Gerhard Hochschild

Gerhard Paul Hochschild (April 29, 1915 in Berlin – July 8, 2010 in El Cerrito, California) was a German-born American mathematician who worked on Lie groups, algebraic groups, homological algebra and algebraic number theory.
Early life.
On April 29, 1915, Hochschild was born in Berlin, Germany. Hochschild's father was a patent attorney who had an engineering degree. Hochschild had an older brother.
Education.
In 1936, Hochschild earned a BS degree in mathematics from University of Cape Town in Union of South Africa. In 1937, Hochschild earned a MS degree in mathematics from University of Cape Town.
In 1941, Hochschild earned his PhD in mathematics from Princeton University. Hochschild completed his thesis in 1941 at Princeton University with Claude Chevalley on "Semisimple Algebras and Generalized Derivations".
Career.
In 1956–7 Hochschild was at the Institute for Advanced Study. Hochschild was a professor at University of Illinois at Urbana-Champaign. In the late 1950s Hochschild was a professor at University of California, Berkeley.
 introduced Hochschild cohomology, a cohomology theory for algebras, which classifies deformations of algebras. introduced cohomology into class field theory. Along with Bertram Kostant and Alex F. T. W. Rosenberg, the Hochschild–Kostant–Rosenberg theorem is named after him.
Among his students were Andrzej Białynicki-Birula and James Ax.
In 1955, Hochschild was a Guggenheim Fellow. In 1979 Hochschild was elected to the National Academy of Sciences, and in 1980 he was awarded the Leroy P. Steele Prize of the AMS.
In 1982, Hochschild retired but continued teaching part-time until 1985.
Personal life.
Hochschild's wife was Ruth. Hochschild's children are Ann Hochschild and Peter Hochschild.
On July 8, 2010, Hochschild died at his home. Hochschild was 95.