| Assume F is a cyclic group. If there is a group G which has a normalsubgroup N such that G/N=~F , then G is called a cyclic extension of Nby F. In this paper, we completely classify finite 2-groups which have atleast one abelian maximal subgroup generated by two elements by meansof a cyclic extension.This paper consists of four chapters. Chapterâ… is an introductionto this paper. Chapterâ…¡gives a list of preliminaries for this paper. InChapterâ…¢, we give the conjugate classes of involutions of Aut(C2n×C2m).In Chapterâ…£, we classify finite 2-groups which have at least one abelianmaximal subgroup generated by two elements. |