具体地构造出两个有限循环群的自由积的外自同构群，并给出了其阶的计算公式。
The outer automorphism group of the free product of two cyclic groups is constructed, and two exact formulas for calculating its order are established.
第二章，主要研究有限反射群的最长元以及和最长元相对应的有限反射群的自同构。
In Chapter 2, we investigate the longest elements and the corresponding special automorphism of finite reflection groups.
应用推荐