English

A generalization of Neumann's Question

Group Theory 2018-01-03 v1

Abstract

Let GG be a group, m2m\geq2 and n1n\geq1. We say that GG is an T(m,n)\mathcal{T}(m,n)-group if for every mm subsets X1,X2,,XmX_1, X_2, \dots, X_m of GG of cardinality nn, there exists iji\neq j and xiXi,xjXjx_i \in X_i, x_j \in X_j such that xixj=xjxix_ix_j=x_jx_i. In this paper, we give some examples of finite and infinite non-abelian T(m,n)\mathcal{T}(m,n)-groups and we discuss finiteness and commutativity of such groups. We also show solvability length of a solvable T(m,n)\mathcal{T}(m,n)-group is bounded in terms of mm and nn.

Keywords

Cite

@article{arxiv.1801.00113,
  title  = {A generalization of Neumann's Question},
  author = {A. Ahmadkhah and S. Marzang and M. Zarrin},
  journal= {arXiv preprint arXiv:1801.00113},
  year   = {2018}
}

Comments

10 pages

R2 v1 2026-06-22T23:32:49.973Z