Nationality American Role Mathematician Doctoral advisor Joseph L. Walsh Fields Applied mathematics | Influenced by Garrett Birkhoff Name Richard Varga | |
Born Richard Steven Varga
October 9, 1928 (age 95)
Cleveland, Ohio, USA ( 1928-10-09 ) Institutions Bettis Atomic Power Laboratory
Case Western Reserve University
Kent State University Alma mater Case Institute of Technology
Harvard University Known for Numerical analysis
Experimental mathematics
Complex analysis
1/9th Conjecture
Pade approximation
Matrix theory Residence Parma, Ohio, United States Education Harvard University (1954), Case Western Reserve University Awards Guggenheim Fellowship for Natural Sciences, US & Canada Books Matrix iterative analysis, Functional Analysis and Appr, Geršgorin and his circles, Zeros of Sections of Power Se, Scientific Computation on Mathe | ||
Doctoral students Philippe G. Ciarlet | ||
Richard Steven Varga (; born October 9, 1928) is an American mathematician who specializes in numerical analysis and linear algebra. He is currently an Emeritus University Professor of Mathematical Sciences at Kent State University and an adjunct Professor at Case Western Reserve University. Varga is known for his contributions to many areas of mathematics, including matrix analysis, complex analysis, approximation theory, and scientific computation. He is the author of the classic textbook Matrix Iterative Analysis. Varga has been the Editor-in-Chief of the journal Electronic Transactions on Numerical Analysis (ETNA).
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Birth and education
Richard Varga was born in Cleveland, Ohio of Hungarian-born parents in 1928. He obtained a bachelor's degree in mathematics from Case Institute of Technology (present Case Western Reserve University) in 1950. Varga was a member of the collegiate wrestling team of Case.
Following the advice of Professor Max Morris at Case, Varga joined Harvard University for the master's degree and obtained an A.M. in mathematics. Continuing his doctoral work at Harvard under the supervision of Joseph L. Walsh, Varga worked on the theory of rational approximation of complex analytic functions. Varga received his Ph.D. degree in 1954 with a dissertation Properties of a Special Set of Entire Functions and their Respective Partial Sums.
While at Harvard, Varga also studied with Garrett Birkhoff, who later came to collaborate with Varga in research both on iterative methods for differential equations and on positive matrices (and positive operators on partially ordered vector spaces).
Career
From 1954 until 1960, Varga worked for Bettis Atomic Power Laboratory in Pittsburgh. In 1960 he returned to Case Institute of Technology as a Professor of mathematics and remained there for the next nine years. He then moved to Kent State University as University Professor of mathematics. At Kent Varga has held numerous academic positions, including Director (1980–1988) and Research Director (1988–2006) of the Institute for Computational Mathematics. His work includes numerical analysis—particularly iterative methods in numerical linear algebra, matrix theory, and differential equations—complex approximation theory, particularly Padé approximation (often with Edward B. Saff, Jr.)—and analytic number theory, including high-precision calculations related to the Riemann hypothesis. He is also known for advocating experimentation in mathematics, and for writing a monograph surveying his contributions on scientific computing to resolve open problems and conjectures.
Awards and honors
In 2012 he became a fellow of the American Mathematical Society.