On the residual finiteness of generalised free products of nilpotent groups
On the residual finiteness of generalised free products of nilpotent groups
GILBERT BAUMSLAG(i) 1. Introduction.1.1.Notation.Let c€ be a class of groups.Then tfë denotes the class of those groups which are residually in eS(2), i.e., GeRtë if, and only if, for each x e G (x # 1) there is an epimorph of G in ^ such that the element corresponding to …