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 The Units and Idempotents in the Group Ring of a Finite Cyclic Group Commun. Korean Math. Soc. 1997 Vol. 12, No. 4, 855-864 Won-Sun Park Chonnam National University Abstract : Let $K$ be a algebraically closed field of characteristic 0 and $G$ a cyclic group of order $n$. We find the units and idempotent elements of the group ring $KG$ by using the basic group table matrix of $G$. Keywords : basic group table matrix, represented matrix, represented polynomial MSC numbers : 20C05 Downloads: Full-text PDF