5 citations · 9 across the 13 of their papers we have counts for
6 papers · 1 filter
Maximal abelian subalgebras of the group factor of an group
Guyan Robertson, Tim Steger
An group acts simply transitively on the vertices of an affine building . We study certain subgroups which act on certain apa…
--algebras arising from group actions on the boundary of a triangle building
Guyan Robertson, Tim Steger
A subgroup of an amenable group is amenable. The -algebra version of this fact is false. This was first proved by M.-D. Choi who proved that the non-nuclear -algebra $C^*…
Affine buildings, tiling systems and higher rank Cuntz-Krieger algebras
Guyan Robertson, Tim Steger
To an -dimensional subshift of finite type satisfying certain special properties we associate a -algebra $\cA$. This algebra is a higher rank version of a Cuntz-Krieger alg…
Malnormal subgroups of lattices and the Pukanszky invariant in group factors
Guyan Robertson, Tim Steger
Let be a connected semisimple real algebraic group. Assume that $G(\bb R)$ has no compact factors and let be a torsion-free uniform lattice subgroup of $G(\bb R)$. Then …
K-theory computations for boundary algebras of $\tA_2$ groups
Guyan Robertson, Tim Steger
This is an appendix to the paper {\bf Asymptotic K-theory for groups acting on $\tA_2$ buildings}, and contains the results of the computations performed by the authors.
Asymptotic K-theory for groups acting on $\tildeA_2$ buildings
Guyan Robertson, Tim Steger
Let be a torsion free lattice in $G=\PGL(3,{\mathbb F})$ where is a nonarchimedean local field. Then acts freely on the affine Bruhat-Tits building ${\mathcal…