Scientists at the University of California, San Diego (UCSD) have developed new insight into a formula that helped British cryptanalysts crack the German Enigma code in World War II.

Journal of Applied Probability, Vol. 38, No. 1 (Mar., 2001), pp. 152-164 (13 pages) Wang and Pötzelberger (1997) derived an explicit formula for the probability that a Brownian motion crosses a ...