Boundary -algebras for acylindrical groups
arXiv:0710.3460
Abstract
Let be an infinite, locally finite tree with more than two ends. Let $Γ<\aut(Δ)$ be an acylindrical uniform lattice. Then the boundary algebra $\cl A_Γ= C(\partialΔ)\rtimes Γ$ is a simple Cuntz-Krieger algebra whose K-theory is determined explicitly.
Some typos and the final paragraph of Example 5.1 have been corrected