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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2023-24-1-139-181</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1480</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>Article</subject></subj-group></article-categories><title-group><article-title>О симметриях трехмерных алгебраических цепных дробей</article-title><trans-title-group xml:lang="en"><trans-title>On symmetries of 3-dimensional algebraic continued fractions</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>Тлюстангелов</surname><given-names>Ибрагим Асланович</given-names></name><name name-style="western" xml:lang="en"><surname>Tlyustangelov</surname><given-names>Ibragim Aslanovich</given-names></name></name-alternatives><email xlink:type="simple">ibragim-tls@yandex.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 им. М. В. Ломоносова;&#13;
Московский центр фундаментальной и прикладной математики</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University; &#13;
Moscow Center of Fundamental and Applied Mathematics</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>25</day><month>05</month><year>2023</year></pub-date><volume>24</volume><issue>1</issue><fpage>139</fpage><lpage>181</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тлюстангелов И.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Тлюстангелов И.А.</copyright-holder><copyright-holder xml:lang="en">Tlyustangelov I.A.</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://www.chebsbornik.ru/jour/article/view/1480">https://www.chebsbornik.ru/jour/article/view/1480</self-uri><abstract><p>В данной работе подробно доказывается критерий наличия у алгебраической цепной дроби собственной палиндромической симметрии в размерности 4. Также мы приводим новое доказательство критерия наличия собственной циклической палиндромической симметрии в размерности 4. В качестве многомерного обобщения цепных дробей рассматриваются полиэдры Клейна.</p></abstract><trans-abstract xml:lang="en"><p>In this paper we prove in detail a criterion for an algebraic continued fraction to have a proper palindromic symmetry in dimension 4. We also present a new proof of the criterion for an algebraic continued fraction to have a proper cyclic palindromic symmetry in dimension 4.As a multidimensional generalization of continued fractions, we consider Klein polyhedra.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полиэдры Клейна</kwd><kwd>алгебраические решетки.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Klein polyhedra</kwd><kwd>algebraic lattices.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счёт гранта Российского научного фонда № 22-21-00079.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Klein F. 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