Previous Conferences & Workshops

Mar
20
2023

Computer Science/Discrete Mathematics Seminar I

Strong Bounds for 3-Progressions
Raghu Meka and Zander Kelley
10:00am|Simonyi 101 and Remote Access

Suppose you have a set S of integers from {1 , 2 , … , N} that contains at least N / C elements. Then for large enough N , must S contain three equally spaced numbers (i.e., a 3-term arithmetic progression)?

In 1953, Roth showed that this is indeed...

Mar
17
2023

Probability Seminar

The Fyodorov-Hiary-Keating conjecture
11:15am|Simonyi 101 and Remote Access

Through the random matrix analogy, Fyodorov, Hiary and Keating conjectured very precisely the typical values of the Riemann zeta function in short intervals of the critical line, in particular their maximum. Their prediction relied on techniques...

Mar
17
2023

Probability Seminar

Bisectors in random plane geometry
Bálint Virág
10:15am|Simonyi 101 and Remote Access

In Euclidean geometry, bisectors are perpendicular lines. In random plane geometry, the situation is more complicated. I will describe bisectors in the directed landscape, the universal geometry in the KPZ class. These help answer some open...

Mar
17
2023

Joint IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Heaviness and Relative Symplectic Cohomology
Yuhan Sun
9:15am|Remote Access

For a compact subset $K$ of a closed symplectic manifold, Entov-Polterovich introduced the notion of (super)heaviness, which reveals surprising symplectic rigidity. When $K$ is a Lagrangian submanifold, there is a well-established criterion for its...

Mar
16
2023

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Canonical Metrics in Kähler Geometry
Xi Sisi Shen
1:00pm|Simonyi Hall

In this talk, we will discuss the existence problem of extremal metrics on a Kähler manifold. The best known examples of these are Kähler-Einstein and constant scalar curvature Kähler (cscK) metrics. Yau's resolution of the Calabi conjecture proves...

Mar
14
2023

Special Year Research Seminar

Geometric Representation of Structured Extensions in Ergodic Theory
Henrik Kreidler
2:00pm|Simonyi 101 and Remote Access

The Mackey-Zimmer representation theorem is a key structural result from ergodic theory: Every compact extension between ergodic measure-preserving systems can be written as a skew-product by a homogeneous space of a compact group. This is used, e.g...

Mar
13
2023

IAS/Princeton Arithmetic Geometry Seminar

The Riemann-Hilbert Correspondence in Nonarchimedean Geometry
4:30pm|Simonyi Hall 101 and Remote Access

Let X be a smooth projective variety over the field of complex numbers. The classical Riemann-Hilbert correspondence supplies a fully faithful embedding from the category of perverse sheaves on X to the category of algebraic D_X-modules. In this...

Mar
13
2023

Joint IAS/Princeton University Symplectic Geometry Seminar

Mean Action and the Calabi Invariant
Abror Pirnapasov
4:00pm|Fine 314 and Remote Access

Hutchings used Embedded Contact Homology to show the following for area-preserving disc diffeomorphisms that are a rotation near the boundary of the disc: if the asymptotic mean action on the boundary is greater than the Calabi invariant, then the...