本文研究了有限群G的Coleman外自同构群是p'-群这个问题.利用Sylowp-子群和同调群的性质,得到了有限群的Coleman外自同构群是p'-群的一些充分条件,其结果与M.Hertweck和W.Kimmerle得到的结果是不同的.
In this paper,the problem for the Coleman outer automorphism group of a finite group G to be a p'-group is studied.By using some properties of Sylow p-subgroups and homology groups,we obtain some sufficient conditions for the Coleman outer automorphism group of a finite group being a p'-group.Our results are different from those of M.Hertweck and W.Kimmerle.