Walter Gautschi is a Swiss-American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

, known for his contributions to numerical analysis

Numerical analysis

Numerical analysis is the study of algorithms that use numerical approximation for the problems of mathematical analysis ....

. He has authored over 150 papers in his
area and published two books.

Born in Basel

Basel

Basel or Basle In the national languages of Switzerland the city is also known as Bâle , Basilea and Basilea is Switzerland's third most populous city with about 166,000 inhabitants. Located where the Swiss, French and German borders meet, Basel also has suburbs in France and Germany...

, he has a Ph.D.

Ph.D.

A Ph.D. is a Doctor of Philosophy, an academic degree.Ph.D. may also refer to:* Ph.D. , a 1980s British group*Piled Higher and Deeper, a web comic strip*PhD: Phantasy Degree, a Korean comic series* PhD Docbook renderer, an XML renderer...

 in mathematics

Mathematics

Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...

 from the University of Basel

University of Basel

The University of Basel is located in Basel, Switzerland, and is considered to be one of leading universities in the country...

 on the thesis Analyse graphischer Integrationsmethoden advised by Alexander Ostrowski

Alexander Ostrowski

Alexander Markowich Ostrowski , was a mathematician.His father Mark having been a merchant, Alexander Ostrowski attended the Kiev College of Commerce, not a high school, and thus had an insufficient qualification to be admitted to university...

 and Andreas Speiser

Andreas Speiser

Andreas Speiser was a Swiss Mathematician and Philosopher of Science.-Life and work:Speiser studied since 1904 in Göttingen notably with David Hilbert, Felix Klein, Hermann Minkowski. In 1917 he became full time professor at the University of Zurich but later relocated in Basel...

 (1953).
Since then, he did postdoctoral work as a Janggen-Pöhn Research
Fellow at the Istituto Nazionale per le Applicazioni del Calcolo in Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 (1954) and at the Harvard Computation Laboratory (1955).
He had positions at National Bureau of Standards (1956-59),
the American University

American University

American University is a private, Methodist, liberal arts, and research university in Washington, D.C. The university was chartered by an Act of Congress on December 5, 1892 as "The American University", which was approved by President Benjamin Harrison on February 24, 1893...

 in Washington D.C.,
the Oak Ridge National Laboratory

Oak Ridge National Laboratory

Oak Ridge National Laboratory is a multiprogram science and technology national laboratory managed for the United States Department of Energy by UT-Battelle. ORNL is the DOE's largest science and energy laboratory. ORNL is located in Oak Ridge, Tennessee, near Knoxville...

 (1959-63) before joining
Purdue University

Purdue University

Purdue University, located in West Lafayette, Indiana, U.S., is the flagship university of the six-campus Purdue University system. Purdue was founded on May 6, 1869, as a land-grant university when the Indiana General Assembly, taking advantage of the Morrill Act, accepted a donation of land and...

 where he has worked since (1963-2000) and now being
professor emeritus.
Visiting, he has been Fulbright Scholar at the Technical University of Munich

Technical University of Munich

The Technische Universität München is a research university with campuses in Munich, Garching, and Weihenstephan...

 (1970),
University of Wisconsin–Madison

University of Wisconsin–Madison

The University of Wisconsin–Madison is a public research university located in Madison, Wisconsin, United States. Founded in 1848, UW–Madison is the flagship campus of the University of Wisconsin System. It became a land-grant institution in 1866...

 (1976), Argonne National Laboratory

Argonne National Laboratory

Argonne National Laboratory is the first science and engineering research national laboratory in the United States, receiving this designation on July 1, 1946. It is the largest national laboratory by size and scope in the Midwest...

, the Wright-Patterson Air Force Base

Wright-Patterson Air Force Base

Wright-Patterson Air Force Base is a United States Air Force base in Greene and Montgomery counties in the state of Ohio. It includes both Wright and Patterson Fields, which were originally Wilbur Wright Field and Fairfield Aviation General Supply Depot. Patterson Field is located approximately...

,
ETH Zurich

ETH Zurich

The Swiss Federal Institute of Technology Zurich or ETH Zürich is an engineering, science, technology, mathematics and management university in the City of Zurich, Switzerland....

 (1996-2001), the University of Padova (1997), and the University of Basel

University of Basel

The University of Basel is located in Basel, Switzerland, and is considered to be one of leading universities in the country...

(2000).

Books

• Colloquium approximatietheorie, MC Syllabus 14, Mathematisch Centrum Amsterdam, 1971. With H. Bavinck and G. M. Willems
• Numerical analysis: an introduction, Birkhäuser, Boston, 1997
• Orthogonal polynomials: computation and approximation, Oxford University Press, Oxford, 2004.