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Freydoon Shahidi (born June 19, 1947) is an
Iranian American Iranian Americans are United States citizens or nationals who are of Iranian ancestry or who hold Iranian citizenship. Iranian Americans are among the most highly educated people in the United States. They have historically excelled in busin ...
mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...
who is a Distinguished Professor of Mathematics at
Purdue University Purdue University is a public land-grant research university in West Lafayette, Indiana, and the flagship campus of the Purdue University system. The university was founded in 1869 after Lafayette businessman John Purdue donated land and money ...
in the U.S. He is known for a method of automorphic
L-function In mathematics, an ''L''-function is a meromorphic function on the complex plane, associated to one out of several categories of mathematical objects. An ''L''-series is a Dirichlet series, usually convergent on a half-plane, that may give ris ...
s which is now known as the
Langlands–Shahidi method In mathematics, the Langlands–Shahidi method provides the means to define automorphic L-functions in many cases that arise with connected reductive groups over a number field. This includes Rankin–Selberg products for cuspidal automorphic rep ...
.F. Shahidi, ''Eisenstein Series and Automorphic L-functions'', Colloquium Publications, Vol. 58, American Mathematical Society, Providence, Rhode Island, 2010.


Education and career

Shahidi graduated from the
University of Tehran The University of Tehran (Tehran University or UT, fa, دانشگاه تهران) is the most prominent university located in Tehran, Iran. Based on its historical, socio-cultural, and political pedigree, as well as its research and teaching pro ...
with a bachelor's degree in 1969. He received his Ph.D. in 1975 from
Johns Hopkins University Johns Hopkins University (Johns Hopkins, Hopkins, or JHU) is a private university, private research university in Baltimore, Maryland. Founded in 1876, Johns Hopkins is the oldest research university in the United States and in the western hem ...
with dissertation ''On Gauss Sums Attached to the Pairs and the Exterior Powers of the Representations of the General Linear Groups over Finite and Local Fields'' with advisor
Joseph Shalika Joseph Andrew Shalika (June 25, 1941 – September 18, 2010) was a mathematician working on automorphic forms and representation theory, who introduced the multiplicity-one theorem. He was a member of the Institute for Advanced Study The ...
. As a postdoc Shahidi was for the academic year 1975–1976 at the
Institute for Advanced Study The Institute for Advanced Study (IAS), located in Princeton, New Jersey, in the United States, is an independent center for theoretical research and intellectual inquiry. It has served as the academic home of internationally preeminent scholar ...
and for the academic year 1976–1977 a visiting assistant professor at
Indiana University Indiana University (IU) is a system of public universities in the U.S. state of Indiana. Campuses Indiana University has two core campuses, five regional campuses, and two regional centers under the administration of IUPUI. *Indiana Universit ...
in Bloomington. At Purdue University he became in 1977 an assistant professor, in 1982 an associate professor, and 1986 a full professor. There he since 2001 is a Distinguished Professor. He returned to the Institute for Advanced Study in 1983–1984, in 1990–1991, in October–November 1999, and in several other brief visits. He has held visiting positions from 1981 to 1982 at the
University of Toronto The University of Toronto (UToronto or U of T) is a public research university in Toronto, Ontario, Canada, located on the grounds that surround Queen's Park. It was founded by royal charter in 1827 as King's College, the first institution ...
, in June 1990 at the
University of Paris VII A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, t ...
, in May 1993 and again in February 1997 as a Fellow of the Japan Society for the Promotion of Science at Kyōto University, in June–July 1993 at the
Catholic University of Eichstätt-Ingolstadt The Katholische Universität Eichstätt-Ingolstadt (KU) is a Roman Catholic research university in Eichstätt and Ingolstadt, Bavaria, Germany. Compared to other German universities it is a rather small institution with 4,800 students in 2019; n ...
, in May–June 1995 at the
École normale supérieure École may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * École, Savoi ...
, and at several other institutions. Shahidi was a
Guggenheim Fellow Guggenheim Fellowships are grants that have been awarded annually since by the John Simon Guggenheim Memorial Foundation to those "who have demonstrated exceptional capacity for productive scholarship or exceptional creative ability in the ar ...
for the academic year 2001–2002. He as in 2002 an Invited Speaker at the
International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the Nevanlinna Prize (to be rename ...
in
Beijing } Beijing ( ; ; ), alternatively romanized as Peking ( ), is the capital of the People's Republic of China. It is the center of power and development of the country. Beijing is the world's most populous national capital city, with over 21 ...
with talk ''Automorphic L-functions and functoriality''. He is a member of the
American Academy of Arts and Sciences The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and ...
since 2010. In 2012 he became a fellow of the
American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...
.List of Fellows of the American Mathematical Society
retrieved 2013-07-18. He is a member of the editorial board of the ''
American Journal of Mathematics The ''American Journal of Mathematics'' is a bimonthly mathematics journal published by the Johns Hopkins University Press. History The ''American Journal of Mathematics'' is the oldest continuously published mathematical journal in the United ...
''.


Selected publications


Eisenstein Series and Automorphic L-Functions
AMS Colloquium Publications 58, 2010
Functional Equation Satisfied by Certain L-Functions
Compositio Math., vol. 37, 1978, 171–208.
On certain L-functions
American Journal of Mathematics, vol. 103, 1981, 297–355. * A proof of Langlands conjecture on Plancherel measures; Complementary series for p-adic groups, Annals of Mathematics, Band 132, 1990, 273–330
Local coefficients as Artin L-factors for real groups
Duke Math. J., vol. 52, 1985, 973–1007 * with
Stephen Gelbart Stephen Samuel Gelbart (born June 12, 1946) is an American-Israeli mathematician who holds the Nicki and J. Ira Harris Professorial Chair in mathematics at the Weizmann Institute of Science in Israel.
: Boundedness of automorphic L-functions in vertical strips, Journal of the American Mathematical Society, vol. 14, 2001, 79–107. * mit H. H. Kim: Functorial products for GL(2) × GL(3) and the symmetric cube for GL(2), Annals of Mathematics, vol. 155, 2002, 837–893.
On nonvanishing of L-functions
Bull. Amer. Math. Soc. (N.S.), vol. 2, 1980, 462–464. * On the Ramanujan conjecture and finiteness of poles of certain L-functions, Annals of Mathematics, vol. 127, 1988, 547–584 * The notion of norm and the representation theory of orthogonal groups, Inventiones mathematicae, vol. 119, 1995, 1–36


References


External links


Freydoon Shahidi (with CV & publication list)
Purdue University {{DEFAULTSORT:Shahidi, Freydoon 20th-century Iranian mathematicians Purdue University faculty Living people Date of birth missing (living people) Number theorists 1947 births Fellows of the American Mathematical Society Fellows of the American Academy of Arts and Sciences 21st-century Iranian mathematicians