Joint research appointment to Department of Mathematics and Materials Research Institute at Pennsylvania State University. His research involves domain pattern formation and domain switching in ferroelectric materials. Full-text eprints of a number of his papers.

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

Professor of Mathematics at the University of Vienna. Contact information and departmental information.

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.

A systems analyst/programmer with an interest in combinatorics, permutation groups, and philosophy with some very good links to those areas. Personal information including a web journal.