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JOURNALS // Sibirskii Matematicheskii Zhurnal // Archive

Sibirsk. Mat. Zh., 2023 Volume 64, Number 3, Pages 598–610 (Mi smj7784)

Nilpotency of Lie type algebras with metacyclic frobenius groups of automorphisms

N. Yu. Makarenko

Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: Assume that a Lie type algebra admits a Frobenius group of automorphisms with cyclic kernel $F$ of order $n$ and complement $H$ of order $q$ such that the fixed-point subalgebra with respect to $F$ is trivial and the fixed-point subalgebra with respect to $H$ is nilpotent of class $c$. If the ground field contains a primitive $n$th root of unity, then the algebra is nilpotent and the nilpotency class is bounded in terms of $q$ and $c$. The result extends the well-known theorem of Khukhro, Makarenko, and Shumyatsky on Lie algebras with metacyclic Frobenius group of automorphisms.

Keywords: Lie type algebras, Frobenius group, automorphism, graded, solvable, nilpotent, Frobenius group of automorphisms.

UDC: 512.554.38

MSC: 35R30

Received: 09.11.2022
Revised: 27.12.2022
Accepted: 10.01.2023

DOI: 10.33048/smzh.2023.64.312



© Steklov Math. Inst. of RAS, 2024