2007
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Joel Brewster Lewis. I am an Associate Professor in the Mathematics Department at George Washington University. I received my Ph.D. at MIT in 2012 under the guidance of Alex Postnikov and worked for several years as a post-doc in the combinatorics group at the University of Minnesota before coming to GW in 2017.
Joel Lewis is an Associate Professor of Mathematics at The George Washington University. Previously, was a post-doc in the School of Mathematics at the University of Minnesota, Twin Cities (2012–17) and an Assistant Professor at GW (2017–21).
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Directional derivatives for functions of two variables. (Image courtesy of John B. Lewis.) This course covers differential, integral and vector calculus for functions of more than one variable. These mathematical tools and methods are used extensively in the physical sciences, engineering, economics and computer graphics.
Joel Brewster Lewis, Eric Marberg. Comments: 44 pages; v2: several corrections and improved exposition. Journal-ref: Forum of Mathematics, Sigma (2024), Vol. 12, Paper e22. Subjects: Combinatorics (math.CO); K-Theory and Homology (math.KT); Representation Theory (math.RT)
ON A FAMILY OF CONJECTURES OF JOEL LEWIS ON ALTERNATING PERMUTATIONS MIKLOS B´ ONA´ Abstract. We prove generalized versions of some conjectures of Joel Lewis on the number of alternating permutations avoiding certain pat-terns. Our main tool is the perhaps surprising observation that a classic
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- Morgan Stanley
