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主理想整环上线性群的一类扩群
引用本文:柳君珉.主理想整环上线性群的一类扩群[J].淮海工学院学报,2009,18(4):5-6.
作者姓名:柳君珉
作者单位:北京航空航天大学,数学与系统科学学院,北京,100191 
摘    要:典型群理论是群论的重要组成部分,典型群的子群结构研究的目的是定出典型群的所有极大子群和扩群.讨论了主理想整环R上线性群GL(2m,R)的子群,得到如下结果:设R为主理想整环,m≥2,G(2m,S)={(AB OD)∈GL(2m,R)|A,D∈GL(m,R),B∈S^m×m},P(2m,S)=G(2m,S)∩SL(2m,R),若P(2m,0)≤X≤G(2m,S),则存在R的理想T,U(R)的子群V,使得X=φT^-1(V).

关 键 词:主理想整环  线性群  扩群

A Type of Overgroup in the Linear Group over Principal Ideal Domain
LIU Jun-min.A Type of Overgroup in the Linear Group over Principal Ideal Domain[J].Journal of Huaihai Institute of Technology:Natural Sciences Edition,2009,18(4):5-6.
Authors:LIU Jun-min
Affiliation:LIU Jun-min (School of Mathematics & Systems Science, Beijing University of Aeronautics Astronautics, Beijing 100191, China)
Abstract:We made researches on a type of overgroup in the linear group over a principal ideal domain(PID) R in this paper.The result was as follows: let R be a principal ideal domain(PID),m≥2,G(2m,S)={(AB OD)∈GL(2m,R)|A,D∈GL(m,R),B∈S^m×m},P(2m,S)=G(2m,S)∩SL(2m,R),then there exists an ideal T of R,subgroup of V of U(R),so that X=φT^-1(V).Besides,we determined its overgroups.
Keywords:principal ideal domain(PID)  linear group  overgroups
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