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Generic units in abelian group rings

  • Zbigniew Marciniak und Sudarshan K. Sehgal
Veröffentlicht/Copyright: 18. November 2005
Journal of Group Theory
Aus der Zeitschrift Band 8 Heft 6

Abstract

We introduce generic units in ℤCn and prove that they are precisely the shifted cyclotomic polynomials. They generate the group  of constructible units. For each cyclic group we produce a basis of a finite index subgroup of integral units consisting of certain irreducible cyclotomic polynomials; this extends a result of Hoechsmann and Ritter. We also study ‘alternating-like’ units and decide when they generate a subgroup of finite index.

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Published Online: 2005-11-18
Published in Print: 2005-11-18

Walter de Gruyter GmbH & Co. KG

Heruntergeladen am 27.11.2025 von https://www.degruyterbrill.com/document/doi/10.1515/jgth.2005.8.6.777/pdf
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