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JOURNALS // Diskretnaya Matematika // Archive

Diskr. Mat., 2024 Volume 36, Issue 1, Pages 103–115 (Mi dm1792)

On satellites of $\sigma_\Omega$-foliated formations of groups

M. M. Sorokina, A. S. Nesterov

I. G. Petrovsky Bryansk State University

Abstract: Only finite groups are considered. A class of groups is called a formation if it is closed under taking homomorphic images and subdirect products. For a non-empty class $\Omega$ of simple groups V.A. Vedernikov defined $\Omega$-foliated formations of finite groups using two types of functions (functions-satellites and functions-directions). Let $\sigma_\Omega$ be an arbitrary partition of the class $\Omega$. The article studies $\sigma_\Omega$-foliated formations constructed by the authors as a natural generalization of the concept of an $\Omega$-foliated formation using A.N. Skiba's $\sigma$-methods. In the paper we proved the existence of different types of satellites of $\sigma_\Omega$-foliated formations and described their structure.

Keywords: finite group, class of groups, formation, $\sigma_\Omega$-foliated formation, satellite of $\sigma_\Omega$-foliated formation, direction of $\sigma_\Omega$-foliated formation.

UDC: 512.542

Received: 27.08.2023

DOI: 10.4213/dm1792



© Steklov Math. Inst. of RAS, 2025