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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 pub-id-type="doi">10.29235/1561-2430-2025-61-2-95-105</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-835</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>Левоинвариантные метрические f-структуры на трехмерных разрешимых группах Ли</article-title><trans-title-group xml:lang="en"><trans-title>Left-invariant metric f-structures on three-dimensional sol vable Lie groups</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>Балащенко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Balashchenko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Балащенко Виталий Владимирович – кандидат физико-математических наук, доцент, кафедра геометрии, топологии и методики преподавания математики</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Vitaly V. Balashchenko – Ph. D. (Physics and Mathematics), Associate Professor, Department of Geometry, Topology and Methods of Teaching Mathematics</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">vitaly.balashchenko@gmail.com</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>Куница</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kunitsa</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Куница Виктория Николаевна – аспирант, кафедра геометрии, топологии и методики преподавания математики</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Victoria N. Kunitsa – Postgraduate Student, Department of Geometry, Topology and Methods of Teaching Mathematics</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">vikakunica@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>11</day><month>07</month><year>2025</year></pub-date><volume>61</volume><issue>2</issue><fpage>95</fpage><lpage>105</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Балащенко В.В., Куница В.Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Балащенко В.В., Куница В.Н.</copyright-holder><copyright-holder xml:lang="en">Balashchenko V.V., Kunitsa V.N.</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/835">https://vestifm.belnauka.by/jour/article/view/835</self-uri><abstract><p>Исследуются трехмерные разрешимые группы Ли с точки зрения обобщенной эрмитовой геометрии. Соответствующие трехмерные разрешимые алгебры Ли впервые были классифицированы Г. М. Мубаракзянов ым в 1963 г. Используя классификацию в несколько иных обозначениях, мы строим базовые левоинвариантные метрические f-структуры ранга 2 на всех трехмерных разрешимых группах Ли, снабженных стандартной левоинвариантной римановой метрикой. Доказано, что все рассмотренные f-структуры принадлежат одному или нескольким классам обобщенных почти эрмитовых структур. В результате это дает возможность предъявить новые примеры левоинвариантных киллинговых, приближенно келеровых, обобщенных приближенно келеровых и эрмитовых f-структур на разрешимых группах Ли. </p></abstract><trans-abstract xml:lang="en"><p>In the paper, we investigate three-dimensional solvable Lie groups from the point of view of the generalized Hermitian geometry. The corresponding three-dimensional solvable Lie algebras were firstly classified by G. M. Mubarakzyanov in 1963. Using the classification in somewhat different notations, we construct basic left-invariant metric f-structures of rank 2 on all three-dimensional solvable Lie groups equipped with the standard left-invariant Riemannian metric. It was proved that all the considered f-structures belong to one or several classes of generalized almost Hermitian structures. As a result, it gives the opportunity to present new examples of left-invariant Killling, nearly Kähler, generalized nearly Kähler and Hermitian f-structures on solvable Lie groups.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>разрешимая группа Ли</kwd><kwd>разрешимая алгебра Ли</kwd><kwd>левоинвариантная метрическая f-структура</kwd><kwd>приближенно келерова f-структура</kwd><kwd>эрмитова f-структура</kwd><kwd>обобщенная эрмитова геометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>solvable Lie group</kwd><kwd>solvable Lie algebra</kwd><kwd>left-invariant metric f-structure</kwd><kwd>nearly Kähler f-structure</kwd><kwd>Hermitian f-structure</kwd><kwd>generalized Hermitian geometry</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при частичной финансовой поддержке Государственной программы научных исследований на 2021–2025 годы «Конвергенция-2025», подпрограмма «Математические модели и методы», НИР «Структуры на линейных алгебраических группах, обобщенных главных G-расслоениях, однородных многообразиях и группах Ли» (№ гос. регистрации 20211882).</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">Yano, K. 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