Past Events

E.g., Sep 20, 2025


Sep19 colloquium: reserved for MDU

September 19, 2025

TBA Read more

Josh Frisch

Univerity of California San Diego
Randomized Stopping Times, Bounded Harmonic Functions on Groups, and Topological Realizations

September 17, 2025

ESB 2012

Bounded harmonic functions on groups (and their alter ego, the Poisson boundary)—bounded functions such that f(x) is the average of f(xa), where a is chosen from some probability measure—are objects of key importance in random walks, dynamics, and probability. Two core techniques for... Read more

  • Probability

Dr. Alex Beams

SFU
Math-Bio: Branching out from compartmental models to analyze genomic data: using phylogenies to learn about pathogen populations

September 17, 2025

ESB 4133

Phylogenetic trees are mathematical objects that encode information about ancestry relationships and are often used in the interpretation of genomic data. They have proved especially useful for advancing our understanding of pathogen populations that evolve on observable timescales, and the... Read more

  • Mathematical Biology

Dr. Alex Beams

SFU
Math-Bio: Branching out from compartmental models to analyze genomic data: using phylogenies to learn about pathogen populations

September 17, 2025

ESB 4133

Phylogenetic trees are mathematical objects that encode information about ancestry relationships and are often used in the interpretation of genomic data. They have proved especially useful for advancing our understanding of pathogen populations that evolve on observable timescales, and the... Read more

  • Mathematical Biology

Alexandre Girouard

Université Laval
The Steklov spectrum of warped products

September 16, 2025

ESB 4127

We obtain upper bounds for the Steklov eigenvalues of warped products $\Omega\times_h\Sigma$, where $\Omega$ is a compact Riemannian manifold with boundary and $\Sigma$ is a closed Riemannian manifold, under assumptions on the $L^p$-norm of the warping function $h$. The upper bounds that we... Read more

  • Differential geometry
  • Mathematical Physics
  • Partial Differential Equations

Jim Bryan

UBC
Algebraic loop spaces, quivers, and topology

September 15, 2025

MATH 126

We define the algebraic double loop space, and algebro-geometric analogue of the double loop space in topology. We discuss quiver descriptions of the algebraic loop space of various homogeneous spaces. We show how this leads to various new results both in topology and algebraic geometry. Read more

  • Algebra and Algebraic geometry


Sep12 colloquium: reserved for MDU

September 12, 2025

TBA Read more

Markus Heydenreich

Universitat Augsburg
Infinite and bi-infinite incipient clusters in high dimension

September 10, 2025

ESB 2012

The incipient infinite cluster is a critical percolation cluster that is conditioned on being infinitely large. Even though the condition has probability zero, Kesten demonstrated the first such construction for critical two-dimensional percolation in 1986 through a suitable limiting scheme.... Read more

  • Probability

Emeritus Prof. Cindy Greenwood

UBC
Math-Bio: The Rainbow and the Brain

September 10, 2025

ESB 4133

The rainbow and the brain have in common that frequencies are produced. In both cases there is a function of frequency, f, called the power spectral density (PSD). In both cases invasive investigation spoils the investigated object. This talk will describe using noninvasive... Read more

  • Mathematical Biology

Emeritus Prof. Cindy Greenwood

UBC
Math-Bio: The Rainbow and the Brain

September 10, 2025

ESB 4133

The rainbow and the brain have in common that frequencies are produced. In both cases there is a function of frequency, f, called the power spectral density (PSD). In both cases invasive investigation spoils the investigated object. This talk will describe using noninvasive... Read more

  • Mathematical Biology