. "1952-12-19Z"^^ . . . . . . . . "American mathematician" . . . . . . . . . . . "David Harbater"@en . . . "1952Z"^^ . . "Harbater, David"@en . . . "David Harbater (born December 19, 1952) is an American mathematician at the University of Pennsylvania, well known for his work in Galois theory, algebraic geometry and arithmetic geometry."@en . . .