2 papers
math.GR2019
Coset Posets of Infinite Groups
Kai-Uwe Bux, Cora Welsch
We consider the coset poset associated with the families of proper subgroups, proper subgroups of finite index, and proper normal subgroups of finite index. We investigate under wh…
math.GR2016
Subgroup graph methods for presentations of finitely generated groups and the connectivity of associated simplicial complexes
Cora Welsch
In this article we generalize the theory of subgroup graphs of subgroups of free groups to finite index subgroups of finitely generated groups . We study and prove various p…