Previous Conferences & Workshops

Mar
21
2019

Analysis Seminar

Front propagation in a nonlocal reaction-diffusion equation
1:00pm|Simonyi Hall 101

We consider a reaction-diffusion equation with a nonlocal reaction term. This PDE arises as a model in evolutionary ecology. We study the regularity properties and asymptotic behavior of its solutions.

Mar
20
2019

Mathematical Conversations

from dynamics to contact topology and back
6:00pm|White Levy Room

This is a light survey of the origins of contact topology and its applications to dynamics. We will use anecdotes and images to illustrate ideas.

Mar
20
2019

Symplectic Dynamics/Geometry Seminar

Equivariant and nonequivariant contact homology
2:00pm|Simonyi Hall 101

I will discuss joint work with Hutchings which constructs nonequivariant and a family floer equivariant version of contact homology. Both theories are generated by two copies of each Reeb orbit over Z and capture interesting torsion information. I...

Mar
19
2019

Variational Methods in Geometry Seminar

Multiplicity One Conjecture in Min-max theory
3:30pm|Simonyi Hall 101

I will present a proof with some substantial details of the Multiplicity One Conjecture in Min-max theory, raised by Marques and Neves. It says that in a closed manifold of dimension between 3 and 7 with a bumpy metric, the min-max minimal...

Mar
19
2019

Symplectic Dynamics Working Group

Properties of Feral Pseudoholomorphic Curves
1:30pm|Simonyi Hall Classroom 114

I will discuss some technical details regarding properties of feral pseuodoholomorphic curves, specifically those properties arising from stretching constructions and as components of limit buildings arising from attempts to compactify certain...

Mar
19
2019

Variational Methods in Geometry Seminar

Gap and index estimates for Yang-Mills connections in 4-d
1:00pm|Simonyi Hall 101

In this talk I want to discuss two related questions about the variational structure of the Yang-Mills functional in dimension four. The first is the question of 'gap' estimates; i.e., determining an energy threshold below which any solution must be...

Mar
19
2019

Computer Science/Discrete Mathematics Seminar II

A Brief Tour of Proof Complexity: Lower Bounds and Open Problems
10:30am|Simonyi Hall 101

I will give a tour of some of the key concepts and ideas in proof complexity. First, I will define all standard propositional proof systems using the sequent calculus which gives rise to a clean characterization of proofs as computationally limited...