恰有7个非正规子群的有限群
Finite Groups with Seven Non-normal Subgroups
-
摘要: 利用非正规子群的共轭类类数为1,2的有限群的结构,给出了恰有7个非正规子群的有限群的完全分类.定理1 若有限群G恰有7个非正规子群,则G同构于以下群之一.(1)〈x,y|x~7=y~(2~n)=1,x~y=x~(-1),n≥1〉.(2)〈x,y | x~7=Y~(3~n)=1,x~y=x~4≥1〉.(3)A_4.(4)〈x,y| x~7=y~(7~n)=1,x~y=x~(1+7~(n-1)),n≥2〉.
-
关键词:
- 有限群,非正规子群,共轭,Sylow子群
Abstract: Using the results of non-normal subgroups with 1 and 2 conjugate classes,a complete classification of finite groups with seven non-normal subgroups is given. -
-
计量
- 文章访问数: 287
- HTML全文浏览数: 181
- PDF下载数: 0
- 施引文献: 0