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math.GT2018
Nonplanar graphs in boundaries of CAT(0) groups
Kevin Schreve, Emily Stark
Croke and Kleiner constructed two homeomorphic locally CAT(0) complexes whose universal covers have visual boundaries that are not homeomorphic. We construct two homeomorphic local…
math.GT2018
Action dimensions of some simple complexes of groups
Michael W. Davis, Giang Le, Kevin Schreve
The action dimension of a discrete group is the minimum dimension of contractible manifold that admits a proper -action. We compute the action dimension of the direct limit…