Supported by NSF of China(Grant Nos.10961007,10871210);NSF of Guangxi(Grant No.0991101);Guangxi Education Department
Based on Wielandt's criterion for subnormality of subgroups in finite groups, we study 2-maximal subgroups of finite groups and present another subnormality criterion in finite solvable groups.
Supported by National Natural Science Foundation of China (Grant Nos. 10961007, 10871210);Natural Science Foundation of Guangxi Province (Grant No. 0991101);Guangxi Education Department
A subgroup H of a finitegroup G is called a c*-normal subgroup of G if there exists a