Convergence-group conjecture for mapping torus subgroups

Let GG be a tame mixed pseudo-fibered group, and let HH be the maximal purely hyperbolic subgroup of GG. A p-A-like element is an element of the type defined in the paper, and for such an element ϕ\phi define the mapping torus subgroup Gϕ=HϕG_\phi=H\rtimes\langle\phi\rangle, with monodromy ϕ\phi.

Mapping torus convergence-group conjecture. For any p-A-like element ϕ\phi of GG, the mapping torus subgroup GϕG_\phi acts on S2S^2 as a convergence group.

This conjecture extends the paper's theorem that purely hyperbolic pseudo-fibered groups act on S2S^2 as convergence groups. The proposed extension remains open.

Sources & referencesView supporting material

Primary source

Juan Alonso, Hyungryul Baik and Eric Samperton, “On laminar groups, Tits alternatives, and convergence group actions on S^2”, arXiv:1411.3532 (2019).

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