Z. W. Birnbaum

Zygmunt Wilhelm "Z. W." Birnbaum (18 October 1903 – 15 December 2000), often known as Bill Birnbaum, was a Polish-American mathematician and statistician who contributed to functional analysis, nonparametric testing and estimation, probability inequalities, survival distributions, competing risks, and reliability theory.

He visited University of Göttingen, Germany from 1929 to 1931, first working as an assistant for Edmund Landau.

After obtaining a position as a correspondent for a Polish newspaper, he arrived in New York as a reporter in 1937.

He became a Professor of Mathematics at the University of Washington in 1939 (with help from Harold Hotelling and letters of reference from Richard Courant, Albert Einstein, and Edmund Landau).

Birnbaum was actively involved in reliability work with Boeing through the Boeing Scientific Research Laboratories during the late 1950s and 1960s, and was a key member of the "Seattle school of reliability", a group which also included Tom Bray, Gordon Crawford, James Esary, George Marsaglia, Al Marshall, Frank Proschan, Ron Pyke, and Sam Saunders.