# Peter Henrici (mathematician)

Peter Karl Henrici | |
---|---|

Peter Henrici (middle), Washington D.C. 1953 | |

Born |
Basel, Switzerland | 13 September 1923

Died |
13 March 1987 63) Zürich, Switzerland | (aged

Nationality | Switzerland |

Alma mater | ETH Zürich |

Known for | Numerical analysis |

Scientific career | |

Fields | Mathematics |

Institutions | University of California, Los Angeles; ETH Zürich; University of North Carolina at Chapel Hill |

Doctoral advisor | Eduard Stiefel |

Doctoral students | Gilbert Strang, William B. Gragg |

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

## Life

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).

### Moving to the USA

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.^{[1]}^{[2]}

### Numerical Analyst

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.^{[1]} 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.^{[2]}

## Peter Henrici Prize

Every four years since 1999, the Peter Henrici Prize is awarded by ETH Zürich and SIAM for "original contributions to applied analysis and numerical analysis and/or for exposition appropriate for applied mathematics and scientific computing".^{[3]}

## Publications

- Henrici, Peter (1962).
*Discrete variable methods in ordinary differential equations*. Wiley.

- Henrici, Peter (1963).
*Error propagation for difference methods*. SIAM series in applied mathematics. Wiley.

- Henrici, Peter (1964).
*Elements of numerical analysis*. Wiley.

- Henrici, Peter (1974).
*Applied and computational complex analysis, Volume 1: Power series—integration—conformal mapping—location of zeros*. Wiley. ISBN 0-471-37244-7.

- Henrici, Peter (1977).
*Applied and computational complex analysis, Volume 2: Special functions—integral transforms—asymptotics—continued fractions*. Wiley. ISBN 0-471-01525-3. - Henrici, Peter (1977).
*Computational Analysis with the HP-25 Pocket Calculator*. Wiley. ISBN 0-471-02938-6. - Henrici, Peter (1986).
*Applied and computational complex analysis, Volume 3: Discrete Fourier analysis—Cauchy integrals—construction of conformal maps—univalent functions*. Wiley. ISBN 0-471-08703-3.

## References

- 1 2 Golub, Gene H.; Varga, Richard S. (1988). "Obituary to Peter Henrici (13 September 1923 – 13 March 1987)".
*Numerische Mathematik*.**52**(5): 481–482. doi:10.1007/BF01400886. - 1 2 O'Connor, John J.; Robertson, Edmund F., "Peter K. Henrici",
*MacTutor History of Mathematics archive*, University of St Andrews. - ↑ "Peter Henrici Prize (with ETH Zurich)". Society for Industrial and Applied Mathematics. Retrieved 2 June 2011.