The hypercentre and the n-centre of the unit group of an integral group ring

被引:14
作者
Li, YL [1 ]
机构
[1] Mem Univ Newfoundland, Dept Math & Stat, St Johns, NF A1C 5S7, Canada
来源
CANADIAN JOURNAL OF MATHEMATICS-JOURNAL CANADIEN DE MATHEMATIQUES | 1998年 / 50卷 / 02期
关键词
D O I
10.4153/CJM-1998-021-2
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, we first show that the central height of the unit group of the integral group ring of a periodic group is at most 2. We then give a complete characterization of the n-centre of that unit group. The n-centre of the unit group is either the centre or the second centre (for n greater than or equal to 2).
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页码:401 / 411
页数:11
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