Papers

1. Morse theory and conjugacy classes of finite subgroups - II, pdf,
   with Matt Clay and Pallavi Dani.
2. Super-exponential 2-dimensional Dehn functions, pdf ,
   with Josh Barnard and Pallavi Dani.
3. Density of isoperimetric spectra, pdf ,
   with Max Forester. To appear in Geometry and Topology.
4. The equation $x^py^q=z^r$ and groups that act freely on $\Lambda$-trees, pdf,
   with Laura Ciobanu, Armando Martino and Shane O Rourke.
   Trans. Amer. Math. Soc. 361 (2009), no. 1, 223-236.
5. Morse theory and conjugacy classes of finite subgroups, pdf,
   with Matt Clay and Pallavi Dani. Geom. Dedicata 135 (2008), 15--22.
6. Super-exponential distortion of subgroups of CAT(-1) groups, pdf,
   with Josh Barnard and Pallavi Dani.
   Algebraic & Geometric Topology, 7 (2007), 301-308.
7. The Geometry of the Word Problem for Finitely Generated Groups
   Advanced Courses in Mathematics - CRM Barcelona, Birkhauser Verlag, Basel, 2007. vii+206pp.
   Noel Brady, Tim Riley, Hamish Short
8. Snowflake groups, Perron-Frobenius eigenvalues, and isoperimetric spectra, pdf version.
   with Martin R Bridson, Max Forester, and Krishnan Shankar. Geometry & Topology 13 (2009) 141-187.
9. Distortion of surface groups in CAT(0) free-by-cyclic groups, ps or pdf.
   with J. Barnard Geom. Dedicata 120 (2006), 119--139.
10. CAT(0) and CAT(-1) dimensions of torsion free hyperbolic groups, pdf.
    with J. Crisp Comment. Math. Helv. 82 (2007), no. 1, 61--85.
11. The length spectrum of a compact constant curvature complex is discrete, ps or pdf.
    with J. McCammond Geom. Dedicata 119 (2006), 159--167.
12. Bounding edge degrees in triangulated 3-manifolds, ps or pdf.
    with J. McCammond and J. Meier. Proceedings of the AMS 132 (2004), no. 1, 291--298.
13. Local-to-asymptotic topology for cocompact CAT(0) complexes, ps.
    with J. McCammond and J. Meier. Topology and its Applications 131 (2003), no. 2, 177--188.
14. Rigidity of Coxeter groups and Artin groups, ps.
    with J. McCammond, B. Muehlherr, and W. Neumann.
    Geometriae Dedicata, 94 (2002), no. 1, 91--109.
15. On dimensions of CAT(0) and CAT(-1) complexes with the same hyperbolic group action, ps.
    with John Crisp.
16. Two dimensional Artin groups with CAT(0) dimension three, ps or dvi.
    with John Crisp. Geometriae Dedicata 94 (2002) 185--214.
17. The pure symmetric automorphisms of a free group form a duality group, ps.
    with J. McCammond, J. Meier, and A. Miller. Jour. Algebra. 246 (2001), no 2, 881--896.
18. CAT(-1) structures for free-by-free groups, ps or dvi.
    (with A. Miller). Geom. Dedicata. 90 (2002) 77--98.
19. On algebraic and geometric dimensions for groups with torsion, ps or dvi.
    (with Ian J. Leary and Brita E. A. Nucinkis). Jour. London Math. Soc. (2) 64 (2001), no. 2, 489--500.
20. Sol geometry groups are not asynchronously automatic, ps or dvi.
    Proc. London Math. Soc. (3) 83 (2001), no. 1, 93--119.
21. There is only one gap in the isoperimetric spectrum, ps or dvi.
    (with M. R. Bridson). Geom. Funct. Anal. 10 (2000), no. 5, 1053--1070.
22. Connectivity at infinity for right-angled Artin groups, ps or dvi.
    (with J. Meier). Trans. Amer. Math. Soc. 353 (2001), no. 1, 117--132.
23. A note on finite subgroups of hyperbolic groups, ps or dvi.
    International Journal of Algebra and Computation, Vol. 10, No. 4 (2000), 399-405.
24. Branched coverings of cubical complexes and subgroups of hyperbolic groups, ps or dvi.
    Jour. London Math. Soc., Vol 60 (1999), No. 2, 461--480.
25. Filling-invariants at infinity for manifolds of nonpositive curvature, ps or dvi.
    (with B. Farb). Trans AMS, Vol.350, No.8 (1998), pp.3393-3405.
26. Morse theory and finiteness properties of groups, ps or dvi.
    (with M. Bestvina). Invent. Math. Vol.129 (1997) pp.445-470.
27. Asynchronous automatic structures on closed hyperbolic surface groups
    Geometric Group Theory (R. Charney, M. Davis, M. Shapiro eds.).
    OSU Math. Res. Inst. Publ. , Vol.3, de Gruyter, (1995)