Fritz John

Fritz John
Born	(1910-06-14)14 June 1910 Berlin, Germany
Died	10 February 1994(1994-02-10) (aged 83) New York City, United States
Nationality	American
Alma mater	University of Göttingen
Known for	John-Nirenberg Inequality John's equation John ellipsoid
Awards	Birkhoff Prize (1973) Steele Prize (1982)
Scientific career
Fields	Mathematics
Institutions	University of Kentucky Ballistic Research Laboratory New York University
Doctoral students	Clifford Gardner Sergiu Klainerman

Fritz John (14 June 1910 – 10 February 1994) was a German-born mathematician specialising in partial differential equations and ill-posed problems. His early work was on the Radon transform and he is remembered for John's equation. He was a 1984 MacArthur Fellow.