Question:  What American mathematician who made fundamental contributions to game theory, differential geometry, and the study of partial differential equations, had a film based on his the life called, A Beautiful Mind?
Sentence (from "John Forbes Nash Jr."): John Forbes Nash Jr. (June 13, 1928 – May 23, 2015) was an American mathematician who made fundamental contributions to game theory, differential geometry, and the study of partial differential equations. Nash's work has provided insight into the factors that govern chance and decision-making inside complex systems found in everyday life.
Relevant evidence: Yes