rate of a geometric progression with a positive ratio strictly less than 1. These sets must be strongly convex and have, in a certain sense, smoothness of the boundary.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>метод проекции градиента</kwd><kwd>сильная выпуклость</kwd><kwd>равномерная гладкость</kwd><kwd>опорная функция</kwd><kwd>невыпуклая оптимизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gradient projection method</kwd><kwd>strong convexity</kwd><kwd>uniform smoothness</kwd><kwd>supporting function</kwd><kwd>nonconvex optimization</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">Л. Данцер, Б. Грюнбаум, В. Кли, Теорема Хелли и ее применения, Мир, М., 1968.</mixed-citation><mixed-citation xml:lang="en">Л. Данцер, Б. Грюнбаум, В. Кли, Теорема Хелли и ее применения, Мир, М., 1968.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">M. Althoff, G. 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