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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">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">30851</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2022-68-1-59-69</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</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">Local and 2-Local Derivations of Locally Simple Lie Algebras</article-title><trans-title-group xml:lang="ru"><trans-title>Локальные и 2-локальные дифференцирования локально простых алгебр Ли</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ayupov</surname><given-names>Sh. A.</given-names></name><name xml:lang="ru"><surname>Аюпов</surname><given-names>Ш. А.</given-names></name></name-alternatives><email>sh_ayupov@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kudaybergenov</surname><given-names>K. K.</given-names></name><name xml:lang="ru"><surname>Кудайбергенов</surname><given-names>К. К.</given-names></name></name-alternatives><email>karim2006@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yusupov</surname><given-names>B. B.</given-names></name><name xml:lang="ru"><surname>Юсупов</surname><given-names>Б. Б.</given-names></name></name-alternatives><email>baxtiyor_yusupov_93@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Romanovskiy Institute of Mathematics</institution></aff><aff><institution xml:lang="ru">Институт математики им. В.И. Романовского</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">National University of Uzbekistan</institution></aff><aff><institution xml:lang="ru">Национальный университет Узбекистана им. М. Улугбека</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Karakalpak State University</institution></aff><aff><institution xml:lang="ru">Каракалпакский государственный университет им. Бердаха</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-04-20" publication-format="electronic"><day>20</day><month>04</month><year>2022</year></pub-date><volume>68</volume><issue>1</issue><issue-title xml:lang="en">Science — Technology — Education — Mathematics — Medicine</issue-title><issue-title xml:lang="ru">Наука — технология — образование — математика — медицина</issue-title><fpage>59</fpage><lpage>69</lpage><history><date date-type="received" iso-8601-date="2022-04-20"><day>20</day><month>04</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Contemporary Mathematics. Fundamental Directions</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Современная математика. Фундаментальные направления</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Contemporary Mathematics. Fundamental Directions</copyright-holder><copyright-holder xml:lang="ru">Современная математика. Фундаментальные направления</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/30851">https://journals.rudn.ru/CMFD/article/view/30851</self-uri><abstract xml:lang="en"><p style="text-align: justify;">In the present paper, we study local and 2-local derivations of the classical locally simple Lie algebras. Firstly, we prove that every local and 2-local derivations on classical locally simple Lie algebra is a derivation. Further, we show that every local derivation of Borel subalgebras of locally simple Lie algebras is a derivation.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">В статье изучаются локальные и 2-локальные дифференцирования классических локально простых алгебр Ли. Доказано, что каждое локальное и 2-локальное дифференцирование классической локально простой алгебры Ли является дифференцированием. Далее показано, что каждое локальное дифференцирование борелевской подалгебры локально простой алгебры Ли является дифференцированием.</p></trans-abstract><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Albeverio S., Ayupov Sh. A., Kudaybergenov K. K., Nurjanov B. O. Local derivations on algebras of measurable operators// Commun. Cont. Math. - 2011. -13, № 4. - С. 643-657.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Ayupov Sh. A., Khudoyberdiyev A. Kh. 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