My research area is Theoretical Computer Science. Specific topics that I have worked on: Computational Complexity (see my book on this topic), Probabilistically Checkable Proofs (PCPs), computing approximate solutions to NP-hard problems, geometric embedding of metric spaces, unique games conjecture, complexity of financial derivatives, provable bounds for Machine Learning. See my group website
and also the blog offconvex.org that I contribute to.
Computer Science Dept,
35 Olden St
Princeton NJ 08540
609-258-3869 (but don't leave a msg; send email instead)
609-258-4562 (Ms Mitra Kelly; Admin. Assistant)
While on sabbatical in Spring 2013 I started a travelogue that I still maintain.