t and student of the Harvard mathematician and dynamical systems pioneer, George Birkoff (1922), was computing the output of a very reduced subset of Saltzman’s differential equations for predicting the weather (1962). Lorenz found that numerically integrated trajectories manifested unpredictable times and

RINKER,JOHN J DERRIN,MICHELLE SALTZMAN,SHIRLEY CHURCH OF BETHESDA D S EAKI