Home Homeomorphism types of the Bowditch boundaries of infinite-ended relatively hyperbolic groups
Article
Licensed
Unlicensed Requires Authentication

Homeomorphism types of the Bowditch boundaries of infinite-ended relatively hyperbolic groups

  • Ravi Tomar ORCID logo
Published/Copyright: July 2, 2024

Abstract

For n 2 , let G 1 = A 1 A n and G 2 = B 1 B n where the A i ’s and B i ’s are non-elementary relatively hyperbolic groups. Suppose that, for 1 i n , the Bowditch boundary of A i is homeomorphic to the Bowditch boundary of B i . We show that the Bowditch boundary of G 1 is homeomorphic to the Bowditch boundary of G 2 . We generalize this result to graphs of relatively hyperbolic groups with finite edge groups. This extends Martin–Świątkowski’s work in the context of relatively hyperbolic groups.

Acknowledgements

The author thanks the anonymous referee for many remarks and suggestions, which helped in the improvement of the paper.

  1. Communicated by: Rachel Skipper

References

[1] J. Behrstock, C. Druţu and L. Mosher, Thick metric spaces, relative hyperbolicity, and quasi-isometric rigidity, Math. Ann. 344 (2009), no. 3, 543–595. 10.1007/s00208-008-0317-1Search in Google Scholar

[2] M. Bestvina and M. Feighn, A combination theorem for negatively curved groups, J. Differential Geom. 35 (1992), no. 1, 85–101. 10.4310/jdg/1214447806Search in Google Scholar

[3] B. H. Bowditch, Relatively hyperbolic groups, Internat. J. Algebra Comput. 22 (2012), no. 3, Article ID 1250016. 10.1142/S0218196712500166Search in Google Scholar

[4] M. R. Bridson and A. Haefliger, Metric Spaces of Non-Positive Curvature, Grundlehren Math. Wiss. 319, Springer, Berlin, 1999. 10.1007/978-3-662-12494-9Search in Google Scholar

[5] B. Burns Healy and G. C. Hruska, Cusped spaces and quasi-isometries of relatively hyperbolic groups, preprint (2020), https://arxiv.org/abs/2010.09876. Search in Google Scholar

[6] C. Druţu and M. Sapir, Tree-graded spaces and asymptotic cones of groups, Topology 44 (2005), no. 5, 959–1058. 10.1016/j.top.2005.03.003Search in Google Scholar

[7] M. J. Dunwoody, The accessibility of finitely presented groups, Invent. Math. 81 (1985), no. 3, 449–457. 10.1007/BF01388581Search in Google Scholar

[8] B. Farb, Relatively hyperbolic groups, Geom. Funct. Anal. 8 (1998), no. 5, 810–840. 10.1007/s000390050075Search in Google Scholar

[9] E. Ghys and P. de la Harpe, Sur les groupes hyperboliques d’après Mikhael Gromov, Progr. Math. 83, Birkhäuser, Boston, 1990. 10.1007/978-1-4684-9167-8Search in Google Scholar

[10] M. Gromov, Hyperbolic groups, Essays in Group Theory, Math. Sci. Res. Inst. Publ. 8, Springer, New York (1987), 75–263. 10.1007/978-1-4613-9586-7_3Search in Google Scholar

[11] D. Groves and J. F. Manning, Dehn filling in relatively hyperbolic groups, Israel J. Math. 168 (2008), 317–429. 10.1007/s11856-008-1070-6Search in Google Scholar

[12] G. C. Hruska, Relative hyperbolicity and relative quasiconvexity for countable groups, Algebr. Geom. Topol. 10 (2010), no. 3, 1807–1856. 10.2140/agt.2010.10.1807Search in Google Scholar

[13] A. Martin and J. Światkowski, Infinitely-ended hyperbolic groups with homeomorphic Gromov boundaries, J. Group Theory 18 (2015), no. 2, 273–289. 10.1515/jgth-2014-0043Search in Google Scholar

[14] D. V. Osin, Relatively hyperbolic groups: Intrinsic geometry, algebraic properties, and algorithmic problems, Mem. Amer. Math. Soc. 179 (2006), no. 843, 1–100. 10.1090/memo/0843Search in Google Scholar

[15] P. Papasoglu and K. Whyte, Quasi-isometries between groups with infinitely many ends, Comment. Math. Helv. 77 (2002), no. 1, 133–144. 10.1007/s00014-002-8334-2Search in Google Scholar

[16] J.-P. Serre, Trees, Springer Monogr. Math., Springer, Berlin, 2003. Search in Google Scholar

Received: 2023-11-23
Revised: 2024-06-08
Published Online: 2024-07-02
Published in Print: 2025-01-01

© 2024 Walter de Gruyter GmbH, Berlin/Boston

Downloaded on 19.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/jgth-2023-0264/html?lang=en
Scroll to top button