Nolan R. Wallach is professor of mathematics at the University of California, San Diego. Awards include the Alfred Sloan Fellowship 1972-1974, the Linback Award for Research Excellence, 1977, Honorary Professor, University of Cordoba, Argentina, 1989, and Elected Fellow of the American Academy of Arts and Sciences, 2004. Professor Wallach has over 135 publications including (with Roe Goodman) Symmetry, Representations, and Invariants (Graduate Texts in Mathematics, vol. 255).