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Richard Askey

American mathematician (1933–2019)

Richard Askey

Summary

American mathematician (1933–2019)

FieldValue
nameRichard Askey
imageRichard Askey.jpg
captionRichard Askey in 1977
birth_nameRichard Allen Askey
birth_date
birth_placeSt. Louis, Missouri
death_date
death_placeMadison, Wisconsin
resting_placeForest Hill Cemetery
fieldsMathematics
workplacesUniversity of Chicago
University of Wisconsin–Madison
alma_materWashington University in St. Louis
Harvard University
Princeton University
doctoral_advisorSalomon Bochner
doctoral_studentsJames A. Wilson
known_forAskey–Wilson polynomials
Askey–Gasper inequality
signature

University of Wisconsin–Madison Harvard University Princeton University Askey–Gasper inequality

Richard Allen Askey (June 4, 1933 – October 9, 2019) was an American mathematician, known for his expertise in the area of special functions. The Askey–Wilson polynomials (introduced by him in 1984 together with James A. Wilson) are on the top level of the (q-)Askey scheme, which organizes orthogonal polynomials of (q-)hypergeometric type into a hierarchy. The Askey–Gasper inequality for Jacobi polynomials is essential in de Brange's famous proof of the Bieberbach conjecture.

Biography

Askey earned a B.A. at Washington University in St. Louis in 1955, an M.A. at Harvard University in 1956, and a Ph.D. at Princeton University in 1961. After working as an instructor at Washington University (1958–1961) and University of Chicago (1961–1963), he joined the faculty of the University of Wisconsin–Madison in 1963 as an Assistant Professor of Mathematics. He became a full professor at Wisconsin in 1968, and since 2003 was a professor emeritus. Askey was a Guggenheim Fellow, 1969–1970, which academic year he spent at the Mathematisch Centrum in Amsterdam. In 1983, he gave an invited lecture at the International Congress of Mathematicians (ICM) in Warsaw. He was elected a Fellow of the American Academy of Arts and Sciences in 1993. In 1999, he was elected to the National Academy of Sciences. In 2009, he became a fellow of the Society for Industrial and Applied Mathematics (SIAM). In 2012, he became a fellow of the American Mathematical Society. In December 2012, he received an honorary doctorate from SASTRA University in Kumbakonam, India.

Askey's grave at Forest Hill Cemetery

Askey explained why hypergeometric functions appear so frequently in mathematical applications: "Riemann showed that the requirement that a differential equation have regular singular points at three given points and every other complex point is a regular point is so strong a restriction that (Riemann's) differential equation is the hypergeometric equation with the three singularities moved to the three given points. Differential equations with four or more singular points only infrequently have a solution which can be given explicitly as a series whose coefficients are known, or have an explicit integral representation. This partly explains why the classical hypergeometric function arises in many settings that seem to have nothing to do with each other. The differential equation they satisfy is the most general one of its kind that has solutions with many nice properties".

Askey was also very much involved with commenting and writing on mathematical education at American schools. A well-known article by him on this topic is "Good Intentions are not Enough".

He died in Madison, Wisconsin on October 9, 2019, and was buried at Forest Hill Cemetery.

Works

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References

References

  1. (2019-10-27). "Askey, Richard Allen 'Dick'". [[Wisconsin State Journal]].
  2. "Book of Members, 1780–2010: Chapter A". American Academy of Arts and Sciences.
  3. "In Memoriam: Richard Askey | Department of Mathematics".
  4. {{MathGenealogy
  5. "Six Retirees Feted at Faculty and Staff Dinner, 2004 Van Vleck Notes".
  6. [http://www.mathunion.org/db/ICM/Speakers/ ICM Plenary and Invited Speakers] {{webarchive. link. (2012-12-06)
  7. [http://www-history.mcs.st-and.ac.uk/Biographies/Askey.html Askey biography]
  8. [http://fellows.siam.org/index.php?sort=year&value=2009 SIAM Fellows: Class of 2009]
  9. [https://www.ams.org/profession/fellows-list List of Fellows of the American Mathematical Society], retrieved 2012-11-03.
  10. [http://lists.siam.org/pipermail/siam-opsf/2013-January/000077.html Honorary doctorates for Andrews, Askey and Berndt]
  11. (30 November 2001). "Special functions: group theoretical aspects and applications". Reidel.
  12. link. (2019-12-06 ''), in ''[https://books.google.com/books/about/The_Great_Curriculum_Debate.html?id=JiW3s0HuH2AC The Great Curriculum Debate: How Should We Teach Reading and Math?]'', T. Loveless (ed.), Brookings Institution Press, Ch. 8, pp. 163–183.)
  13. (2000). "''Special functions'' (review)". [[Bulletin of the American Mathematical Society]].
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