Algorithmic Aspects of Units in Group Rings

Andreas Bächle (), Wolfgang Kimmerle () and Leo Margolis ()
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Andreas Bächle: Vrije Universiteit Brussel, Vakgroep Wiskunde
Wolfgang Kimmerle: Universität Stuttgart, Fachbereich Mathematik, IGT
Leo Margolis: Universidad de Murcia, Departamento de matemáticas, Facultad de matemáticas

A chapter in Algorithmic and Experimental Methods in Algebra, Geometry, and Number Theory, 2017, pp 1-22 from Springer

Abstract: Abstract We describe the main questions connected to torsion subgroups in the unit group of integral group rings of finite groups and algorithmic methods to attack these questions. We then prove the Zassenhaus Conjecture for Amitsur groups and prove that any normalized torsion subgroup in the unit group of an integral group of a Frobenius complement is isomorphic to a subgroup of the group base. Moreover we study the orders of torsion units in integral group rings of finite almost quasisimple groups and the existence of torsion-free normal subgroups of finite index in the unit group.

Keywords: Units; Integral group rings; Zassenhaus conjectures; Computational character methods; 16S34; 16U60; 20C05; 20C40 (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-70566-8_1

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DOI: 10.1007/978-3-319-70566-8_1

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