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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">10.22405/2226-8383-2024-25-4-147-153</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1853</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>Краткие сообщения</subject></subj-group></article-categories><title-group><article-title>Об одном классе периодических элементов гиперэллиптических полей, определяемых многочленами нечетной степени</article-title><trans-title-group xml:lang="en"><trans-title>On a class of periodic elements in hyperelliptic fields defined by polynomials of odd degree</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>Петрунин</surname><given-names>Максим Максимович</given-names></name><name name-style="western" xml:lang="en"><surname>Petrunin</surname><given-names>Maxim Maximovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук</p></bio><bio xml:lang="en"><p>candidate of physical and mathematical sciences</p></bio><email xlink:type="simple">petrushkin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный научный центр «Научно-исследовательский институт системных исследований Российской академии наук»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Scientific Research Institute of System Analysis</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2025</year></pub-date><volume>25</volume><issue>4</issue><fpage>147</fpage><lpage>153</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петрунин М.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Петрунин М.М.</copyright-holder><copyright-holder xml:lang="en">Petrunin M.M.</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/1853">https://www.chebsbornik.ru/jour/article/view/1853</self-uri><abstract><p>В случае произвольной нечетной степени многочлена 𝑓 над произвольным полем алгебраических чисел 𝐾 был получен класс всегда квазипериодических в K((𝑥)) элементов 𝑣+𝑤√𝑓/𝑢 для 𝑣,𝑤, 𝑢 ∈ K[𝑥] гиперэллиптического поля K(𝑥)(√𝑓), задаваемый только соотношениями на многочлены 𝑢, 𝑣,𝑤, 𝑓 и их степени. Этот класс не пуст при наличии в гиперэллиптическом поле хотя бы одного квазипериодического элемента. В классе был выделен подкласс заведомо периодических элементов.</p></abstract><trans-abstract xml:lang="en"><p>For an arbitrary odd-degree polynomial 𝑓 over an arbitrary field of algebraic numbers K, the class of always quasiperiodic elements in K((𝑥)) of the form 𝑣+𝑤√𝑓/𝑢 , where 𝑣,𝑤, 𝑢 ∈ K[𝑥], in the hyperelliptic field K(𝑥)(√𝑓), has been determined. This class is characterized by certain relationships involving the polynomials 𝑢, 𝑣,𝑤, and 𝑓, as well as their degrees. The class is guaranteed to be nonempty if at least one quasiperiodic element exists in the hyperelliptic field.Furthermore, a specific subclass of always periodic elements has been identified within this broader class.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гиперэллиптическое поле</kwd><kwd>непрерывные дроби</kwd><kwd>функциональные непрерывные дроби</kwd><kwd>𝑆-единицы</kwd><kwd>периодичность</kwd><kwd>квазипериодичность.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hyperelliptic field</kwd><kwd>continued fractions</kwd><kwd>functional continued fractions</kwd><kwd>𝑆-units</kwd><kwd>periodicity</kwd><kwd>quasiperiodicity</kwd><kwd>pseudoperiodicity.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках Государственного задания по проведению фундаментальных научных иссле- дований проект FNEF-2024-0001</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">Abel N.H. 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