2 papers
math.RA2016
Free subgroups in almost subnormal subgroups of general skew linear groups
Nguyen Kim Ngoc, Mai Hoang Bien, Bui Xuan Hai
Let be a weakly locally finite division ring and a positive integer. In this paper, we investigate the problem on the existence of non-cyclic free subgroups in non-central…
math.RA2013
The existence of free non-cyclic subgroups in weakly locally finite division rings
Bui Xuan Hai, Nguyen Kim Ngoc
In this paper we prove that every non-central subnormal subgroup of the multiplicative group of a weakly locally finite division ring contains free non-cyclic subgroups.