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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2024-68-1-15-17</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1170</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>Об абелевых унитарных инволюциях скрещенных произведений</article-title><trans-title-group xml:lang="en"><trans-title>On abelian unitary involutions of crossed products</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><bio xml:lang="ru"><p>Янчевский Вячеслав Иванович – академик, д-р физ.мат. наук, профессор, заведующий отделом.</p><p>Ул. Сурганова, 11, 220012, Минск</p></bio><bio xml:lang="en"><p>Yanchevskiĭ Vyacheslav I. – Academician, D. Sc. (Physics and Mathematics), Professor, Head of the Department.</p><p>11, Surganov Str., 220012, Minsk</p></bio><email xlink:type="simple">yanch@im.basnet.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>2024</year></pub-date><pub-date pub-type="epub"><day>04</day><month>03</month><year>2024</year></pub-date><volume>68</volume><issue>1</issue><fpage>15</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Янчевский В.И., 2024</copyright-statement><copyright-year>2024</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://doklady.belnauka.by/jour/article/view/1170">https://doklady.belnauka.by/jour/article/view/1170</self-uri><abstract><p>В теории линейных алгебраических групп классических типов важную роль играют специальные унитарные группы некоммутативных инволютивных скрещенных произведений с делением. Описание строения этих групп в значительной мере зависит от типа инволюции этих произведений. Рассматривается класс абелевых инволюций инволютивных скрещенных произведений и устанавливается критерий их существования при условии наличия в этих произведениях унитарных базисов (относительно этих инволюций).</p></abstract><trans-abstract xml:lang="en"><p>In the theory of classical linear algebraic groups, of importance are special unitary groups of non-commuted involution crossed products with division. The description of these groups largely depends on the involution type of these products. The class of Abelian involution crossed products is considered and the criterion for their existence is set provided that unitary bases (with respect to these involutions) are present in these products.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>скрещенные произведения</kwd><kwd>унитарные инволюции</kwd><kwd>абелевы инволюции</kwd><kwd>конгруэнц-теорема</kwd></kwd-group><kwd-group xml:lang="en"><kwd>crossed products</kwd><kwd>unitary involutions</kwd><kwd>abelian involutions</kwd><kwd>congruence theorem</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке БРФФИ (проект № Ф23-050). Автор признателен А. А. Осиновской за большую помощь, оказанную при наборе статьи</funding-statement><funding-statement xml:lang="en">The research is financial supported by the BRFFR (project no. Ф23-050). The author is grateful to A. A. Osinovskaya for the great assistance in typing the article</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">Янчевский, В. И. Приведенные группы Уайтхеда и проблема сопряжённости для специальных унитарных групп анизотропных эрмитовых форм / В. И. Янчевский // Зап. науч. сем. ПОМИ. – 2012. – Т. 400, № 23. – С. 222–245.</mixed-citation><mixed-citation xml:lang="en">Yanchevskii V. I. Reduced Whitehead Groups and the Conjugacy Problem for Special Unitary Groups of Anisotropic Hermitian Forms. Journal of Mathematical Sciences, 2013, vol. 192, pp. 250–262. https://doi.org/10.1007/s10958-013-1391-9</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Sethuraman, B. A. A note on the special unitary group of a division algebra / В. А. Sethuraman, В. Sury // Proc. Amer. Math. Soc. – 2005. – Vol. 134. – P. 351–354. https://doi.org/10.1090/s0002-9939-05-07985-2</mixed-citation><mixed-citation xml:lang="en">Sethuraman B. A., Sury B. A note on the special unitary group of a division algebra. Proceedings of the American Mathematical Society, 2005, vol. 134, pp. 351–354. https://doi.org/10.1090/s0002-9939-05-07985-2</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Sury, B. On SU(1, D) / [U(1, D), U(1, D)] for a quaternion division algebra D / B. Sury // Archiv der Mathematik. – 2008. – Vol. 90. – P. 493–500. https://doi.org/10.1007/s00013-008-2438-x</mixed-citation><mixed-citation xml:lang="en">Sury B. On SU(1, D) / [U(1, D), U(1, D)] for a quaternion division algebra D. Archiv der Mathematik, 2008, vol. 90, pp. 493–500. https://doi.org/10.1007/s00013-008-2438-x</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Херстейн, И. Некоммутативные кольца / И. Херстейн. – М., 1972. – 192 с.</mixed-citation><mixed-citation xml:lang="en">Herstein I. N. Noncommutative rings. 1968. 211 p.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Янчевский, В. И. Гензелевы алгебры с делением и приведенные унитарные группы Уайтхеда для внешних форм анизотропных алгебраических групп типа An / В. И. Янчевский // Математический сб. – 2022. – Т. 213, № 8. – С. 83–148. https://doi.org/10.4213/sm9660</mixed-citation><mixed-citation xml:lang="en">Yanchevskiǐ V. I. Henselian division algebras and reduced unitary Whitehead groups for outer forms of anisotropic algebraic groups of the type An. Sbornik: Mathematics, 2022, vol. 213, no. 8, pp. 1096–1156. https://doi.org/10.4213/sm9660e</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Прокопчук, А. В. О нециклических унитарных инволюциях гензелевых дискретно нормированных алгебр с делением / А. В. Прокопчук, В. И. Янчевский // Вес. Нац. акад. навук Беларусі. Сер. фіз.-мат. навук. – 2014. – № 1. – С. 51–53.</mixed-citation><mixed-citation xml:lang="en">Prokopchuk A. V., Yanchevskii V. I. Non-cyclic unitary involutions of Henselian discretely valued division algebras. Vestsі Natsyianal’nai akademіі navuk Belarusі. Seryia fіzіka-matematychnykh navuk = Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics series, 2014, no. 1, pp. 51–53 (in Russian).</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>
