摘要
In this paper, groups of order p^n in which the number of subgroups of possible order is less than or equal to p3 ale classified. It turns out that if p 〉 2, n≥ 5, then the classification of groups of order p^n in which the number of subgroups of possible order is less than or equal to p3 and the classification of groups of order p^n with a cyclic subgroup of index p2 are the same.
基金
supported by the National Natural Science Foundation of China(No.10671114)
the ShanxiProvincial Natural Science Foundation of China(No.2008012001)
the Returned Abroad-StudentFund of Shanxi Province(No.[2007]13-56)
