Upcoming Seminars & Events

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April 21, 2014
3:15pm - 4:15pm
Recent progress on the Landis conjecture
Analysis Seminar

PLEASE CLICK ON SEMINAR TITLE FOR COMPLETE ABSTRACT. In the late 60's, E.M. Landis conjectured that if $\Delta u+Vu=0$ in $\mathbb{R}^n$ with $\|V\|_{L^{\infty}(\mathbb{R}^n)}\le 1$ and $\|u\|_{L^{\infty}(\mathbb{R}^n)}\le C_0$ satisfying $|u(x)|\le C\exp(-C|x|^{1+})$, then $u\equiv 0$.

Speaker: Jeen-Nan Wang , National Taiwan University
Location:
Fine Hall 314
April 21, 2014
3:30pm - 4:30pm
A transition formula for mean values of Dirichlet polynomials
Princeton University/IAS Number Theory Seminar

Please note special day (Monday) and location.

Speaker: Tom Zhang , IAS and University of New Hampshire
Location:
IAS Room S-101
April 21, 2014
4:30pm - 5:30pm
Curvature suppresses the Rayleigh-Taylor instability
PACM/Applied Mathematics Colloquium

PLEASE CLICK ON COLLOQUIUM TITLE FOR EACH COMPLETE ABSTRACT. Naima Hammoud's abstract: Thin films on curved surfaces are widely observed in coating and painting processes and wetting problems.
Haoshu Tian's abstract: The default of one bank can cause other banks to default through two channels: financial contagion in the inter-bank liability network and fire sale in the asset selling market. When the defaulted bank cannot fully pay its debt, the loss is transmitted to other banks.

Speaker: Naima Hammoud & Haoshu Tian - PACM Graduate Students, Princeton University
Location:
Fine Hall 214
April 22, 2014
4:30pm - 5:30pm
Birational geometry of moduli of stable rational curves
Algebraic Geometry Seminar

I will report on joint work with Castravet on birational geometry of moduli of stable rational curves with n punctures. In particular, we show that it is not a Mori Dream Space when n is at least 134, answering a question of Hu and Keel.

Speaker: Jenia Tevelev , University of Massachusetts
Location:
Fine Hall 322
April 23, 2014
4:30pm - 6:00pm
Modular forms for noncongruence subgroups: an overview
Department Colloquium

The two most important tools used to study the arithmetic of modular forms for congruence subgroups are the Hecke theory and l-adic Galois representations. Unlike their congruence counterpart, the arithmetic for noncongruence modular forms remains mysterious. A main reason is the lack of efficient Hecke operators.

Speaker: Winnie Li , Penn State University
Location:
Fine Hall 314
April 24, 2014
2:00pm - 3:30pm
TBA - Dong Li
Ergodic Theory & Statistical Mechanics
Speaker: Dong Li , University of British Columbia
Location:
Fine Hall 601
April 24, 2014
3:00pm - 4:00pm
TBA - Bendersky
Algebraic Topology Seminar
Speaker: Martin Bendersky, City University of New York (CUNY)
Location:
Fine Hall 214
April 24, 2014
4:30pm - 6:00pm
TBA - Filmus
Discrete Mathematics Seminar
Speaker: Yuval Filmus , IAS
Location:
Fine Hall 224
April 24, 2014
4:30pm - 5:30pm
On active scalar equations with nonlocal velocity.
Analysis of Fluids and Related Topics

The problem of finite-time singularity versus global regularity for active scalar equations with nonlocal velocities has attracted much attention in recent years. In this talk, I will discuss some recent results in this direction.

Speaker: Hongjie Dong , Brown University
Location:
Fine Hall 322
April 24, 2014
4:30pm - 5:30pm
TBA - Boxer
Princeton University/IAS Number Theory Seminar
Speaker: George Boxer , Harvard University
Location:
IAS Room S-101
April 24, 2014
4:30pm - 5:30pm
TBA - Culler
Topology Seminar
Speaker: Lucas Culler, MIT
Location:
Fine Hall 314
April 25, 2014
3:00pm - 4:00pm
Structure of measures in Lipschitz differentiability spaces
Differential Geometry & Geometric Analysis Seminar

This talk will present results showing the equivalence of two very different ways of generalising Rademacher's theorem to metric measure spaces. The first was introduced by Cheeger and is based upon

Speaker: David Bate , University of Chicago
Location:
Fine Hall 314
April 28, 2014
2:00pm - 3:00pm
TBA - Kovács
Algebraic Geometry Seminar

Please note special day, time and location.

Speaker: Sándor Kovács , University of Washington
Location:
Fine Hall 401
April 28, 2014
3:15pm - 4:15pm
TBA - Lie
Analysis Seminar
Speaker: Victor Lie , Purdue University
Location:
Fine Hall 314
April 28, 2014
4:30pm - 5:30pm
Coarsening to Chaos-Stabilized Fronts in Pattern Formation with Galilean Invariance
PACM/Applied Mathematics Colloquium

The presence of continuous symmetries, or coupling with a large-scale mode or mean flow, can strongly influence the dynamics of pattern-forming systems.  After reviewing some aspects of pattern formation and spatiotemporal chaos in one-dimensional Kuramoto-Sivashinsky-type equations, I will focus on a 6th-order analogue, the Nikolaevskiy PDE, a model for short-wave pattern formation with Galile

Speaker: Ralf Wittenberg , Simon Fraser University
Location:
Fine Hall 214
April 30, 2014
2:30pm - 3:30pm
Special Probability Seminar: Cover times, blanket times, and the Gaussian free field
Special Event

PLEASE CLICK ON SEMINAR TITLE FOR COMPLETE ABSTRACT. The cover time of a finite graph G (the expected time for simple random walk to visit all vertices) has been extensively studied, yet a number of fundamental questions concerning cover times have remained open: Aldous and Fill (1994) asked whether there is a deterministic polynomial-time algorithm that computes the cover time up to an O(1) factor

Speaker: Yuval Peres , Microsoft Research
Location:
Fine Hall 314
April 30, 2014
3:00pm - 4:00pm
Talk #1: TBA - Lin
Joint Princeton Rutgers Geometric PDEs Seminar
Speaker: Fanghua Lin , NYU
Location:
Fine Hall 214
April 30, 2014
4:15pm - 5:15pm
Talk #2: TBA - Kleiner
Joint Princeton Rutgers Geometric PDEs Seminar
Speaker: Bruce Kleiner , NYU
Location:
Fine Hall 214
April 30, 2014
4:30pm - 5:30pm
Solving Boltzmann Equation, Green's Function Approach.
Department Colloquium

PLEASE CLICK ON SEMINAR TITLE FOR COMPLETE ABSTRACT. We will describe an quantitative approach for solving the Boltzmann equation in the kinetic theory. The approach has been developed, with Shih-Hsien Yu, in the past decade and proven effective in understanding some of the important physical phenomena.

Speaker: Taiping Liu, Stanford University
Location:
Fine Hall 314
May 1, 2014
2:00pm - 3:30pm
TBA - Pastur
Ergodic Theory & Statistical Mechanics
Speaker: Leonid Pastur , National Academy of Sciences, Ukraine
Location:
Fine Hall 601