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On groups with $S^2$ Bowditch boundary (1710.09018v3)
Published 24 Oct 2017 in math.GR
Abstract: We prove that a relatively hyperbolic pair $(G,P)$ has Bowditch boundary a 2-sphere if and only if it is a 3-dimensional Poincare duality pair. We prove this by studying the relationship between the Bowditch and Dahmani boundaries of relatively hyperbolic groups.