Seminal contributions of Bob Bass to control

Dr. R. W. Bass is one of the pioneers in the development of the modern control theory. Some of his fundamental contributions including the Bass-Roth theorem, the GASP program for synthesizing the Kalman filter, the Bass-Gura formula, a preliminary result anticipating the maximum principle, and the Bass-Norum-Schwartz filter are briefly reviewed. His role in the celebrated RIAS Mathematics and Control groups is briefly reminisced.