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ЖУРНАЛЫ // Algebra and Discrete Mathematics // Архив

Algebra Discrete Math., 2020, том 30, выпуск 2, страницы 282–289 (Mi adm783)

Эта публикация цитируется в 1 статье

RESEARCH ARTICLE

On a product of two formational $\mathrm{tcc}$-subgroups

A. Trofimuk

Department of Mathematics, Gomel Francisk Skorina State University, Gomel 246019, Belarus

Аннотация: A subgroup $A$ of a group $G$ is called $\mathrm{tcc}$-subgroup in $G$, if there is a subgroup $T$ of $G$ such that $G=AT$ and for any $X\le A$ and $Y\le T$ there exists an element $u\in \langle X,Y\rangle $ such that $XY^u\leq G$. The notation $H\le G $ means that $H$ is a subgroup of a group $G$. In this paper we consider a group $G=AB$ such that $A$ and $B$ are $\mathrm{tcc}$-subgroups in $G$. We prove that $G$ belongs to $\frak F$, when $A$ and $B$ belong to $\mathfrak F$ and $\mathfrak F$ is a saturated formation of soluble groups such that $\mathfrak U \subseteq \mathfrak F$. Here $\mathfrak U$ is the formation of all supersoluble groups.

Ключевые слова: supersoluble group, totally permutable product, saturated formation, $\mathrm{tcc}$-permutable product, $\mathrm{tcc}$-subgroup.

MSC: 20D10

Поступила в редакцию: 03.06.2019

Язык публикации: английский

DOI: 10.12958/adm1396



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