'Beautiful mind' mathematician joint winner of Abel Prize

Two Americans described as "mathematical giants of the 20th century", including John Nash of "A Beautiful Mind" fame, won Norway's prestigious Abel Prize on Wednesday. Nash, 86, and Louis Nirenberg, 90, were awarded for "striking and seminal contributions to the theory of nonlinear partial differential equations (PDEs) and its applications to geometric analysis," the Norwegian Academy of Sciences and Letters said in a statement. Nash, from Princeton University