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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">10.22405/2226-8383-2015-16-4-250-283</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-198</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>ВЫЧИСЛЕНИЕ ФУНДАМЕНТАЛЬНЫХ S-ЕДИНИЦ В ГИПЕРЭЛЛИПТИЧЕСКИХ ПОЛЯХ РОДА 2 И ПРОБЛЕМА КРУЧЕНИЯ В ЯКОБИАНАХ ГИПЕРЭЛЛИПТИЧЕСКИХ КРИВЫХ</article-title><trans-title-group xml:lang="en"><trans-title>CALCULATION OF THE FUNDAMENTAL S-UNITS IN HYPERELLIPTIC FIELDS OF GENUS 2 AND THE TORSION PROBLEM IN THE JACOBIANS OF HYPERELLIPTIC CURVES</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>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Petrunin</surname><given-names>M. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Федеральный научный центр Научно-исследовательский институт системных&#13;
исследований Российской академии наук (ФГУ ФНЦ НИИСИ РАН).</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>05</day><month>07</month><year>2016</year></pub-date><volume>16</volume><issue>4</issue><fpage>250</fpage><lpage>283</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Петрунин М.М., 2016</copyright-statement><copyright-year>2016</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/198">https://www.chebsbornik.ru/jour/article/view/198</self-uri><abstract><sec><title>В 2010 г</title><p>В 2010 г. В. П. Платоновым был предложен принципиально новый подход к проблеме кручения в якобиевых многообразиях гиперэллиптических кривых над полем рациональных чисел. Этот новый подход базируется на вычислении фундаментальных единиц в гиперэллиптических полях. С по- мощью указанного подхода было доказано существование точек кручения новых порядков. Полное изложение нового метода и полученных на его основе результатов содержится в [<xref ref-type="bibr" rid="cit2">2</xref>]. В. П. Платонов высказал гипотезу, что если рассмотреть S, состоящее из конечного и бесконечного нормирования, и изменить соответствующим образом определение степени S-единицы, то порядки Q-точек кручения, как правило, будут определяться степенями фундаментальных S-единиц. Основным результатом настоящего сообщения является построение фундаментальных S-единиц больших степеней методами, основанными на подходе В. П. Платонова. Вычисление базируется на методах непрерывных дробей и матричной линеаризации. В настоящей статье получили развитие эффективные алгоритмы вы- числения S-единиц методом непрерывных дробей. Улучшенные алгоритмы позволили построить упомянутые выше фундаментальные S-единицы больших степеней. В качестве следствия получено альтернативное доказательство существования Q-точек кручения некоторых больших порядков в соответствующих якобианах гиперэллиптических кривых. </p></sec><sec><title> </title><p> </p></sec></abstract><trans-abstract xml:lang="en"><p>A new approach to the torsion problem in the Jacobians of hyperelliptic curves over the field of rational numbers was offered by Platonov. This new approach is based on the calculation of fundamental units in hyperelliptic fields. The existence of torsion points of new orders was proved with the help of this approach. The full details of the new method and related results are contained in [<xref ref-type="bibr" rid="cit2">2</xref>]. Platonov conjectured that if we consider the S consisting of finite and infinite valuation and change accordingly definition of the degree of S-unit, the orders of torsion Q-points tend to be determined by the degree of fundamental S-units. The main result of this article is the proof of existence of the fundamental S-units of large degrees. The proof is based on the methods of continued fractions and matrix linearization based on Platonov’s approach. Efficient algorithms for computing S-units using method of continued fractions have been developed. Improved algorithms have allowed to construct the above-mentioned fundamental S-units of large degrees. As a corollary, alternative proof of the existence of torsion Q-points of some large orders in corresponding Jacobians of hyperelliptic curves was obtained.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>фундаментальные единицы</kwd><kwd>S-единицы</kwd><kwd>гиперэллиптические поля</kwd><kwd>якобиевы многообразия</kwd><kwd>гиперэллиптические кривые</kwd><kwd>проблема кручения в якобианах</kwd><kwd>быстрые алгоритмы</kwd><kwd>непрерывные дроби</kwd><kwd>матричная линеаризация</kwd><kwd>Q-точки кручния</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fundamental unit</kwd><kwd>S-unit</kwd><kwd>hyperelliptic fields</kwd><kwd>Jacobian</kwd><kwd>hyperelliptic curves</kwd><kwd>torsion problem in Jacobians</kwd><kwd>fast algorithms</kwd><kwd>continued fractions</kwd><kwd>matrix linearization</kwd><kwd>torsion Q-points</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа была выполнена при поддержке грантами РФФИ 13-01-12402 и 15-01-02094-а.</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">Платонов В. 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