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Cao, Wenwu - 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.

Chaitin, Gregory - Complexity theory and information theory.

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

Cohn, Henry - 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.

Cullinane, Steven H. - 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.