Seminars Sorted by Series

Members’ Seminar

Mar
08
2021

Members’ Seminar

Higher Representation Theory
2:00pm|Simonyi Hall 101 and Remote Access

New types of symmetries have been considered in algebra and algebraic geometry and a higher analog of representation theory has been developed to answer questions of classical representation theory. Geometric representation theory can be viewed as...

Mar
15
2021

Members’ Seminar

Estimating the mean of a real valued distribution
2:00pm|Simonyi Hall 101 and Remote Access

I revisit the basic statistical problem of estimating the mean of a real-valued distribution. I will introduce an estimator with the guarantee that "our estimator, on *any* distribution, is as accurate as the sample mean is for the Gaussian...

Milnor Conjecture Learning Seminar

Minerva Distinguished Visitor Lectures at Princeton University

Nov
09
2015

Minerva Distinguished Visitor Lectures at Princeton University

I: Geometry and dynamics on hyperbolic surfaces
4:30pm|McDonnell A02, Princeton University

The first lecture will give some background on the geometry and dynamics on hyperbolic surfaces. I will give a brief overview of Teichmüller theory and properties of the mapping class groups and the space of geodesic currents. I will discuss some...

Nov
11
2015

Minerva Distinguished Visitor Lectures at Princeton University

II: Dynamics on moduli spaces of hyperbolic surfaces
4:30pm|McDonnell A02, Princeton University

In the second lecture, I will discuss several natural geometric flows defined on bundles over the moduli spaces of curves. I will describe basic ergodic properties of these flows. I will discuss some open questions and some of the progress made in...

Nov
13
2015

Minerva Distinguished Visitor Lectures at Princeton University

III: Counting mapping class group orbits on hyperbolic surfaces
4:30pm|McDonnell A02, Princeton University

Let $X$ be a complete hyperbolic metric on a surface of genus $g$ with $n$ punctures. In this lecture I will discuss the problem of the growth of $s^{k}_{X}(L)$, the number of closed curves of length at most $L$ on $X$ with at most $k$ self...

Minerva Mini-Course

Oct
23
2015

Minerva Mini-Course

An overview of Benjamini-Schramm convergence in group theory and dynamics
Lewis Bowen
1:30pm|Fine 110, Princeton University

Finite models of infinite groups/actions/manifolds are useful for studying spectral and $L^2$-invariants, constructing random processes and have recently been used to introduce new invariants of group actions useful for proving nonembedding and...

Oct
30
2015

Minerva Mini-Course

$L^2$ invariants and Benjamini-Schramm convergence
Lewis Bowen
1:30pm|Fine 110, Princeton University

Finite models of infinite groups/actions/manifolds are useful for studying spectral and $L^2$-invariants, constructing random processes and have recently been used to introduce new invariants of group actions useful for proving nonembedding and...

Nov
20
2015

Minerva Mini-Course

When does injectivity imply surjectivity?
Lewis Bowen
1:30pm|Fine 110, Princeton University

Finite models of infinite groups/actions/manifolds are useful for studying spectral and $L^2$-invariants, constructing random processes and have recently been used to introduce new invariants of group actions useful for proving nonembedding and...

Nov
23
2015

Minerva Mini-Course

Classification of Bernoulli shifts
Lewis Bowen
4:30pm|Fine 314, Princeton University

Finite models of infinite groups/actions/manifolds are useful for studying spectral and $L^2$-invariants, constructing random processes and have recently been used to introduce new invariants of group actions useful for proving nonembedding and...

Dec
04
2015

Minerva Mini-Course

Ergodic theorems beyond amenable groups
Lewis Bowen
1:30pm|Fine 110, Princeton University

Let $G$ be a locally compact group acting by measure-preserving transformations on a probability space $(X,\mu)$. To every probability measure on $G$ there is an associated averaging operator on $L^p(X,\mu)$. Ergodic theorems describe the pointwise...

Mini conference on Arithmetic Combinatorics

Mini-Course

Oct
10
2007

Mini-Course

Sum-Products Estimates and Applications
2:00pm|S-101

It is an introduction to the topic. We would present a proof of the quantitative sum-product in F^p and the proof of the exponential sum bound + an overview of what's around.

Oct
11
2007

Mini-Course

Inverse Theorems and Random Matrices
2:00pm|S-101

It is an introduction to the topic. We would present several inverse theorems in additive number theory (starting with Freiman's) and some overview about their applications. Next, we discuss the connection between some of these and problems...

Oct
17
2007

Mini-Course

Sum-Products Estimates and Applications
2:00pm|S-101

It is an introduction to the topic. We would present a proof of the quantitative sum-product in F^p and the proof of the exponential sum bound + an overview of what's around.

Oct
18
2007

Mini-Course

Inverse Theorems and Random Matrices
2:00pm|S-101

It is an introduction to the topic. We would present several inverse theorems in additive number theory (starting with Freiman's) and some overview about their applications. Next, we discuss the connection between some of these and problems...

Oct
24
2007

Mini-Course

Nilsequences in Additive Combinatorics
2:00pm|S-101

There has been quite a lot of recent work in additive combinatorics seeking to develop our understanding of the 'higher Fourier analysis' suggested by the work of Gowers on Szemeredi's theorem and the work of various ergodic theorists (Host, Kra...

Oct
31
2007

Mini-Course

Nilsequences in Additive Combinatorics (continuation)
2:00pm|S-101

There has been quite a lot of recent work in additive combinatorics seeking to develop our understanding of the 'higher Fourier analysis' suggested by the work of Gowers on Szemeredi's theorem and the work of various ergodic theorists (Host, Kra...

Mini-Course in Geometric PDE

Oct
07
2008

Mini-Course in Geometric PDE

Fully Nonlinear Equations in Conformal Geometry
Matt Gursky
1:30pm|S-101

The goal of this course to provide an introduction to Monge-Ampere-type equations in conformal geometry and their applications. The plan of the course is the following: After providing some background material in conformal geometry, I will describe...