Colloquium
Upcoming Seminar
September 29,
4:30 PM
in
Physics 123
Student research projects
Most Thursday afternoons during the academic year, the Reed College Department of Mathematics hosts a math talk. The talks are directed to our mathematics majors but are usually accessible on a variety of levels. Refreshments are served before the talks.
201617 Schedule
Fall
4:305:20pm in Physics 123 (unless marked otherwise). Directions to Reed.
Sept 1  Meeting with majors. 

Sept 8  Private Data Analysis Adam Groce, Mathematics Department, Reed College Today governments, universities, hospitals, and companies all maintain huge databases of private information. That information, if it could be analyzed, holds the key to a remarkable array of potential discoveries in medicine, social science, and other areas. However, the private nature of the data limits much of this analysis. The field of private data analysis seeks to provide tools for analyzing such data while protecting privacy. However, before such tools can be created, it is necessary to formally define the desired notion of "privacy." We will begin by talking about what definition is appropriate, and then we will look at how certain analyses can be carried out under the constraint of protecting privacy. Finally, I'll give a brief overview of recent developments in this field and what sort of challenges remain to be solved.

Sept 15  Set Theory via the Polynomial Method Joe Buhler, CCR/Reed College 
Sept 22  A Curious Monoid Keith Pardue, NSA I will describe a curious monoid* \(U\) whose elements are certain trees with colored leaves. My collaborator and I discovered this monoid through a speculation in category theory, and we were surprised and enchanted by the rich combinatorial structure that we found. I'll finish with a basic question about \(U\) that we have not been able to resolve. * A monoid is a set \(M\) with a binary operation \(M\times M\to M\) that is associative and has an identity. Elements of a monoid need not have inverses, as they must have in a group. 
Sept 29  Student research projects 
Oct 6  Paramodularity computations for squarefree level Jerry Shurman, Department of Mathematics, Reed College The Paramodularity Conjecture of Brumer and Kramer is a degree \(2\) modularity conjecture. The analytic space in the conjecture is \({\mathcal S}_2(\operatorname{K}(N))\), the space of weight \(2\), level \(N\) Siegel paramodular cusp forms. Earlier computational work confirmed the conjecture for prime \(N\) up to \(600\), and now new work has confirmed it for nonprime squarefree \(N\) up to \(300\). The interesting new cases are \( N=249, 295\), where one form exists beyond the additive (Gritsenko) lift space of the Jacobi form space \(\operatorname{J}_{2,N}^{\rm cusp}\), as predicted by the existence of suitable abelian surfaces for those \(N\), the relevant arithmetic objects. 
Oct 13  MNS/STEM TBA 
Oct 20  Fall break 
Oct 27  TBA Natalie Hobson, Department of Mathematics, University of Georgia 
Nov 3  TBA Mona Merling, Department of Mathematics, Johns Hopkins University 
Nov 10  TBA Olya Mandelshtam, Department of Mathematics, UCLA 
Nov 17  TBA Alexander Dimitrov, Department of Mathematics and Statistics, Washington State University, Vancouver 
Nov 24  Thanksgiving 
Dec 1  TBA Doug Nychka, National Center for Atmospheric Research 
Spring
4:305:20pm in P123 (unless marked otherwise). Directions to Reed.
Jan 26  TBA Muthuramakrishnan Venkitasubramaniam, Department of Computer Science, University of Rochester 

Feb 2  TBA Mark Sapir, Department of Mathematics, Vanderbilt University 
Feb 9  TBA 
Feb 16  TBA 
Feb 23  TBA Anurag Singh, Department of Mathematics, University of Utah 
Mar 2  TBA 
Mar 9  TBA Lyudmila Korobenko, UPenn/Reed College 
Mar 16  Spring break 
Mar 23  TBA 
Mar 30  TBA David Ayala, Montana State University 
Apr 6  TBA 
Apr 13  TBA 
Apr 20  TBA 
Apr 27  TBA 