Varieties of topological groups a survey
Varieties of Topological Groups Generated by Groups with Invariant Compact Neighbourhoods of the Identity
Varieties of topological groups, Lie groups and SIN-groups
In this paper we answer three open problems on varieties of topological groups by invoking Lie group theory. We also reprove in the present context that locally compact groups with arbitrarily small invariant identity neighborhoods can be approximated by Lie groups
Verbände vertauschbarer Untergruppen.