325 Van Vleck Hall
Department of Mathematics
University of Wisconsin
480 Lincoln Drive
Madison, WI 53706
email: ellenber@math.wisc.edu

I've been at Wisconsin since the fall of 2005. My field is arithmetic algebraic geometry: my specific interests include rational points on varieties, enumeration of number fields and other arithmetic objects, incidence problems and algebraic methods in combinatorial geometry, Galois representations attached to varieties and their fundamental groups, representation stability and FImodules, the geometry of large data sets, nonabelian Iwasawa theory, prop group theory, automorphic forms, stable cohomology of moduli spaces, the complex of curves, HilbertBlumenthal abelian varieties, Qcurves, Serre's conjecture, the ABC conjecture, and Diophantine problems related to all of the above. My research here is partially supported by an NSF grant, a Guggenheim Fellowship, and the Office of the Vice Chancellor for Research and Graduate Education, with funding by the Wisconsin Alumni Research Foundation. I coorganize the Wisconsin number theory seminar. I am also a Discovery Fellow at the Wisconsin Institute for Discovery, where I am part of the Machine Learning group.
TEACHING:
In Fall 2016 I am teaching Math 741, the first semester of graduate algebra.
NEW NEWS:
In May 2017 I am organizing a conference on Braids at ICMS in Edinburgh.
My book How Not To Be Wrong is out now from Penguin Press. See my author page for excerpts, reviews, event dates, and other generalaudience writing. Paperback came out June 2015.
OLD NEWS:
I gave an AMSMAA Invited Address at the 2015 Joint Meetings in San Antonio about combinatorial designs and lottery schemes.
I was an organizer of the conference "Counting arithmetic objects," which will pay special attention to theorems and heuristics for ranks of elliptic curves, at CRM in Montreal, November 2014.
I was one of the speakers at the 2014 Arizona Winter School on arithmetic statistics in March 2014: the topic of my lectures was "Geometric Analytic Number Theory."
I was an organizer of the long program at IPAM on Algebraic Techniques for Combinatorial and Computational Geometry, in MarchJune 2014.
Alina Bucur, Chantal David and I organized a workshop at AIM on Arithmetic Statistics over Finite Fields and Function Fields in January 2014.
Nigel Boston and I organized a oneday miniconference here at UWMadison: Group Theory, Number Theory, and Topology Day, on January 24, 2013. Nathan Dunfield, Alan Reid, and Tamar Ziegler spoke on topics at the interface of the three subjects.
Akshay Venkatesh and I organized a special session with the incredibly specific title of "Geometry and Number Theory" at the 2013 Joint Meetings in San Diego.
In February 2012, I was an organizer of an MSRI Hot Topics workshop on Thin Groups and Superstrong approximation. (Streaming video of talks available behind the link.)
On April 2425, 2010, JeanLuc Thiffeault and I organized a weekend workshop on pseudoAnosovs with small dilatation, a subject that occupies a very interesting interface between topology, dynamics, and arithmetic.
We hosted Midwest Number Theory Day on November 6, 2009, featuring talks by Joe Rabinoff, SugWoo Shin, Kirsten Wickelgren, and Mike Zieve. The following weekend, November 78, we hosted the Sixth Midwest Number Theory Conference for Graduate Students.
I wrote a generalaudience book about math, How Not To Be Wrong, which came out in the summer of 2014 from Penguin Press. A long time ago I wrote a novel called The Grasshopper King, published by Coffee House Press in 2003. I also write the "Do The Math" column in Slate, and have written articles on mathematical topics for The New York Times, The Washington Post, The Wall Street Journal, The Boston Globe, Wired, and The Believer.
I used to live in Princeton, NJ; a popular feature of my old web page was How to Eat Dinner in Princeton. Warning: this page is accurate only up to August 2005.
My current graduate students: Wanlin Li, Eric Ramos, Vlad Matei, Lalit Jain, Daniel Hast, and Daniel Ross. If you are considering joining this learned crew, you should read this page.
My former graduate students:
Barry Mazur's Mathematical Genealogy (no longer updated in light of the Mathematics Genealogy Project)
Back to math department home page
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