JOHN F. NASH JR. - SIGNATURE(S) - HFSID 279799

The Nobel Prize-winner in Economics and famous mathematician signs this card in black ink

Signature: "John F. Nash, Jr." in black ink, 5x3 index card. John F. Nash Jr (1928-2015) was an American mathematician whose works in game theory, partial differential equations and differential geometry have provided insight into the factors that govern chance and events inside complex systems in daily life. His theories are used in evolutionary biology, economics, computing, artificial intelligence, computer science, accounting, games of skill, politics and military theory. In 1959 Nash began showing clear signs of mental illness and spent several years at psychiatric hospitals being treated for paranoid schizophrenia, and after 1970 his condition slowly improved, allowing him to return to academy work by the mid-1980s. While serving as a Senior Research Mathematician at Princeton University during the latter part of his life, he shared the 1994 Nobel Prize in Economic Sciences with game theorists Reinhard Selten and John Harsanyi. In recognition for his work on nonlinear partial differential equations, he was awarded the Abel prize in 2015.On May 23, 2015 Nash and his wife died in a wreck while riding a taxi in New Jersey. His struggles with his illness and his recovery became the basis for Sylvia Nasar's biography A Beautiful Mind, as well as a film of the same name starred by Russell Crowe. Fine condition.