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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestifm-173</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>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>ГРУППЫ УАЙТХЕДА, ПРИВЕДЕННЫЕ НОРМЫ И ЦИКЛИЧНОСТЬ СПЕЦИАЛЬНЫХ АЛГЕБР АДЗУМАЙИ</article-title><trans-title-group xml:lang="en"><trans-title>WHITEHEAD GROUPS, REDUCED NORMS AND CYCLICITY OF SOME SPECIAL AZUMAYA ALGEBRAS</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>Янчевский</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Yanchevskiĭ</surname><given-names>V. I.</given-names></name></name-alternatives><email xlink:type="simple">yanch@im.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>03</day><month>08</month><year>2016</year></pub-date><volume>0</volume><issue>2</issue><fpage>32</fpage><lpage>36</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Янчевский В.И., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Янчевский В.И.</copyright-holder><copyright-holder xml:lang="en">Yanchevskiĭ V.I.</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://vestifm.belnauka.by/jour/article/view/173">https://vestifm.belnauka.by/jour/article/view/173</self-uri><abstract><p>В статье описана мультипликативная структура и приведенные нормы центральных k-алгебр A с делением в двух следующих случаях: (i) k – пополнение поля функций p-адической кривой относительно дискретных нормирований, поля вычетов которых – конечные расширенияQp , и A – слабо разветвленная k-алгебра с делением; (ii) A – тела некоммутативных рациональных функций над p-адическими алгебрами с делением. Получены достаточные условия цикличности алгебр из (i). В частности, установлена цикличность алгебр бесквадратного индекса.</p><p> </p></abstract><trans-abstract xml:lang="en"><p>We describe the multiplicative structure and the reduced norms for central division k-algebras A in the two following cases: (i) let k be a completion of the function field of the p-adic curve with respect to discrete valuations with finite extensions of Qp as residue fields and let A be tamely ramified division k-algebra; (ii) let A be skew-fields of non-commutative rational functions over p-adic division algebras. We also obtain some sufficient conditions for cyclicity of algebras from (i). In particular we prove that any algebra of square-free index from (i) is cyclic.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>группы Уайтхеда</kwd><kwd>алгебры с делением</kwd><kwd>циклические алгебры</kwd><kwd>приведенные нормы простых алгебр</kwd><kwd>тела некоммутативных рациональных функций</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Whitehead groups</kwd><kwd>division algebras</kwd><kwd>cyclic algebras</kwd><kwd>reduced norms of simple algebras</kwd><kwd>skew-fields of noncommutative rational functions</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">Draxl, P. SK1 von Schiefkorpern / P. Draxl, M. Kneeser // Lectures Notes Math. – 1977. – Vol. 778. – P. 1–124.</mixed-citation><mixed-citation xml:lang="en">Draxl, P. SK1 von Schiefkorpern / P. Draxl, M. 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