# Eventss

# Colloquium Dvoretzky lecture: Assaf Naor(Princeton) - An average John theorem

## Location:

__Abstract__: We will prove a sharp average-case variant of a classical embedding theorem of John through the theory of nonlinear spectral gaps. We will use this theorem to provide a new answer to questions of Johnson and Lindenstrauss (1983) and Bourgain (1985) on metric dimension reduction, and explain how it leads to algorithms for approximate nearest neighbor search.

# Colloquium: Spencer Unger (HUJI) - A constructive solution to Tarski's circle squaring problem

## Location:

# Colloquium: Ohad Feldheim - Lattice models of magnetism: from magnets to antiferromagnets

## Location:

# Colloquium: Alon Nishry (TAU) - Zeros of random power series

## Location:

# Erdos Lectures: Igor Pak (UCLA) - Counting integer points in polytopes

## Lecturer:

## Location:

# Colloquium: Alexei Entin (TAU) - Sectional monodromy and the distribution of irreducible polynomials

## Location:

# Landau Lecture 1: From Betti cohomology to crystalline cohomology (colloquium)

## Lecturer:

## Location:

### From Betti cohomology to crystalline cohomology

Read more about Landau Lecture 1: From Betti cohomology to crystalline cohomology (colloquium)

# Colloquium: Alexander Yom Din (Caltech) - From analysis to algebra to geometry - an example in representation theory of real groups

## Location:

# Feldenkrais and Mathematics

## Location:

# The 22nd Midrasha Mathematicae : Equidistribution, Invariant Measures and Applications

## Location:

##
**A tribute to the Legacy of Marina Ratner**

For more information and registration click here. Read more about The 22nd Midrasha Mathematicae : Equidistribution, Invariant Measures and Applications

# Zabrodsky Lectures: Prof. Rahul Pandharipande (ETH Zurich)

# Zabrodsky Lecture 3: CohFT calculations

## Lecturer:

## Location:

I will explain how calculations of various natural classes on the moduli of curves fit into the CohFT framework. These include calculations related to Hilbert schemes of points, Verlinde bundles, and, if time permits, double ramification (DR) cycles. Read more about Zabrodsky Lecture 3: CohFT calculations

# Zabrodsky Lecture 2: Cohomological Field Theories

## Lecturer:

## Location:

# Zabrodsky Lecture 1: Geometry of the moduli space of curves

## Lecturer:

## Location:

The moduli space of curves, first appearing in the work of Riemann in the 19th century, plays an important role in geometry. After an introduction to the moduli space, I will discuss recent directions in the study of tautological classes on the moduli space following ideas and conjectures of Mumford, Faber-Zagier, and Pixton. Cohomological Field Theories (CohFTs) play an important role. The talk is about the search for a cohomology calculus for the moduli space of curves parallel to what is known for better understood geometries. My goal is to give a presentation of the progress in the past decade and the current state of the field.