Abstract
We build quasi-isometry invariants of relatively hyperbolic groups which detect the hyperbolic parts of the group; these are variations of the stable dimension constructions previously introduced by the authors.
We prove that, given any finite collection of finitely generated groups H each of which either has finite stable dimension or is non-relatively hyperbolic, there exist infinitely many quasi-isometry types of one-ended groups which are hyperbolic relative to H.
The groups are constructed using classical small cancellation theory over free products.
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Cordes, M., Hume, D. Relatively hyperbolic groups with fixed peripherals. Isr. J. Math. 230, 443–470 (2019). https://doi.org/10.1007/s11856-019-1830-5
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DOI: https://doi.org/10.1007/s11856-019-1830-5