Let m, n 〉 1 be two coprime integers. In this paper, we prove that a finite solvable group is nilpotent if the set of the conjugacy class sizes of its primary and biprimary elements is {1, rn, n, mn}.
基金Supported by National Natural Science Foundation of China(Grant 11226038)Specialized Research Fund of Education Department of Shaanxi Provincial Govermment(11JK0499)
基金supported by National Natural Science Foundation of China(Grant Nos.11201401 and 11101258)National Science Foundation for Postdoctoral Scientists of China(Grant No.20100480582)University of Jinan Research Funds for Doctors(Grant Nos.XBS1335 and XBS1336)
文摘Let m, n 〉 1 be two coprime integers. In this paper, we prove that a finite solvable group is nilpotent if the set of the conjugacy class sizes of its primary and biprimary elements is {1, rn, n, mn}.
