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Welcome to my webpages!

I am a Professor at Princeton University in the Department of Mathematics

I am also associated faculty of the Department of Physics and a member of the "General Relativity and Analysis at Princeton" Center.

I came to Princeton from the University of Cambridge where I am a member of DPMMS, the Relativity and Gravitation Group of DAMTP, the Centre for Theoretical Cosmology, and the Cambridge Centre for AnalysisClick here for my Cambridge webpages.