Previous Conferences & Workshops

Feb
12
2016

Augmentations and Legendrians at the IAS

A frontal view on Lefschetz fibrations I
10:40am|S-101

In this series of two talks we will discuss Weinstein structures endowed with a Lefschetz fibration in terms of the Legendrian front projection. The main focus is on Weinstein manifolds which admit a Weinstein Lefschetz fibration with an $A_k$-fibre...

Feb
11
2016

Joint IAS/Princeton University Number Theory Seminar

Statistics of abelian varieties over finite fields
4:30pm|Fine 214, Princeton University

Joint work with Jacob Tsimerman. Let $B(g,p)$ denote the number of isomorphism classes of $g$-dimensional abelian varieties over the finite field of size $p$. Let $A(g,p)$ denote the number of isomorphism classes of principally polarized $g$...

Feb
11
2016

Augmentations and Legendrians at the IAS

Satellite operations and Legendrian knot theory
2:30pm|S-101

Satellite operations are a common way to create interesting knot types in the smooth category. It starts with a knot $K$, called the companion knot, in some manifold $M$ and another knot $P$, called the pattern, in $S^1 \times D^2$ and then creates...

Feb
11
2016

Augmentations and Legendrians at the IAS

Toward a contact Fukaya category
Lenny Ng
1:00pm|S-101

I will describe some work in progress (maybe more accurately, wild speculation) regarding a version of the derived Fukaya category for contact 1-jet spaces $J^1(X)$. This category is built from Legendrian submanifolds equipped with augmentations...

Feb
11
2016

Augmentations and Legendrians at the IAS

Restrictions on the fundamental group of some Lagrangian cobordisms
Baptiste Chantraine
10:40am|S-101

In this talk we will describe two methods which shows that, under some rigidity assumptions on the involved Legendrian submanifolds, a Lagrangian cobordism is simply connected. The first one uses the functoriality of the fundamental class in...

Feb
10
2016

Mathematical Conversations

Hyperbolicity in dynamics
6:00pm|Dilworth Room

"Hyperbolic" ranks highly among the most-abused terms in dynamics. I'll prolong this abuse, and argue for its value, by illustrating a variety of dynamical systems with distinct forms of hyperbolic behavior that have known or conjectured...

Feb
09
2016

Geometric Structures on 3-manifolds

Obstructions to minimal fibrations of hyperbolic 3-manifolds
2:00pm|S-101

Through the work of Agol and Wise, we know that all closed hyperbolic 3-manifolds are finitely covered by a surface bundle over the circle. Thus the geometry of these bundles indicates the geometry of general hyperbolic 3-manifolds. But there are...

Feb
09
2016

Computer Science/Discrete Mathematics Seminar II

The singularity of symbolic matrices
10:30am|S-101

The main object of study of this talk are matrices whose entries are linear forms in a set of formal variables (over some field). The main problem is determining if a given such matrix is invertible or singular (over the appropriate field of...

Feb
08
2016

Special Analysis/Number Theory Seminar

Variance of sums of arithmetic functions over primes in short intervals
Jon Keating
4:30pm|S-101

Goldston & Montgomery and Montgomery & Soundararajan have established formulae for the variance of sums of the von Magoldt function over short intervals (i.e. for the variance of the number of primes in these intervals) assuming, respectively, the...