Department of Mathematics, Princeton University. Research interests include geometric analysis, algebraic geometry, differential geometry. Recent preprints, course lecture-notes, list of publications,

Researcher in the Theory Group of Microsoft Research. His primary research interests are number theory, combinatorics, and theoretical computer science. Contact information and a nicely organized listing of eprints of his papers.

Personal information, CV, and links. Publications on Chooser-Picker games.

Specializing in dynamical systems. CV, publications and notes. Links to the world of mathematics and puzzles.