Equivalent NRH subgroup conjecture for Floyd boundaries
Equivalent NRH subgroup conjecture for Floyd boundaries
Let be a finitely generated group and let be a collection of proper subgroups. A group is non-relatively hyperbolic (NRH) if it is not hyperbolic relative to any collection of proper subgroups. A group acts geometrically finitely on its Floyd boundary when its action on that boundary is a geometrically finite convergence action.
NRH subgroup conjecture. If is hyperbolic relative to a collection of NRH proper subgroups, then acts geometrically finitely on its Floyd boundary.
The source states that the converse follows from its structural corollary and proves that this conjecture is equivalent to the Olshanskii–Osin–Sapir conjecture above. Its status therefore remains tied to that open conjecture.
Sources & referencesView supporting material
Primary source
Wenyuan Yang, “Peripheral structures of relatively hyperbolic groups”, arXiv:1101.2990 (2011).
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