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JOURNALS // Sibirskii Matematicheskii Zhurnal // Archive

Sibirsk. Mat. Zh., 2013 Volume 54, Number 1, Pages 131–149 (Mi smj2407)

This article is cited in 4 papers

Lie algebras admitting a metacyclic frobenius group of automorphisms

N. Yu. Makarenko, E. I. Khukhro

Sobolev Institute of Mathematics, Novosibirsk, Russia

Abstract: Suppose that a Lie algebra $L$ admits a finite Frobenius group of automorphisms $FH$ with cyclic kernel $F$ and complement $H$ such that the characteristic of the ground field does not divide $|H|$. It is proved that if the subalgebra $C_L(F)$ of fixed points of the kernel has finite dimension $m$ and the subalgebra $C_L(H)$ of fixed points of the complement is nilpotent of class $c$, then $L$ has a nilpotent subalgebra of finite codimension bounded in terms of $m,c,|H|$, and $|F|$ whose nilpotency class is bounded in terms of only $|H|$ and $c$. Examples show that the condition of $F$ being cyclic is essential.

Keywords: Frobenius groups, automorphism, Lie algebras, nilpotency class.

UDC: 512.5

Received: 31.10.2012


 English version:
Siberian Mathematical Journal, 2013, 54:1, 99–113

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© Steklov Math. Inst. of RAS, 2024