Karl Stein (mathematician)

Karl Stein
Karl Stein in Eichstätt, 1968
Born	Frank Reginald Nunes Nabarro (1913-01-01)1 January 1913 Hamm, Westphalia
Died	19 October 2000(2000-10-19) (aged 87) Ebersbach an der Fils, Baden-Württemberg
Alma mater	University of Münster
Known for	Stein manifold Stein factorization Behnke–Stein theorem Behnke–Stein theorem on Stein manifolds Remmert–Stein theorem
Awards	Cantor Medal (1990)
Scientific career
Fields	Complex analysis Cryptography
Institutions	Ludwig Maximilian University of Munich
Academic advisors	Heinrich Behnke
Doctoral students	Otto Forster Gunther Schmidt Martin Schottenloher

Karl Stein (1 January 1913 in Hamm, Westphalia – 19 October 2000) was a German mathematician. He is well known for complex analysis and cryptography. Stein manifolds and Stein factorization are named after him.