RESEARCH ARTICLES
Bounded geodesics and Hausdorff dimension
Math. Proc. of the Camb. Phil. Soc. 116 (1994) 505-511.
with F. T. Farrell:
Rank 1 aspherical manifolds which do not support any nonpositively curved metric
Comm. in Analysis and Geometry 2 (1994) 65-78.
with E. Leuzinger:
Bounded geodesics in rank-1 locally symmetric spaces
Ergod. Th. & Dynam. Sys. 15 (1995) 813-820.
with F. T. Farrell and S. K. Roushon:
Knot complements and nonpositive curvature
(Unpublished Preprint)
with F. T. Farrell and S. K. Roushon:
Surgery groups of knot and link complements
Bull. London Math. Soc. 29 (1997) 400-406
with F. T. Farrell and S. K. Roushon:
Algebraic K-theory of pure braid groups
Asian Journal of Mathematics, vol. 4 (2000) 337-344.
with P. Sankaran:
Orbits of certain endomorphisms of nilmanifolds and hausdorff dimension
A Tribute to C. S. Seshadri: Perspectives in Geometry and Representation Theory (Eds: V. Lakshmibai et al.)
Hindustan Book Agency, New Delhi, 2003, 124-132.
with F. T. Farrell:
Exotic negatively curved structures on Cayley hyperbolic manifolds
Jour. Diff. Geom. 63 (2003) 41-62.
with F. T. Farrell:
Exotic structures and quaternionic hyperbolic manifolds
Algebraic groups and Arithmetic, (Eds: S. G. Dani and G. Prasad)
Narosa Publishing House, 2004.
with F. T. Farrell:
Nonpositivity: Curvature vs Curvature operator
Proceedings of the American Mathematical Society, 133 (2005), 191-192.
with S. Hersonsky and F. Paulin:
Approximating points (Appendix to `On the almost sure spiraling of geodesics in negatively curved manifolds')
Jour. Diff. Geom., 85 (2010) 271-314.
with F. T. Farrell:
Twisted doubles and Nonpositive curvature
Bull. of Lond. Math. Soc., 41 (2009) 1053-1059
EXPOSITORY ARTICLES
Riesz representation theorems
Mathematics Newsletter, 15 (2005) 25-31.
Continued fractions and Khinchine's theorem
Mathematics Newsletter, 16 (2006) 1-5.
The Kakeya needle problem
Mathematics Newsletter, 16 (2006) 25-29.
with Gowri Navada:
On thin subsets of the real line
Mathematics Newsletter, 17 (2007) 76-78.
Classifying low-dimensional manifolds
Mathematics Newsletter, 19 (2009) 10-15.
Ricci flow and negative curvature
Perspectives in Geometry and Topology, 11 (2010) 1-10.
Curvature vs. Curvature Operator
Special issue of the RMS Newsletter commemorating ICM 2010 in India, 19 (2010) 109-118.