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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2016 Volume 207, Number 6, Pages 27–52 (Mi sm8580)

This article is cited in 6 papers

On complements of coradicals of finite groups

V. A. Vedernikova, M. M. Sorokinab

a Moscow City Pedagogical University
b I. G. Petrovsky Bryansk State University

Abstract: Let $\mathfrak F$ be an $\omega$-local Fitting formation, and $G$ a finite group that can be represented in the form of a product of $n$ subnormal subgroups whose $\mathfrak F$-coradicals are $\omega$-soluble, and whose Sylow $p$-subgroups are abelian for any $p\in\omega$. It is established that there exist $\omega$-complements of the $\mathfrak F$-coradical of $G$. New theorems on the existence of complements of coradicals of a group are obtained as corollaries. For an $\omega$-local formation $\mathfrak F$, conditions are established for the existence of complements and $\omega$-complements of the $\mathfrak F$-coradical of a group in any of its extensions.
Bibliography: 21 titles.

Keywords: finite group, Fitting class, $\omega$-local formation, coradical of a group, $\omega$-complement of a subgroup.

UDC: 512.542

MSC: Primary 20F17; Secondary 20D10, 20D20, 20D35

Received: 30.07.2015 and 28.11.2015

DOI: 10.4213/sm8580


 English version:
Sbornik: Mathematics, 2016, 207:6, 792–815

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© Steklov Math. Inst. of RAS, 2025