Various college degrees, culminating in Ph.D. in mathematics, University of Pennsylvania, 1966. Veteran of U.S. Air Force (weather forecaster). 25 years experience in applied mathematical analysis, mostly in military defense. Licensed as real estate agent in 1991, as broker in 1999. Former Vice-President of Century 21 Einhorn-Adler. Married to Miriam Einhorn, of real estate renown. Other interests: tennis, contract bridge.