Title: Third Annual Southern California Probability Symposium Date: Monday, December 18, 1972 Host: UCI Organizer: Donald Darling Program: 1O:3O-11:OO AM Coffee 11:00-12:0O AM Thomas Liggett (UCLA) Ergodic theorems for a class of infinite particle systems with interactions 12:3O-2:00 PM Lunch 2:00-3:0O PM Harry Kesten (Cornell) Random difference equations and products of random matrices 3:00-4:O0 PM Coffee 4:0O-5:00 PM John B. Walsh (University of British Columbia) Markov processes in duality