Events

Dimitris Koukoulopoulos, Université de Montréal

"Pretentious methods for L-functions"

I will discuss ongoing work with K. Soundararajan on proving general prime number theorems that extend classical results for L-functions. Our main theorem gives a classification of those multiplicative functions whose partial sums present significant cancellation. As a byproduct of our methods, a new proof of the classical zero-free regions for L-functions is obtained via sieve theory.

MC 5501

Laurent Bienvenu, University of Montpellier

"Randomized algorithms in computability theory - Part II"

This talk will elaborate on the Oct 30 colloquium. I will give details on several proofs, in particular how to show a $\Pi^0_1$ class is deep, applications of depth to other computability-theoretic notions, and how to use fireworks arguments with other forcing notions than Cohen-type forcing. Though attending the colloquium would give motivation and context for the topics we will discuss, the talk will be self-contained.

MC 5413

Lu Wang, University of Wisconsin-Madison

"Asymptotic structure of self-shrinkers of mean curvature flow"

We show that each end of a properly embedded self-shrinker in 3-Euclidean space of finite topology is smoothly asymptotic to a regular cone or a round cylinder.

MC 5403

Miza Rahaman, Department of Pure Mathematics, University of Waterloo

"Multiplicative Properties of Quantum Channels"

Christopher Hawthorne, Department of Pure Mathematics, University of Waterloo

"Useful classes of morphisms"

We finish up our study of rational maps with an example, after which we move on to study open embeddings. Time permitting, we will begin to cover integral maps and integral extensions.

MC 5413

Remi Jaoui, Department of Pure Mathematics, University of Waterloo

"Qualitative probability theory and types"

Following Tao's blog post "Qualitative probability theory, types and the group chunk and group configuration theorems'', we will define a qualitative version of probability theory, suitable to relate the probabilistic notion of independence with the model-theoretic one.

Justin Hilburn, University of Pennsylvania

"Springer Theory for Quantizations of Coulomb Branches"

Many interesting algebras such as U(sl_n), truncated shifted Yangians, and hypertoric enveloping algebras arise naturally as quantizations of Coulomb branches of 3d N=4 theories. I will show that these algebras act naturally on the homology of "generalized" affine Springer fibers. This is joint work with Joel Kamnitzer and Alex Weekes.

MC 5403

Hongdi Huang, Department of Pure Mathematics, University of Waterloo

Chris Hall, University of Western Ontario

"Ramanujan Covers of Graphs"

Renzhi Song, Department of Pure Mathematics, University of Waterloo

"Series parallel posets and polymorphisms"

In this two part series I will talk about the poset retraction problem on the class of series parallel posets. In this talk I will make introductions on series parallel posets and define what a polymorphism is and how their existence affects the complexity of the poset retraction problem. 

MC 5413