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On finite 2-equilibrated p-groups

  • Jiao Wang EMAIL logo and Xiuyun Guo
Published/Copyright: January 8, 2016

Abstract

A finite group G is said to be n-equilibrated if, for all subgroups H and K of G with d(H)n and d(K)n, either HNG(K) or KNG(H). In this paper, we investigate the structure of finite 2-equilibrated p-groups G. We provide a complete classification of such groups when G is 2-generator. If G is 3-generator, we prove that G has a normal metacyclic subgroup N such that G/N is cyclic and, if G has at least four generators, we prove that G is modular and Gx for any element x in G with o(x)=exp(G).

Award Identifier / Grant number: 11371237

Funding statement: The research of the work was partially supported by the National Natural Science Foundation of China (11371237) and a grant of “The First-Class Discipline of Universities in Shanghai”. The corresponding author is Xiuyun Guo.

The authors would like to thank Professor Christopher W. Parker for valuable suggestions and comments that contributed to the version of this paper.

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Received: 2014-11-3
Revised: 2015-10-12
Published Online: 2016-1-8
Published in Print: 2016-7-1

© 2016 by De Gruyter

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