American mathematician (1928–2015) who made fundamental contributions to game theory, differential geometry, and the study of partial differential equations; he is the only person to be awarded both the Nobel Memorial Prize in Economic Sciences and the Abel Prize. Nash's struggles with paranoid schizophrenia became the basis for Sylvia Nasar's biography, A Beautiful Mind, which was later adapted into an Oscar-winning movie. Ballpoint signature and inscription, "Photo from China for Karl Geyer, John F. Nash, Jr., 20 September 2013,” on a white 4 x 6 card, bearing an affixed image of Nash in China. In fine condition.
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