# Guyan Robertsons's articles (1996 onwards).

Boundary $C^*$-algebras of triangle geometries, by Guyan Robertson. pdf file

Harmonic cochains and K-theory for $\widetilde A_2$ groups, Groups Geom. Dyn., to appear
by Guyan Robertson. pdf file

On the K-theory of boundary $C^*$-algebras of $\widetilde A_2$ groups, J. K-theory, 9 (2012), 521-536.
by Oliver King and Guyan Robertson. pdf file

Centralizers in $\widetilde A_2$ groups, J. Group Theory, 14 (2011), 881--890.
by Guyan Robertson. pdf file

Invariant distributions on projective spaces over local fields, Proc. Amer. Math. Soc., 139 (2011), 2705-2711.
by Guyan Robertson. pdf file

Malnormal subgroups of lattices and the Pukanszky invariant in group factors, J. Funct. Anal., 258 (2010), 2708-2713.
by Guyan Robertson and Tim Steger. pdf file

Invariant boundary distributions for finite graphs, J. Combin. Theory Ser. A, 115 (2008), 1272-1278.
by Guyan Robertson. pdf file

Boundary C*-algebras for acylindrical groups, Proc. Amer. Math. Soc., 136 (2008), 3851-3860.
by Guyan Robertson. pdf file

Abelian subalgebras of von Neumann algebras from flat tori in locally symmetric spaces, J. Funct. Anal., 230 (2006), 419-431.
by Guyan Robertson. pdf file

Tiling systems and homology of lattices in tree products, New York J. Math., 11 (2005), 635-647.
by Guyan Robertson. pdf file or published file

Torsion in Boundary Coinvariants and K-theory for Affine Buildings, K-theory, 33 (2005), 347-369.
by Guyan Robertson. pdf file

Abelian subgroup structure of square complex groups and arithmetic of quaternions, J. Algebra, 286 (2005), 57-68.
by Diego Rattaggi and Guyan Robertson. pdf file

Boundary operator algebras for free uniform tree lattices, Houston J. Math., 31 (2005) 913-935.
by Guyan Robertson. pdf file

Singular masas of von Neumann algebras: examples from the geometry of spaces of nonpositive curvature, Travaux Mathematiques, Publications du Centre Universitaire de Luxembourg, XIV (2003), 153-165.
by Guyan Robertson. pdf file

Euler Characteristic in Odd Dimensions, Austral. Math. Soc. Gaz., 30 (2003), 195-199.
by Colin MacLaurin and Guyan Robertson. pdf file

Irreducible subshifts associated with $\tilde A_2$ buildings, J. Combin. Theory Ser. A, 103 (2003), 91-104.
by Guyan Robertson and Tim Steger. pdf file

Strong singularity for subalgebras of finite factors, Int. J. Math., 14 (2003), 235--258.
by Guyan Robertson, Allan Sinclair and Roger Smith. pdf file

Type III actions on boundaries of $\tilde A_n$ buildings, J. Operator Theory, 49 (2003), 25-44.
by Paul Cutting and Guyan Robertson. pdf file

Groups acting on products of trees, tiling systems and analytic K-theory, New York J. Math., 8 (2002), 111-131.
by Jason S. Kimberley and Guyan Robertson. pdf file or published file

Asymptotic K-theory for groups acting on $\tilde A_2$ buildings, Canadian Math. J., 53 (2001), 809-833.
by Guyan Robertson and Tim Steger. pdf file

K-theory computations for boundary algebras of $\tilde A_2$ groups,
by Guyan Robertson and Tim Steger. A computational appendix to "Asymptotic K-theory for groups acting on $\tilde A_2$ buildings." pdf file

Simple purely infinite $C^*$-algebras and $n$-filling actions, J. Funct. Anal. 175 (2000), 197-213.
by Paul Jolissaint and Guyan Robertson . pdf file

Affine buildings, tiling systems and higher rank Cuntz-Krieger algebras, J. reine angew. Math. 513 (1999), 115-144.
by Guyan Robertson and Tim Steger. pdf file

A Haagerup inequality for $\tilde A_1 \times\tilde A_1$ and $\tilde A_2$ buildings, Geometric and Funct. Anal. 8 (1998), 702-731.
by Jacqui Ramagge, Guyan Robertson and Tim Steger. pdf file

Factors from trees, Proc. Amer. Math. Soc. 125 (1997), 2051--2055.
by Guyan Robertson and Jacqui Ramagge. pdf file

Maximal abelian subalgebras of the group factor of an $\tilde A_2$ group, J. Operator Theory 36 (1996), 317--334.
by Guyan Robertson and Tim Steger. pdf file

Triangle buildings and actions of type $III_{1/q^2}$, J. Funct. Anal. 140 (1996), 472--504.
by Guyan Robertson and Jacqui Ramagge. pdf file

C*-algebras arising from group actions on the boundary of a triangle building, Proc. London Math. Soc. 72 (1996), 613--637.
by Guyan Robertson and Tim Steger. pdf file

# Miscellaneous

Torsion free A_2 computations pdf file