. "2004". . . _:IcXqvbBv1930 "presidents_medal". _:IcXqvbBv1930 . . "2006". . . . "President's Medal"@en. . . . . . . . . . . _:IcXqvbBv1930. "Source: Freebase - The World's database". . . . "2000". . . . "2002". . . "2008". . . "In recognition of his outstanding contributions to a broad range of topics in mathematics, many of which have provided highly significant foundations to the development of theoretical physics; and of his eminent leadership within the scientific community."@en. . . "1998". . .