Mathematician John Nash and has wife Alicia died in a tragic car accident yesterday (May 23, 2015) on the New Jersey Turnpike. To economists and game theory enthusiasts, the Princeton resident was best known for the Nash Equilibrium.
Here is a short deck explaining the application in Game Theory.
In 1994 he shared the Nobel Memorial Prize in Economics. He was the subject of a 1998 book and 2001 film, A Beautiful Mind.