Howard Jerome Keisler cover

photo credits: CC-BY-SA-4.0

Howard Jerome Keisler

American mathematician

1936   -  

country of citizenship: United States of America
educated at: University of California, Berkeley
occupation: mathematician, university teacher
award received: John Simon Guggenheim Memorial Foundation Fellowship, Fellow of the American Mathematical Society
www.math.wisc.edu/~keisler

Howard Jerome Keisler (born 3 December 1936) is an American mathematician, currently professor emeritus at University of Wisconsin–Madison. His research has included model theory and non-standard analysis. His Ph.D. advisor was Alfred Tarski at Berkeley; his dissertation is Ultraproducts and Elementary Classes (1961). Following Abraham Robinson's work resolving what had long been thought to be inherent logical contradictions in the literal interpretation of Leibniz's notation that Leibniz himself had proposed, that is, interpreting "dx" as literally representing an infinitesimally small quantity, Keisler published Elementary Calculus: An Infinitesimal Approach, a first-year calculus textbook conceptually centered on the use of infinitesimals, rather than the epsilon, delta approach, for developing the calculus. He is also known for extending the Henkin construction (of Leon Henkin) to what are now called Henkin–Keisler models.He held the named chair of Vilas Professor of Mathematics at Wisconsin. Among Keisler's graduate students, several have made notable mathematical contributions, including Frederick Rowbottom who discovered Rowbottom cardinals. Several others have gone on to careers in computer science research and product development, including: Michael Benedikt, a professor of computer science at the University of Oxford, Kevin J. Compton, a professor of computer science at the University of Michigan, Curtis Tuckey, a developer of software-based collaboration environments; Joseph Sgro, a neurologist and developer of vision processor hardware and software, and Edward L. Wimmers, a database researcher at IBM Almaden Research Center. In 2012 he became a fellow of the American Mathematical Society.His son Jeffrey Keisler is a Fulbright Distinguished Chair.
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