Publikationsdetails

Orders generated by character values

verfasst von
Andreas Bächle, Benjamin Sambale
Abstract

Let K: = Q(G) be the number field generated by the complex character values of a finite group G. Let ZK be the ring of integers of K. In this paper we investigate the suborder Z[G] of ZK generated by the character values of G. We prove that every prime divisor of the order of the finite abelian group ZK/ Z[G] divides |G|. Moreover, if G is nilpotent, we show that the exponent of ZK/ Z[G] is a proper divisor of |G| unless G= 1. We conjecture that this holds for arbitrary finite groups G.

Externe Organisation(en)
Vrije Universiteit Brussel
Friedrich-Schiller-Universität Jena
Typ
Artikel
Journal
Monatshefte fur Mathematik
Band
191
Seiten
665-678
Anzahl der Seiten
14
ISSN
0026-9255
Publikationsdatum
04.2020
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Mathematik (insg.)
Elektronische Version(en)
https://doi.org/10.1007/s00605-019-01324-3 (Zugang: Unbekannt)