Past Events

E.g., Apr 25, 2024

Shubhodip Mondal

UBC
Dieudonne theory and cohomology of classifying stack

March 25, 2024

MATH 126

In this talk, I will first describe how the classical Dieudonne module of finite flat group schemes and p-divisible groups can be recovered from crystalline cohomology of classifying stacks. Then I will explain how to classify finite flat group schemes over a fairly general base by using... Read more

  • Algebra and Algebraic geometry

Peter Kosenko

UBC
Classifying stationary measures on $S^1$ with respect to $PSU(1,1)$ through the complex-analytic point of view

March 25, 2024

ESB 4127

Given an arbitrary probability measure $\mu$ on $PSU(1,1)$, understanding the structure of $\mu$-stationary measures is a notoriously difficult problem, in particular, due to the number of different settings one can work in. The answer is known to depend on the moment conditions of $\mu$,... Read more

Shohini Ghose

Wilfrid Laurier University
Her Space, Her Time: How Trailblazing Women Scientists Decoded the Hidden Universe

March 22, 2024

ESB 1012 (PIMS building)

This event is part of the International Women’s Day (IWD), but is suitable and welcoming for everyone, especially undergraduates!

Dr. Shohini Ghose is a Professor of Physics & Computer Science at Wilfrid Laurier University in Waterloo, the author of two books (the latest is titled... Read more

Kyle Ormsby

University of Washington
Transfer systems and the combinatorics of model structures

March 22, 2024

ESB 4133 (PIMS lounge)

Model structures underpin the modern enterprise of abstract homotopy theory and form presentations of (\infty,1)‑categories. Despite their fundamental nature, model structures have historically been studied en masse or applied in specific cases, and very little is known about the totality of... Read more

  • Topology

Emanuele Bodon

UBC
Pro-p Iwahori Invariants

March 21, 2024

ESB 4133

Let $F$ be the field of $p$-adic numbers (or, more generally, a non-archimedean local field) and let $G$ be $\mathrm{GL}_n(F)$ (or, more generally, the group of $F$-points of a split connected reductive group). In the framework of the local Langlands program, one is interested in studying... Read more

  • Number Theory

Cristiano Spotti

Aarhus University
Special non-Kähler metrics on resolutions

March 21, 2024

Zoom talk

Given a mildly singular complex varieties admitting certain special singular hermitian metrics, e.g., Calabi-Yau metrics, it is a natural problem to study the existence of similar metrics on resolutions of such spaces which should degenerate back to the singular metric. However, it is often the... Read more

  • Differential geometry
  • Mathematical Physics
  • Partial Differential Equations

Donald Stanley

U Regina
Which graded algebras are realizable as the cohomology of a space?

March 20, 2024

ESB 4133

The realizability question is an old question in algebraic topology. The Hopf invariant 1 problem, solved by Adams in the early 1960s is a special case. Later in the 60s by developing rational homotopy theory Quillen was able to show that all graded algebras over the rationals are realizable.... Read more

  • Topology

Belinda Akpa

U Tennessee
Every Model has its Place: Combining Systems, Data-driven, and Generative Models for Therapeutic Design

March 20, 2024

ESB 4133

Drug discovery is a molecular search task with a challenging objective: modify the function of a complex biological system to interrupt disease processes. Conventionally, it is a costly, high failure-rate process – with molecular candidates clearing preclinical safety and efficacy hurdles only... Read more

  • Mathematical Biology

Inhyeok Choi

Korea Institute for Advanced Study
Random walks, superlinear divergence and quasi-isometry

March 20, 2024

Since Bellman, Furstenberg and Kesten’s pioneering works, random walks on groups have been investigated from the viewpoint of dynamics, ergodic theory and geometric group theory. A long-sought goal in this direction is to relate a group’s QI-invariant property with the limiting behaviour of... Read more

  • Probability

Junjie Zhu

University of British Columbia
UBC-HAFG Seminar: Cones are not Salem

March 18, 2024

ESB 4133 (PIMS Library)

The notions of Hausdorff and Fourier dimensions are ubiquitous in harmonic analysis and geometric measure theory. It is known that any hypersurface in $\mathbb{R}^{d+1}$ has Hausdorff dimension $d$. However, the Fourier dimension depends on the finer geometric properties of the hypersurface. For... Read more

  • Harmonic Analysis and Fractal Geometry