born June 13, 1928, Bluefield, W.Va., U.S.
U.S. mathematician.
He earned a doctorate from Princeton University at 22. He began teaching at Massachusetts Institute of Technology in 1951 but left in the late 1950s because of mental illness; thereafter he was informally associated with Princeton. Beginning in the 1950s with his influential thesis "Non-cooperative Games," Nash established the mathematical principles of game theory . His theory, known as the Nash solution or Nash equilibrium, attempted to explain the dynamics of threat and action among competitors. Despite its practical limitations, it was widely applied by business strategists. He shared the 1994 Nobel Prize in Economics with John C. Harsanyi (b. 1920) and Reinhard Selten (b. 1930). A film version of his life, A Beautiful Mind (2001), won an Academy Award for best picture.