finite group;
Hall pi-subgroup;
class of groups;
formation;
CRITERION;
CONJUGACY;
EXISTENCE;
D O I:
10.1070/SM2012v203n03ABEH004225
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
New classes of finite groups with Hall pi-subgroups that have the Sylow properties are constructed and studied. The classes of groups C-pi and D-pi introduced by P. Hall are substantially extended. Necessary and sufficient conditions are established under which a finite group has Hall pi-subgroups. D-Theorems generalizing D-theorems of P. Hall, Wielandt, Baer, and Hartley are obtained.