| Citation | Distinguished for his contributions to automorphic forms and representation theory. His primary contribution has been the formulation and development in a long series of papers of the trace formula in dimension greater than one, but this has been accompanied by related contributions to harmonic analysis on real reductive groups, character formulas and a Paley-Wiener theorem, and more recently by applications to number theory, especially to base change for automorphic forms on the general linear group. |