Bachelor summa cum laude in Mathematics and Music, Columbia University, 1985. Master of Arts in Mathematics, Harvard University, 1987. Doctor of Philosophy in Mathematics, Harvard University, 1987.
Junior fellow Harvard University, Cambridge, Massachusetts, 1987-1990, associate professor math, John L. Loeb professor Natural Sciences, 1990-1993, professor math, since 1993. Consultant Bell Labs, 1991, Institute Defense Analysis, since 1986.