Finite groups with three conjugacy class sizes of primary and biprimary elements

We determine the structure of finite $\pi(m)$-separable groups if the set of conjugacy class sizes of primary and biprimary elements is $\{1, m, mn\}$, where $m$ and $n$ are two coprime integers.

Finite groups with three conjugacy class sizes of primary and biprimary elements

We determine the structure of finite $\pi(m)$-separable groups if the set of conjugacy class sizes of primary and biprimary elements is $\{1, m, mn\}$, where $m$ and $n$ are two coprime integers.

___

  • The authors dedicate this work to Professor Wenbin Guo in honor of his 60th birthday. Alemany E, Beltr´an A, Felipe MJ. Finite groups with two p -regular conjugacy class length II. Bull Aust Math Soc 2009; 79: 419–425.
  • Baer R. Group elements of prime power index. T Am Math Soc 1953; 75: 20–47.
  • Beltr´an A, Felipe MJ. Prime powers as conjugacy class lengths of π -elements. Bull Aust Math Soc 2004; 69: 317–325.
  • Beltr´an A, Felipe MJ. The structure of finite groups with three class sizes. J Group Theory 2009; 12: 539–553.
  • Camina AR. Arithmetical conditions on the conjugacy class numbers of a finite group. J London Math Soc 1972; 2: 127–132.
  • Gorensten D. Finite Groups. New York, NY, USA: Harper and Row, 1968.
  • Itˆo N. On finite groups with given conjugate types I. Nagoya Math J 1953; 6: 17–28.
  • Itˆo N. On finite groups with given conjugate types II. Osaka J Math 1970; 7: 231–251.
  • Kong QJ, Guo XY. On an extension of a theorem on conjugacy class sizes. Israel J Math 2010; 179: 279–284.
  • Liu X, Wang Y, Wei H. Notes on the length of conjugacy classes of finite groups. J Pure Appl Algebra 2005; 196: 111–117.
  • Rebmann J. F-Gruppen. Arch Math 1971; 22: 225–230 (in Turkish).
  • Shao CG, Jiang QH. Finite groups with two conjugacy class sizes of π -elements of primary and biprimary orders. Monath Math 2013; 69: 105–112.
  • Shao CG, Jiang QH. On conjugacy class sizes of primary and biprimary elements of a finite group. Sci China Math 2014; 57: 491–498.