[01] Instructor, University of Chicago [02] Assistant Professor of Mathematics, University of California, Berkeley [03] Associate Professor of Mathematics, University of California, Berkeley [04] Associate Professor of Logic and Mathematics, Stanford University [05] Professor of Logic and Mathematics, Stanford University [06] Visiting Professor of Mathematics, University of Amsterdam [07] Professor of Philosophy and Mathematics, Princeton University [08] Professor of Mathematical Logic, Oxford University [09] University Professor of Computer Science, Mathematical Logic, and Philosophy, Carnegie Mellon University [10] Hillman Professor of Computer Science, Carnegie Mellon University [11] Visiting O.Univ.Prof. Math., Universitaets Linz [12] Professor Emeritus
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1958-60 1960-62 1962-63 1963-67 1967-69 1968-69 1969-72 1972-81 1981-03
1989-03 1992-93 July 2003
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