David M. Young, Jr.
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David M. Young Jr. (October 20, 1923 – December 21, 2008) was an American
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 ...
and
computer scientist A computer scientist is a person who is trained in the academic study of computer science. Computer scientists typically work on the theoretical side of computation, as opposed to the hardware side on which computer engineers mainly focus (al ...
who was one of the pioneers in the field of modern numerical analysis/scientific computing.


Contributions

Dr. Young is best known for establishing the mathematical framework for iterative methods (a.k.a.
preconditioning In mathematics, preconditioning is the application of a transformation, called the preconditioner, that conditions a given problem into a form that is more suitable for numerical solving methods. Preconditioning is typically related to reducing ...
). These
algorithms In mathematics and computer science, an algorithm () is a finite sequence of rigorous instructions, typically used to solve a class of specific problems or to perform a computation. Algorithms are used as specifications for performing c ...
are now used in computer software on high performance supercomputers for the numerical solution of large sparse linear systems arising from problems involving
partial differential equations In mathematics, a partial differential equation (PDE) is an equation which imposes relations between the various partial derivatives of a multivariable function. The function is often thought of as an "unknown" to be solved for, similarly to ...
. See, in particular, the successive over-relaxation (SOR) and symmetric successive over-relaxation (SSOR) methods.. When David Young first began his research on iterative methods in the late 1940s, there was some skepticism with the idea of using iterative methods on the new computing machines to solve industrial-size problems. Ever since Young's ground-breaking Ph.D. thesis, iterative methods have been used on a wide range of scientific and engineering applications with a variety of new iterative methods having been developed.


Education and career

David Young earned a bachelor's degree in 1944 from the
Webb Institute of Naval Architecture Webb Institute is a private college focused on engineering and located in Glen Cove, New York. Each graduate of Webb Institute earns a Bachelor of Science degree in naval architecture and marine engineering. Successful candidates for admission r ...
. After service in the U.S. Navy during part of World War II, he went to
Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...
to study mathematics and was awarded a master's degree in 1947 and a Ph.D in 1950, working under the supervision of Professor Garrett Birkhoff. Young began his academic career at the
University of Maryland, College Park The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of Mary ...
and he was the first to teach a mathematics course focusing mainly on
numerical analysis Numerical analysis is the study of algorithms that use numerical approximation (as opposed to symbolic computation, symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). It is the study of ...
and computer programming.. After several years working in the aero-space industry in Los Angeles, he joined the faculty of the
University of Texas at Austin The University of Texas at Austin (UT Austin, UT, or Texas) is a public research university in Austin, Texas. It was founded in 1883 and is the oldest institution in the University of Texas System. With 40,916 undergraduate students, 11,075 ...
,
Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
, in 1958. Dr. Young was the founding Director of the university Computation Center and then the research Center for Numerical Analysis (CNA) in 1970. He would become the Ashbel Smith
Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who pr ...
of Mathematics and Computer Sciences as well as a founding member of the
Institute for Computational Engineering and Sciences The Oden Institute for Computational Engineering and Sciences is an interdisciplinary research unit and graduate program at The University of Texas at Austin dedicated to advancing computational science and engineering through a variety of progra ...
(ICES), all at the University of Texas at Austin.


Awards and honors

Professor David Young was awarded the title:
Fellow A fellow is a concept whose exact meaning depends on context. In learned or professional societies, it refers to a privileged member who is specially elected in recognition of their work and achievements. Within the context of higher education ...
of the
American Association for the Advancement of Science The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific respons ...
. He was honored by the
Association for Computing Machinery The Association for Computing Machinery (ACM) is a US-based international learned society for computing. It was founded in 1947 and is the world's largest scientific and educational computing society. The ACM is a non-profit professional member ...
(ACM) in 1990 for "outstanding contributions to computer science". In October 1988, the first IMACS International Conference on Iterative Method was held in Austin, Texas, in honor of Young's 65th birthday. The book Iterative Methods for Large Linear Systems (David R. Kincaid and Linda J. Hayes, eds., Academic Press, 1990) contains the invited presentations. A special issue of the Journal of Linear Algebra and Its Applications was dedicated to Young for his 70th birthday. In 1998, the fourth IMACS Iterative Conference was held at the University of Texas at Austin in special recognition of Young's 75th birthday and Richard Varga's 70th birthday. In 2000, a symposium was given at the
SIAM Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Mainland Southeast Asia, Indochinese Peninsula, spanning , with a population of almost 70 mi ...
Annual Meeting in Puerto Rico on the occasion of the 50th anniversary of Young's publication of the SOR method.


Selected publications


Articles

* * * * * * * * * *


Books

* ''A Survey of Numerical Mathematics'' (with Robert Todd Gregory), Vol. 1-2, Addison-Wesley, 1973. (reprinted by Dover, 1988
vol. 1
& vol. 2) * ''Iterative Solution of Large Linear Systems'', Academic Press, 1971. (reprinted by Dover, 2003)
2014 pbk edition, Elsevier
* ''Applied Iterative Methods'' (with Louis A. Hageman), Academic Press, 1981. (reprinted by Dover, 2004)
2016 pbk edition, Elsevier


References


External links

*
Young's web site
from University of Texas Mathematic Department
Obituary
from SIAM Newsletter (March 2009)

from NA Digest (January 2009) {{DEFAULTSORT:Young, David M. 1923 births 2008 deaths 20th-century American mathematicians Harvard Graduate School of Arts and Sciences alumni University of Texas at Austin faculty Numerical analysts Webb Institute alumni 21st-century American mathematicians