Previous Conferences & Workshops

Jan
20
2017

Homological Mirror Symmetry (Mini-Course)

Constructible sheaves in mirror symmetry
10:45am|S-101

I will survey the coherent-constructible correspondence of Bondal, which embeds the derived category of coherent sheaves on a toric variety into the derived category of constructible sheaves on a compact torus. The tools of the first lecture turn...

Jan
18
2017

Homological Mirror Symmetry (Mini-Course)

Constructible sheaves in symplectic topology
10:45am|S-101

I will give an introduction to the microlocal theory of sheaves after Kashiwara and Schapira, and some of its recent applications in symplectic topology. I'll start with the basics, but target applications for the 75 minutes are Tamarkin's proof of...

Jan
17
2017

Computer Science/Discrete Mathematics Seminar II

The polynomial method: more results and open questions
Jordan Ellenberg
11:35am|S-101

This will be a bit of a "grab bag" talk where I discuss some results and open questions in combinatorial geometry which are either approachable by the polynomial method or which I hope are approachable by the polynomial method! I will talk about...

Jan
17
2017

Computer Science/Discrete Mathematics Seminar I

The polynomial method and the cap set problem
Jordan Ellenberg
10:30am|S-101

The "cap set problem" asks for the size of the largest subset $S$ of the vector space $\mathbb F_3^n$ containing no three elements summing to 0. Progress on this problem was slow for many years, until the spring of 2016, when a very short argument...

Jan
16
2017

Members’ Seminar

No seminar today: MLK Jr. Day
No seminar today: MLK Jr. Day
2:00pm|S-101
Dec
16
2016

Homological Mirror Symmetry (Mini-Course)

Numerical invariants from bounding chains
10:45am|S-101

I'll begin with a leisurely introduction to Fukaya A-infinity algebras and their bounding chains. Then I'll explain how to use bounding chains to define open Gromov-Witten invariants. The bounding chain invariants can be computed using an open...