• Dunfield, Nathan - Caltech. 3-dimensional topology, geometry, and related topics.
  • Bestvina, Mladen - Geometric group theory. Includes a problem list.
  • Glazebrook, James F. - Eastern Illinois University and University of Illinois at Urbana-Champaign. Differential Geometry and its Applications to Mathematical Physics; Index Theory and Foliations; Holomorphic Vector Bundles; Noncommutative Geometry. Books, articles and preprints.
  • Sormani, Christina - Lehman College and CUNY Graduate Center. Riemannian reometry: manifolds with Ricci curvature bounds, their Gromov-Hausdorff limits and metric spaces.
  • Palais, Richard - Differential geometry, mathematical visualisation.
  • Chang, Sun-Yung Alice - Director of Graduate Studies, Department of Mathematics, Princeton University. Subjects: geometric analysis, algebraic geometry, differential geometry.
  • Ballmann, Werner - Rheinische Friedrich-Wilhelms-Universität Bonn. Differential geometry; geometric topology.
  • Calegari, Danny - Specializes in topology and classical geometry. Department of mathematics. California Institute of Technology.
  • Keith, Sandra Zaroodny - St. Cloud State University MN. Interests in visualisation and education.
  • Dodson, C.T.J. (Kit) - Manchester. Differential geometry, stochastic geometry and applications.
  • Anderson, Jim - University of Southampton. Hyperbolic geometry, mostly in dimensions 2 and 3, and its connections to other areas, such as the geometry and topology of 3-manifolds and Riemann surfaces. Preprints and teaching material.
  • DeLaVina, Ermelinda - University of Houston Downtown. Computational geometry - Graffiti. Publications and software.
  • Sullivan, John M. - Optimal geometries.
  • Hales, Thomas C. - University of Pittsburgh. Kepler conjecture (announced a computer-aided proof), other space tiling conjectures, Langlands theory.
  • Kapovich, Michael - University of Utah. Low-dimensional geometry and topology.
  • Cherowitzo, Bill - Finite geometry. Department of Mathematics. University of Colorado at Denver.
  • Banchoff, Tom - Brown University. Geometry, visualisation; Popularisation.
  • Kimberling, Clark - Triangle centers, integer sequences, mathematical history and biography.