Department Colloquium

Organizers: Rafe Mazzeo & Ravi Vakil

Upcoming Events

Department Colloquium
Thursday, April 4, 2024
4:00 PM
Gavril Farkas (Humboldt-Universität zu Berlin)
Department Colloquium
Thursday, May 23, 2024
4:30 PM
|
380Y
Hannah Larson (UC Berkeley)

Abstract

Past Events

Department Colloquium
Friday, January 19, 2024
3:00 PM
|
380W
Cole Graham (Brown)

The world teems with examples of invasion, in which one steady state spatially invades another. Invasion can even display a universal character: fine details recur in seemingly unrelated systems. Reaction-diffusion equations provide a mathematical framework for these phenomena. In this talk…

Department Colloquium
Thursday, January 11, 2024
4:30 PM
|
380Y
Svitlana Mayboroda (ETH Zurich and University of Minnesota)

Abstract: 

Harmonic measure is the probability that a Brownian traveler starting from the center of the domain exists through a particular portion of the boundary. It is a fundamental concept at the intersection of PDEs, probability, harmonic analysis, and geometric measure theory,…

Department Colloquium
Wednesday, January 10, 2024
4:00 PM
|
380W
Hyunju Kwon (ETH)

In the study of fluid dynamics, turbulence poses a significant challenge in predicting fluid behavior, and it remains a mystery for mathematicians and physicists alike. Recently, there has been some exciting progress in our understanding of ideal turbulence: starting from Onsager’s theorem…

Department Colloquium
Thursday, November 30, 2023
4:30 PM
|
380Y
Lingfu Zhang (Berkeley)

A striking phenomenon in probability theory is universality, where different probabilistic models produce the same large-scale or long-time limit. One example is the Kardar-Parisi-Zhang (KPZ) universality class, which contains a wide range of natural models, including growth processes modeling…

Department Colloquium
Thursday, October 5, 2023
4:30 PM
|
380-Y
Michael Temkin (HUJI)

"...in this field, almost everything is already discovered, and all that remains is to fill a few unimportant holes."  - Philipp von Jolly in his recommendation to Max Planck not to go into physics.

Since 2015 I am taking part in a long project (more precisely, a series of projects)…

Department Colloquium
Thursday, June 1, 2023
4:30 PM
|
380Y
Francis Brown (Oxford)

This talk will be a guided tour of some very distinct, but highly interconnected areas of combinatorics, algebraic geometry and number theory. 

Graph complexes were introduced by Kontsevich and encode the contraction of edges in a graph. Despite the elementary definition, their…

Department Colloquium
Thursday, May 25, 2023
4:30 PM
|
380Y
Tomer Schlank (Einstein Institute, Hebrew Univ. Jerusalem)

 In the world of homotopy theory, there are analogs of abelian groups called Spectra. Spectra are extremely useful in algebraic topology, differential topology, algebraic K-theory, and more. According to the primary decomposition theorem,  Abelian groups decompose into parts according…

Department Colloquium
Thursday, May 25, 2023
2:30 PM
|
383N
Michael Freedman (Microsoft)

 In 1952 R.H. Bing published wild involution (it is an orientation-reversing homeomorphism which squares to the identity) of the three sphere, S^3. This example started a revolution in decomposition space theory which led to the solutions of the double-suspension problem (Edwards and Cannon…

Department Colloquium
Thursday, May 18, 2023
4:30 PM
|
380Y
Ron Peled (Tel Aviv University, IAS and Princeton)

Let T be a subset of R^d, such as a ball, a cube or a cylinder, and consider all possibilities for packing translates of T, perhaps with its rotations, in some bounded domain in R^d. What does a typical packing of this sort look like? One mathematical formalization of this question is to fix the…

Department Colloquium
Monday, March 20, 2023
4:30 PM
|
384H
Chris Eur (Harvard)