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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">matatecs</journal-id><journal-title-group><journal-title xml:lang="ru">Математика и теоретические компьютерные науки</journal-title><trans-title-group xml:lang="en"><trans-title>Mathematics and Theoretical Computer Science</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2949-3919</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/2949-3919.2025.2.136-144</article-id><article-id custom-type="elpub" pub-id-type="custom">matatecs-80</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>Зависят ли свойства плоской замкнутой кривой от выбора точки начала ее обхода?</article-title><trans-title-group xml:lang="en"><trans-title>Does the properties of a closed plane curve depend on the choice of its initial point of rounding?</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>Сабитов</surname><given-names>И. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Sabitov</surname><given-names>I. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Механико-математический факультет</p><p>Ленинские горы, д. 1, Москва, 119991</p></bio><bio xml:lang="en"><p>Faculty of Mechanics and Mathematics,</p><p>1 Leninskie Gory, Moscow, 119991</p></bio><email xlink:type="simple">isabitov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>26</day><month>07</month><year>2025</year></pub-date><volume>3</volume><issue>2</issue><fpage>136</fpage><lpage>144</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сабитов И.Х., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сабитов И.Х.</copyright-holder><copyright-holder xml:lang="en">Sabitov I.K.</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://matatecs.elpub.ru/jour/article/view/80">https://matatecs.elpub.ru/jour/article/view/80</self-uri><abstract><p>Доказывается, что выбор точки начала обхода замкнутой кривой на плоскости влияет на свойства ее внешней геометрии.</p></abstract><trans-abstract xml:lang="en"><p>We prove that the choice of an initial point of rounding of a closed plane curve influences its exterior geometry.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>замкнутая плоская кривая</kwd><kwd>обход</kwd><kwd>влияние выбора его начала</kwd></kwd-group><kwd-group xml:lang="en"><kwd>closed plane curve</kwd><kwd>rounding</kwd><kwd>influence of the choice of its initial point</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">Э. Камке, Справочник по обыкновенным дифференциальным уравнениям, Изд-во Иностранной литературы, М., 1950.</mixed-citation><mixed-citation xml:lang="en">E. Kamke, Differentialgleichungen L¨osungsmethoden und L¨osungen. I, B.G. Teubner, Stuttgart, 1977 [in German].</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Н.В. Ефимов, Качественные вопросы теории деформаций поверхностей, УМН 3 (2), 47–158 (1948). URL: https://www.mathnet.ru/rus/rm8695</mixed-citation><mixed-citation xml:lang="en">N.V. Efimov, Qualitative problems of the theory of deformation of surfaces, Russ. Math.Surv. 3 (2), 47–158 (1948) [in Russian]. URL: https://www.mathnet.ru/rus/rm8695</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">А.Д. Александров, О бесконечно малых изгибаниях нерегулярных поверхностей, Матем. сб. 1 (3), 307–322 (1936). URL: https://www.mathnet.ru/rus/sm5391</mixed-citation><mixed-citation xml:lang="en">A.D. Aleksandrov, On  infinitesimal bendings of surfaces, Sb. Math. 1 (3), 307–322 (1936) [in Russian]. URL: https://www.mathnet.ru/rus/sm5391</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
