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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">10.22405/2226-8383-2020-21-2-362-382</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-774</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>Классификация k-форм на $\R^n$ и существование ассоциированной геометрии на многообразиях</article-title><trans-title-group xml:lang="en"><trans-title>Classification of  k-forms  on  $\R^n$   and   the existence  of  associated  geometry  on  manifolds</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>Ле</surname><given-names>Хонг Ван</given-names></name><name name-style="western" xml:lang="en"><surname>Le</surname><given-names>Hong Van</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор наук, профессор</p></bio><bio xml:lang="en"><p>Doctor of Sciences, Professor</p></bio><email xlink:type="simple">hvle@math.cas.cz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ванжура</surname><given-names>Иржи</given-names></name><name name-style="western" xml:lang="en"><surname>Vanzura</surname><given-names>Jiri</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор наук, профессор</p></bio><bio xml:lang="en"><p>Doctor of Sciences, Professor</p></bio><email xlink:type="simple">vanzura@math.cas.cz</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики Чешской академии наук</institution><country>Чехия</country></aff><aff xml:lang="en"><institution>nstitute of Mathematics of the Czech Academy of Sciences</institution><country>Czech Republic</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт математики Чешской академии наук</institution><country>Чехия</country></aff><aff xml:lang="en"><institution>Institute of Mathematics of the Czech Academy of&#13;
Sciences</institution><country>Czech Republic</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>08</day><month>04</month><year>2020</year></pub-date><volume>21</volume><issue>2</issue><fpage>362</fpage><lpage>382</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ле Х.В., Ванжура И., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Ле Х.В., Ванжура И.</copyright-holder><copyright-holder xml:lang="en">Le H.V., Vanzura J.</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/774">https://www.chebsbornik.ru/jour/article/view/774</self-uri><abstract><p>В этой статье мы рассмотрим методы и результаты классификации $k$-форм (соотв. $k$-векторов на $ \R ^ n $), понимаемых как описание пространства орбит стандартного $\GL(n, \R)$-действие на $\Lambda^k \R^{n*}$ (соотв. на $\Lambda ^k \R^n$). Мы обсудим существование связанной геометрии, определяемой дифференциальными формами на гладких многообразиях. Эта статья также содержит Приложение, написанное Михаилом Боровым, о методах когомологии Галуа для нахождения вещественных форм комплексных орбит.</p></abstract><trans-abstract xml:lang="en"><p>In this paper we survey methods and results of classification of $k$-forms (resp. $k$-vectors on $\R^n$), understood as description of the orbit space of the standard $\GL(n, \R)$-action on $\Lambda^k \R^{n*}$(resp. on $\Lambda ^k \R^n$). We discuss the existence of related geometry definedby differential forms on smooth manifolds. This paper also contains an Appendix by Mikhail Borovoi onGalois cohomology methods for finding real forms of complex orbits.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>$ \mathrm{GL} (n</kwd><kwd>{\mathbb R})$-орбиты в $\Lambda^k\R^{n*}$</kwd><kwd>$\theta$-группа</kwd><kwd>геометрия</kwd><kwd>определяемая дифференциальными формами</kwd><kwd>когомологии Галуа</kwd></kwd-group><kwd-group xml:lang="en"><kwd>$ \mathrm {GL} (n</kwd><kwd>{\mathbb R})$-orbits in $\Lambda^k\R^{n*}$</kwd><kwd>$\theta$-group</kwd><kwd>geometry defined by differential forms</kwd><kwd>Galois cohomology</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование ХВЛ было поддержано GAˇCR-project 18-00496S и RVO:67985840.</funding-statement><funding-statement xml:lang="en">The research of HVL was supported by the GAˇCR-project 18-00496S and RVO:67985840.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title></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>
