· Professor of Mathematics, Emeritus, California Institute of Technology (Caltech)2008–
· Professor of Mathematics, Caltech1968–2008
· Bateman Research Fellow, Caltech1967–1968
· PhD in Mathematics, Harvard University1963–1967
· Master's Degree in Mathematics, University of British Columbia1961–1962
· Bachelor's Degree in Mathematics, University of British Columbia1957–1961