Supported by the National Natural Science Foundation of China (Grant No.10571181);the National Natural Science Foundation of Guangdong Province (Grant No.06023728) ;the Specialized Research Fund of Guangxi University (Grant No.DD051024)
Let G be a finite group, p the smallest prime dividing the order of G and P a Sylow p-subgroup of G. If d is the smallest generator number of P, then there exist maximal subgroups P1, P2,..., Pd of P, denoted by Md(P...
the National Natural Science Foundation of China (No. 10571181); the Natural Science Foundation of Guangdong Province (No. 06023728).Acknowledgement The author wishes to thank Prof. Guo Wenbin for his help. The author also thanks the referees for their helpful comments.
A finite group G is called PN-group if G is not nilpotent and for every p-subgroup P of G, there holds that either P is normal in G or P lohtain in Z∞(G) or NG(P) is nilpotent, arbitary p ∈ π(G). In this pap...