Free products of topological groups with central amalgamation. II
Free products of topological groups with central amalgamation. II
In Free products of topological groups with central amalgamation. I, we introduced the notion of amalgamated free product of topological groups and showed that if $A$ is a common central closed subgroup of Hausdorff topological groups $G$ and $H$, then the amalgamated free product $G{\coprod _A}H$ exists and is Hausdorff. …