Peter Henrici (mathematician)

Peter Karl Henrici
Peter Henrici (middle), Washington D.C. 1953
Born	(1923-09-13)13 September 1923 Basel, Switzerland
Died	13 March 1987(1987-03-13) (aged 63) Zürich, Switzerland
Nationality	Switzerland
Fields	Mathematics
Institutions	University of California, Los Angeles; ETH Zürich; University of North Carolina at Chapel Hill
Alma mater	ETH Zürich
Doctoral advisor	Eduard Stiefel
Doctoral students	Gilbert Strang, M. Stuart Lynn, William B. Gragg
Known for	Numerical analysis

Peter Karl Henrici (13 September 1923 – 13 March 1987) was a Swiss mathematician best known for his contributions to the field of numerical analysis.

Henrici was born in Basel and studied law for two years at University of Basel. After World War II he transferred to ETH Zürich where he received a diploma in electrical engineering (1948) and a doctorate in mathematics with Eduard Stiefel as his advisor (1952).

In 1951 he moved to the United States and worked on a joint contract with American University and the National Bureau of Standards. Then, from 1956 to 1962, he taught at University of California, Los Angeles where he became a professor. In 1962 he returned to ETH Zürich as a professor, a position he kept for the rest of his life, though he also held a part-time appointment as William R. Kenan, Jr. Distinguished Professor of Mathematics at the University of North Carolina at Chapel Hill from 1985.

An internationally recognized numerical analyst, who published 11 books and more than 80 research papers, Henrici was also a gifted pianist and a highly regarded teacher. He was an editor of a number of scientific journals, including Numerische Mathematik and Zeitschrift für Angewandte Mathematik und Physik. In 1962, he was a speaker at the International Congress of Mathematicians, and in 1978 he gave the SIAM John von Neumann Lecture.