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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">mathnas</journal-id><journal-title-group><journal-title xml:lang="ru">Труды Института математики НАН Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Institute of Mathematics of the NAS of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1812-5093</issn><publisher><publisher-name>Институт математики НАН Беларуси</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.67268/1812-5093-2026-34-1-7-17</article-id><article-id custom-type="edn" pub-id-type="custom">VRBVEG</article-id><article-id custom-type="elpub" pub-id-type="custom">mathnas-133</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>АЛГЕБРА И ТЕОРИЯ ЧИСЕЛ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ALGEBRA AND NUMBER THEORY</subject></subj-group></article-categories><title-group><article-title>Конечные группы с некоторыми nΦ-подгруппами</article-title><trans-title-group xml:lang="en"><trans-title>Finite groups with certain nΦ-subgroups</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>Монахов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Monakhov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гомель</p><p>Минск</p></bio><bio xml:lang="en"><p>Gomel</p><p>Minsk</p></bio><email xlink:type="simple">victor.monakhov@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>Ходанович</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Hodanovich</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гомель</p></bio><bio xml:lang="en"><p>Gomel</p></bio><email xlink:type="simple">hodanovich@gsu.by</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Гомельский государственный университет им. Ф. Скорины;&#13;
Институт математики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>F. Scorina Gomel State University;&#13;
Institute of Mathematics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Гомельский государственный университет им. Ф. Скорины</institution></aff><aff xml:lang="en"><institution>F. Scorina Gomel State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2026</year></pub-date><volume>34</volume><issue>1</issue><fpage>7</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Монахов В.С., Ходанович Д.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Монахов В.С., Ходанович Д.А.</copyright-holder><copyright-holder xml:lang="en">Monakhov V.S., Hodanovich D.A.</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://mathnas.ejournal.by/jour/article/view/133">https://mathnas.ejournal.by/jour/article/view/133</self-uri><abstract><p>Рассматриваются только конечные группы. Подгруппа $H$ группы $G$ называется $n\Phi$-подгруппой, если существует нормальная подгруппа $K$ такая, что $G=HK$ и $H\cap K$ содержится в подгруппе Фраттини подгруппы $H$. Получено строение конечной группы в следующих случаях: $n\Phi$-подгруппами являются все нормальные подгруппы; подгруппа Фраттини группы единична и каждая $n\Phi$-подгруппа нормальна; каждая $2$-максимальная подгруппа является $n\Phi$-подгруппой; каждая $3$-максимальная подгруппа является $n\Phi$-подгруппой; для всех простых $p$ каждая подгруппа порядка $p^2$ является $n\Phi$-подгруппой. Для произвольной формации $\mathfrak F$ устанавливается, что в $\mathfrak F$-корадикале группы каждая неединичная $\mathfrak F$-подгруппа не является $n\Phi$-подгруппой.</p></abstract><trans-abstract xml:lang="en"><p>Only finite groups are considered. A subgroup $H$ of a group $G$ is called an $n\Phi$-subgroup if there exists a normal subgroup $K$ such that $G=HK$ and $H\cap K$ is contained in the Frattini subgroup of $H$. The structure of a finite group is obtained in the following cases: all normal subgroups are $n\Phi$-subgroups; the Frattini subgroup of the group is trivial and every $n\Phi$-subgroup is normal; every $2$-maximal subgroup is an $n\Phi$-subgroup; every $3$-maximal subgroup is an $n\Phi$-subgroup; for all primes $p$, every subgroup of order $p^2$ is an $n\Phi$-subgroup. For an arbitrary formation $\mathfrak F$, it is established that in the $\mathfrak F$-residual of the a group, every non-trivial $\mathfrak F$-subgroup is not an $n\Phi$-subgroup.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>конечная группа</kwd><kwd>нормальная подгруппа</kwd><kwd>подгруппа Фраттини</kwd><kwd>$2$-максимальная подгруппа</kwd><kwd>формация</kwd><kwd>корадикал.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>finite group</kwd><kwd>normal subgroup</kwd><kwd>Frattini subgroup</kwd><kwd>$2$-maximal subgroup</kwd><kwd>formation</kwd><kwd>residual.</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Шеметков Л. А. Формации конечных групп. М.: Наука, 1978.</mixed-citation><mixed-citation xml:lang="en">Shemetkov L. A. Formations of Finite Groups. 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