Abstract
In this paper we study the right-angled Coxeter groups that acts geometrically on the Salvetti complex of a certain right-angled Artin group, which we refer to as Croke–Kleiner spaces. We prove that any right-angled Coxeter group that acts geometrically on the Croke–Kleiner spaces acts with \(\pi /2\) angles between reflecting axes, while the quasi-isometric right-angled Artin group can act with angles that are any real number in the range \((0, \pi /2]\). The contrast between the two examples shows that in this case a right-angled Coxeter group is geometrically more “rigid” than its quasi-isometric counterpart.
Similar content being viewed by others
References
Bridson, M.R., Haefliger, A.: Metric spaces of non-positive curvature, Grundlehren der Mathematischen Wissenschaften [Fundamental Principles of Mathematical Sciences], vol. 319. Springer, Berlin (1999)
Croke, C.B., Kleiner, B.: Spaces with nonpositive curvature and their ideal boundaries. Topology 39(3), 549–556 (2000). doi:10.1016/S0040-9383(99)00016-6
Davis, M.W., Januszkiewicz, T.: Right-angled Artin groups are commensurable with right-angled Coxeter groups. J. Pure Appl. Algebra 153(3), 229–235 (2000). doi:10.1016/S0022-4049(99)00175-9
Gromov, M.: Groups of polynomial growth and expanding maps. Inst Hautes Études Sci Publ Math (53), 53–73, (1981) http://www.numdam.org/item?id=PMIHES_1981__53__53_0
Gutierrez, M., Piggott, A.: Rigidity of graph products of abelian groups. Bull. Aust. Math. Soc. 77(2), 187–196 (2008). doi:10.1017/S0004972708000105
Mihalik, M., Ruane, K., Tschantz, S.: Local connectivity of right-angled Coxeter group boundaries. J. Group Theory 10(4), 531–560 (2007). doi:10.1515/JGT.2007.042
Moussong, G.: Hyperbolic Coxeter groups. Ph.D. thesis, The Ohio State University, Columbus, Ohio (1988)
Serre, J.P.: Trees. Springer, Berlin (1980). (translated from the French by John Stillwell)
Wilson, J.: A CAT(0) group with uncountably many distinct boundaries. J. Group Theory 8(2), 229–238 (2005). doi:10.1515/jgth.2005.8.2.229
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Qing, Y. Geometry of right-angled Coxeter groups on the Croke–Kleiner spaces. Geom Dedicata 183, 113–122 (2016). https://doi.org/10.1007/s10711-016-0149-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10711-016-0149-1