In 1988 Uhlenbeck lectured on Instantons and Their Relatives at the Centennial Celebration of the American Mathematical Society . Witten, who gave the next talk on Geometry and quantum field theory at the symposium said:
Sa 1988 Uhlenbeck lectured sa Instantons at kanilang mga kamag-anak at ang Centennial pagdiriwang ng Amerikanong matematiko Society. Witten, na ibinigay sa susunod na makipag-usap sa geometry at quantum field theory sa panayam said: