Commun. Korean Math. Soc. 2015; 30(1): 1-5
Printed January 31, 2015
https://doi.org/10.4134/CKMS.2015.30.1.1
Copyright © The Korean Mathematical Society.
Joongul Lee
Hongik University
Let $G$ be a cyclic group of prime power order. There is a natural embedding of $\ZG$ into a product of rings of integers of cyclotomic fields. In this paper the image of the embedding is determined, and we also compute the index of the image.
Keywords: group rings
MSC numbers: 16S34, 20C05
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