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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">15949</article-id><article-id pub-id-type="doi">10.31857/S0869-56524876607-610</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Mathematics</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Математика</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">On orbits of action of 5-dimensional non-solvable Lie algebras in three-dimensional complex space</article-title><trans-title-group xml:lang="ru"><trans-title>Об орбитах действий 5-мерных неразрешимых алгебр Ли в трёхмерном комплексном пространстве</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Atanov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Атанов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lobvgasu@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kossovskiy</surname><given-names>I. G.</given-names></name><name xml:lang="ru"><surname>Коссовский</surname><given-names>И. Г.</given-names></name></name-alternatives><address><country country="CZ">Czech Republic</country></address><email>lobvgasu@yandex.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Loboda</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Лобода</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>lobvgasu@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Voronezh State University</institution></aff><aff><institution xml:lang="ru">"Воронежский государственный университет"</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Masaryk University</institution></aff><aff><institution xml:lang="ru">Масариков университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Voronezh State Technical University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный технический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-09-10" publication-format="electronic"><day>10</day><month>09</month><year>2019</year></pub-date><volume>487</volume><issue>6</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>607</fpage><lpage>610</lpage><history><date date-type="received" iso-8601-date="2019-09-04"><day>04</day><month>09</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-09-04"><day>04</day><month>09</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/15949">https://journals.eco-vector.com/0869-5652/article/view/15949</self-uri><abstract xml:lang="en"><p>After the description by E. Cartan in 1932 holomorphically homogeneous real hypersurfaces of two-dimensional complex spaces, a similar study in the 3-dimensional case remains incomplete. In a series of works performed by several international teams of authors, the problem is reduced to describing homogeneous surfaces that are non-degenerate in Levi sense and have exactly 5-dimensional Lie algebras of holomorphic vector fields. In this paper, precisely such homogeneous surfaces are investigated. At the same time, a significant part of the extensive list of abstract 5-dimensional Lie algebras does not provide new examples of homogeneity. A complete description of the orbits of 5-dimensional non-solvable Lie algebras in a three-dimensional complex space, given in the paper, includes examples of new homogeneous hypersurfaces. The presented results bring to finish a large-scale scientific study of interest to various branches of mathematics.</p></abstract><trans-abstract xml:lang="ru"><p>После описания Э. Картаном в 1932 г. голоморфно-однородных вещественных гиперповерхностей двумерных комплексных пространств аналогичное исследование в трёхмерном случае остаётся незавершённым. В серии работ, выполненных несколькими международными коллективами авторов, задача сводится к описанию однородных поверхностей, невырожденных по Леви и имеющих в точности 5-мерные алгебры Ли голоморфных векторных полей. В настоящей работе исследуются именно такие однородные поверхности. При этом значительная часть обширного списка абстрактных 5-мерных алгебр Ли не даёт новых примеров однородности. Полное описание орбит 5-мерных неразрешимых алгебр Ли в трёхмерном комплексном пространстве, приведённое в работе, включает в себя примеры новых однородных гиперповерхностей. Представленные результаты приближают к завершению крупное научное исследование, представляющее интерес для различных разделов математики.</p></trans-abstract><kwd-group xml:lang="en"><kwd>homogeneous variety</kwd><kwd>holomorphic transformation</kwd><kwd>non-solvable Lie algebra</kwd><kwd>vector field</kwd><kwd>real hypersurface</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>однородное многообразие</kwd><kwd>голоморфное преобразование</kwd><kwd>неразрешимая алгебра Ли</kwd><kwd>векторное поле</kwd><kwd>вещественная гиперповерхность</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Grantová agentura České republiky</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Агенство грантов Чешской Республики</institution></institution-wrap></funding-source><award-id></award-id></award-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Austrian Science Fund</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Австрийский научный фонд</institution></institution-wrap></funding-source><award-id></award-id></award-group><award-group><funding-source><institution-wrap><institution xml:lang="en">Russian Foundation for Basic Research</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Российский фонд фундаментальных исследований</institution></institution-wrap></funding-source><award-id></award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Лобода А. В. // Тр. 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