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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">10.22405/2226-8383-2022-23-3-269-281</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1364</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>Памятные даты</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Memorable dates</subject></subj-group></article-categories><title-group><article-title>Научно-исследовательский институт математики и механики Московского университета и математика ХХ столетия (к 100-летию основания Института)</article-title><trans-title-group xml:lang="en"><trans-title>Research Institute for Mathematics and Mechanics of Moscow University (to the 100𝑡ℎ anniversary of the foundation of the Institute)</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>Демидов</surname><given-names>Сергей Сергеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Demidov</surname><given-names>Sergey Sergeevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences</p></bio><email xlink:type="simple">serd42@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>31</day><month>12</month><year>2022</year></pub-date><volume>23</volume><issue>3</issue><fpage>269</fpage><lpage>281</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Демидов С.С., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Демидов С.С.</copyright-holder><copyright-holder xml:lang="en">Demidov S.S.</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/1364">https://www.chebsbornik.ru/jour/article/view/1364</self-uri><abstract><p>Созданный в ноябре 1922 года Научно-исследовательский институт математики и механики Московского университета может быть поставлен в ряд крупнейших математических институтов первой трети ХХ столетия. По самому своему положению – столичного математического института, обладавшего мощным научным потенциалом – он стал головнымматематическим институтом Советского Союза, определявшим общественную жизнь отечественного математического сообщества. С переездом в 1934 году из Ленинграда в Москву Президиума АН СССР и Математического института им. В.А. Стеклова общая ситуация претерпела принципиальные изменения – головным научным Институтом в СССР сталаСтекловка, включившая в свой состав ведущих учёных университетского НИИ математики и механики, работа которого свелась, в основном, к организации деятельности аспирантуры. При этом, конечно, нам не следует забывать, что, передав Стекловке своих ведущих учёных, Научно-исследовательский институт математики и механики Московского университета фактически стал одним из его соучредителей. И когда мы сегодня говорим об истории Института Стеклова, мы должны рассматривать историю Научно- исследовательского института математики и механики Московского университета как её неотъемлемую часть. Так что речь идёт не о «смерти» Института, а о новой его жизни, о синтезе идей двух основных российских школ, давшим жизнь Советской математическойшколе – одной из ведущих математических школ второй половины ХХ века.</p></abstract><trans-abstract xml:lang="en"><p>Established in November 1922, the Research Institute of Mathematics and Mechanics of Moscow University can be placed among the largest mathematical institutes in the first third of the 20th century. By its very position – a metropolitan mathematical institute with a powerfulscientific potential – it became the leading mathematical institute of the Soviet Union, which determined the social life of the Soviet mathematical community. With the relocation in 1934 from Leningrad to Moscow of the Presidium of the Academy of Sciences of the USSR andthe V. A. Steklov Mathematical Institute, the general situation has undergone fundamental changes – «Steklovka» became the head scientific institute in the USSR, which included leading scientists from the university research institute of mathematics and mechanics, whose work was reduced mainly to organizing postgraduate studies. At the same time, of course, we should not forget that, having transferred its leading scientists to «Steklovka», the Research Institute of Mathematics and Mechanics of Moscow University actually became one of its co-founders. And when we talk today about the history of the Steklov Institute, we must consider the history of the Research Institute of Mathematics and Mechanics of Moscow University as an integral part of it. So we are not talking about the “death” of the Institute, but about its new life, about thesynthesis of the ideas of the two main Russian schools that gave life to the Soviet Mathematical School, one of the leading mathematical schools of the second half of the 20𝑡ℎ century.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Научно-исследовательский институт математики и механики Мос- ковского университета</kwd><kwd>Математический институт им. В. А. Стеклова АН СССР</kwd><kwd>Матема- тический сборник I Всероссийский съезд математиков</kwd><kwd>Д. Ф. Егоров</kwd><kwd>Н. Н. Лузин</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Research Institute of Mathematics and Mechanics of Moscow University</kwd><kwd>Steklov Mathematical Institute of Academy of Science of the USSR</kwd><kwd>Matematicheskii Sbornik</kwd><kwd>I All- Russian Congress of Mathematicians</kwd><kwd>D. F. Egorov</kwd><kwd>N. N. 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