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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

Zap. Nauchn. Sem. POMI, 2014 Volume 423, Pages 105–112 (Mi znsl5999)

Normalizer of an elementary net group associated with a non-split torus in the general linear group over a field

N. A. Dzhusoevaa, V. A. Koibaevab

a North-Ossetia State University, Vladikavkaz, Russia
b South Mathematical Institute of VSC RAS, Vladikavkaz, Russia

Abstract: In this paper we compute the normalizer $N(\sigma)$ of an elementary net group $E(\sigma)$ associated with non-split maximal torus $T(d)$ in the general linear group $GL(n,k)$ over a field $k$ of odd characteristic. The non-split maximal torus $T=T(d)$ is provided by a radical extension $k(\sqrt[n]d)$ of degree $n$ of the ground field $k$ (minisotropic torus).

Key words and phrases: linear groups, overgroups, intermediate subgroups, non-split maximal torus, nets, net groups.

UDC: 512.5

Received: 10.03.2014


 English version:
Journal of Mathematical Sciences (New York), 2015, 209:4, 549–554

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© Steklov Math. Inst. of RAS, 2024