The Characterizations of A_5 and PSL(2,7) and a Note on Finite CIT-Groups  

A_5与PSL(2,7)的特征及有限CIT-群

作　　者：段泽勇 

机构地区：[1]西南师大数学系

出　　处：《Chinese Quarterly Journal of Mathematics》1992年第2期1-5,共5页数学季刊（英文版）

摘　　要：In this paper, it has been shown that A_5 and PSL (2,7) are the only simple groups which just contain 15 or 21 in volutions, respectively. Meanwhile, we have also obtained some results about finite CIT-groups and finite nonsolvabie CIT-groups.

关 键 词：INVOLUTION finite CIT-group finite nonsolvable CIT-group 

分 类 号：O152[理学—数学]