设G是一个有限群,通过考虑G的Sylow p-子群的结构,证明了如果G/F^*(G)无主因子同构于Gp,则G的Coleman外自同构群是p’-群。
Let G be a finite group. It is proved that if G/F^* (G) has no chief factor isomorphic to Cp, then the Coleman outer automorphism group of G is a p'-group by considering the structure of Sylow p-subgroups of G.