44 citations · 90 across the 17 of their papers we have counts for
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math.GR2019
Incoherence and fibering of many free-by-free groups
Robert Kropholler, Genevieve Walsh
We show that free-by-free groups satisfying a homological criterion, which we call excessive homology, are incoherent. This class is large in nature, including many examples of hyp…
math.GT2019
Some groups with planar boundaries
Sang-hyun Kim, Genevieve S. Walsh
In this expository note, we illustrate phenomena and conjectures about boundaries of hyperbolic groups by considering the special cases of certain amalgams of hyperbolic groups. Wh…
math.GT2019
Right-angled Coxeter groups with non-planar boundary
Pallavi Dani, Matthew Haulmark, Genevieve Walsh
We investigate the planarity of the boundaries of right-angled Coxeter groups. We show that non-planarity of the defining graph does not necessarily imply non-planarity of every bo…