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JOURNALS // Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports] // Archive

Sib. Èlektron. Mat. Izv., 2016 Volume 13, Pages 1271–1282 (Mi semr749)

This article is cited in 3 papers

Mathematical logic, algebra and number theory

Automorphism groups of cyclotomic schemes over finite near-fields

D. V. Churikova, A. V. Vasil'evba

a Novosibirsk State University, ul. Pirogova, 2, 630090, Novosibirsk, Russia
b Sobolev Institute of Mathematics, pr. Koptyuga, 4, 630090, Novosibirsk, Russia

Abstract: We prove that apart from a finite number of known exceptions the automorphism group of a nontrivial cyclotomic scheme over a finite near-field $\mathbb{K}$ is isomorphic to a subgroup of the group ${\operatorname{A\Gamma L}}(1,\mathbb{F})$, where $\mathbb{F}$ is a field with $|\mathbb{F}|=|\mathbb{K}|$. Moreover, we obtain that the automorphism group of such a scheme is solvable if the base group of the scheme is solvable.

Keywords: near-field, cyclotomic scheme, automorphism group of a scheme, $2$-closure of a permutation group, $\frac{3}{2}$-transitive permutation groups.

UDC: 512.542.7

MSC: 20B25

Received October 7, 2016, published December 23, 2016

Language: English

DOI: 10.17377/semi.2016.13.099



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