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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">10.29235/1561-2430-2023-59-1-7-17</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-699</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>О модулярности решетки бэровских σ-локальных формаций</article-title><trans-title-group xml:lang="en"><trans-title>On the modularity of the lattice of Baer-σ-local formations</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>Воробьев</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorob’ev</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Воробьев Николай Николаевич – доктор физикоматематических наук, доцент, профессор кафедры математики</p><p>Московский пр., 33, 210038, Витебск</p></bio><bio xml:lang="en"><p>Nikolay N. Vorob’ev – Dr. Sc. (Physics and Mathematics), Associate Professor, Professor at the Department of Mathematics</p><p>33, Moscow Ave., 210038, Vitebsk</p></bio><email xlink:type="simple">vornic2001@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Витебский государственный университет имени П. М. Машерова</institution></aff><aff xml:lang="en"><institution>Vitebsk State University named after P. M. Masherov</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>04</month><year>2023</year></pub-date><volume>59</volume><issue>1</issue><fpage>7</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Воробьев Н.Н., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Воробьев Н.Н.</copyright-holder><copyright-holder xml:lang="en">Vorob’ev N.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/699">https://vestifm.belnauka.by/jour/article/view/699</self-uri><abstract><p>Все рассматриваемые группы конечны. Формацией называется класс групп, замкнутый относительно взятия гомоморфных образов и подпрямых произведений. Символом σ обозначают некоторое разбиение множества всех простых чисел. В работе В. Г. Сафонова, И. Н. Сафоновой, А. Н. Скибы (Commun. Algebra. 2020. Vol. 48, № 9. P. 4002–4012) определена обобщенная формационная σ-функция как отображение f : σ È {Ø} → {формации групп}, где f(Ø) ≠ ∅. При помощи обобщенной формационной σ-функции определены обобщенно локальные формации – так называемые бэровские σ-локальные формации. Множество всех таких формаций образует решетку по включению. В настоящей работе установлены свойства алгебраичности и модулярности этой решетки.</p></abstract><trans-abstract xml:lang="en"><p>Throughout this paper, all groups are finite. A group class closed under taking homomorphic images and finite subdirect products is called a formation. The symbol σ denotes some partition of the set of all primes. V. G. Safonov, I. N. Safonova, A. N. Skiba (Commun. Algebra. 2020. Vol. 48, № 9. P. 4002–4012) defined a generalized formation σ-function. Any function f of the form f : σ È {Ø} → {formations of groups}, where f(Ø) ≠ ∅, is called a generalized formation σ-function. Generally local formations or so-called Baer-σ-local formations are defined by means of generalized formation σ-functions. The set of all such formations partially ordered by set inclusion is a lattice. In this paper it is proved that the lattice of all Baerσ-local formations is algebraic and modular.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>конечная группа</kwd><kwd>формация</kwd><kwd>обобщенная формационная σ-функция</kwd><kwd>бэровская σ-локальная формация</kwd><kwd>полная решетка формаций</kwd><kwd>модулярная решетка</kwd><kwd>алгебраическая решетка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite group</kwd><kwd>formation</kwd><kwd>generalized formation σ-function</kwd><kwd>Baer-σ-local formation</kwd><kwd>complete lattice of formations</kwd><kwd>modular lattice</kwd><kwd>algebraic lattice</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой Acknowledgements. 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