Seminars and colloquia

E.g., Feb 5, 2023

Oscar Leong


The Power and Limitations of Convexity in Data Science

February 6, 2023

Optimization is a fundamental pillar of data science. Traditionally, the art and challenge in optimization lay primarily in problem formulation to ensure desirable properties such as convexity. In the context of contemporary data science, however, optimization is practiced ... Read more
  • Mathematics of Information

Ben Williams

UBC
Classifying involutions of Azumaya algebras on schemes

February 6, 2023

MATH 126

An involution on a ring A is a self-map of order 2 that is additive and reverses the order of multiplication. I will motivate the work by explaining the classification of involutions of central simple algebras over fields. In this context, the involution acts either trivially ... Read more
  • Algebra and Algebraic geometry

Oscar Leong


Theory and Algorithms for Deep Generative Networks in Inverse Problems

February 7, 2023

In many problems arising in data science and scientific engineering, one must reconstruct a signal from few corrupted measurements, a class of problems known more broadly as inverse problems. Due to the ill-posedness of such problems, one requires a prior: a mathematical model ... Read more
  • Mathematics of Information

Curtis Bright

University of Windsor
SAT Solvers, Isomorph-free Generation, and the Quest for the Minimum Kochen–Specker System

February 7, 2023

ESB 4127

I will describe a new approach for exhaustively generating combinatorial objects by combining a satisfiability (SAT) solver with an isomorph-free exhaustive generation method such as orderly generation. The SAT solver is able to limit the search to objects that satisfy given ... Read more
  • Discrete mathematics

Emilio Corso

UBC
Harmonic analysis and equidistribution: recent instances of a long-standing connection

February 8, 2023

ESB 4127 (at PIMS)

What happens to a progressively dilating body when folding the space in which it lives? For a start, we shall examine the problem in a Euclidean context, surveying results of Randol and Strichartz through a classical Fourier-analytic approach. Afterwards, following a recent ... Read more
  • Harmonic Analysis and Fractal Geometry

Emilio Corso

UBC
Harmonic analysis and equidistribution: recent instances of a long-standing connection

February 8, 2023

ESB 4127 (at PIMS)

What happens to a progressively dilating body when folding the space in which it lives? For a start, we shall examine the problem in a Euclidean context, surveying results of Randol and Strichartz through a classical Fourier-analytic approach. Afterwards, following a recent ... Read more
  • Harmonic Analysis and Fractal Geometry

Jonathan Hermon

UBC
On the universality of fluctuations for the cover time

February 8, 2023

What is the structure of the set of the last few points visited by a random walk on a graph? We show that on vertex-transitive graphs of bounded degree, this set is decorrelated (it is close to a product measure in total variation) if and only if a simple geometric condition ... Read more
  • Probability

Sebastian Gant

UBC
Towards a stable splitting of GL_n in A1-homotopy theory

February 8, 2023

MATH 204

We give a brief overview of work of H. Miller and T. Frankel which shows that there is a filtration on the Lie group G(n) (where G(n) is one of O(n), U(n), or Sp(n)), whose strata are certain vector bundles over Grassmannians. It can be shown that this filtration splits stably ... Read more
  • Topology

Lucas Gagnon


TBA

February 14, 2023

York University

  • Discrete mathematics

Andrea Ottolini

University of Washington
Probability Seminar (TBA)

February 15, 2023

  • Probability