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Eviatar Bach

Learning probabilistic filters for data assimilation

March 13, 2026

ESB 2012 and Zoom

Filtering is a core task in many areas of science and engineering, including weather and climate prediction, where it is known as data assimilation. It involves estimating the conditional probability distribution of a dynamical system's states given partial and noisy observations – a problem... Read more

Doug Lind

University of Washington
Periodic points and counterexamples to a variant of Furstenberg's Conjecture

March 12, 2026

ESB 4127

In the classical setting of x2 and x3 acting on the circle group, the original (and unsolved) Furstenberg Conjecture is that the only continuous probability measure simultaneously invariant under both is Lebesgue measure. A stronger conjecture, attributed to Furstenberg, is that if a continuous... Read more

Xin Zhou

Cornell University
Volume Spectrum, minimal and constant mean curvature surfaces

March 12, 2026

ESB 5104

The volume spectrum is an analogue of the Laplace spectrum, defined through the area functional together with homological or cohomological relations in the space of hypercycles. In this talk, I will introduce several versions of the volume spectrum and highlight its applications in geometric... Read more

Differential geometry
Mathematical Physics
Partial Differential Equations

Matthew Dickson

UBC
(Non)-uniqueness of the infinite component for hyperbolic random connection models

March 11, 2026

ESB 2012

Random connection models form a family of random graph models. In our case the vertex set is distributed as a Poisson point process on hyperbolic d-space, and an edge exists between vertices x and y independently with a probability that depends only on the (hyperbolic) distance between them.... Read more

Probability

David Hernandez-Aristizabal

Université Côte d'Azur
Math-Bio Seminar: Basement membrane turnover drives filopodial protease-independent invasion

March 11, 2026

ESB 4133

The basement membrane (BM) is a nanoporous extracellular matrix that surrounds most tissues and blocks the passage of cells, primarily composed of covalently cross-linked collagen IV fibres and laminins. While BM breaching has traditionally been thought to be mediated by protease-mediated... Read more

Mathematical Biology

Yang Hu

U Regina
Functor calculus and vector bundle enumeration

March 10, 2026

Enumerating vector bundles of a fixed rank over a given manifold is a classical question in topology. While vector bundles are stably computable via K-theory, in the unstable range they become much harder to detect. In this talk, we will demonstrate how the orthogonal/unitary calculus of Weiss—... Read more

Topology

Yujie Xu

Columbia University
On Hecke algebras for p-adic groups and applications to the Langlands correspondence

March 9, 2026

MATH 104

I will talk about several results on Hecke algebras attached to Bernstein blocks of arbitrary reductive p-adic groups, and their applications to the local Langlands program. One such application is an explicit understanding of the (classical) arithmetic Local Langlands correspondence with... Read more

Algebra and Algebraic geometry

Peter McDonald

SFU
The Briançon-Skoda theorem for pseudo-rational and Du Bois singularities

March 2, 2026

MATH 104

The Briançon-Skoda theorem is a comparison relating the integral closure of powers of a finitely generated ideal with its ordinary powers. Originally proved using analytic methods for coordinate rings of smooth varieties over the complex numbers in 1974, it took until 1981 for Lipman and Sathaye... Read more

Algebra and Algebraic geometry

Math-Bio/IAM Colloquium: Dr. Mark Lewis

March 2, 2026

ESB 5104, LSK 306 & GEOG 200

UBC Mathematics and the Institute of Applied Mathematics will host an all-day colloquium featuring a series of talks in mathematical biology, bringing together postdoctoral fellows from mathematics and zoology.

Coffee, tea, light snacks and lunch will be... Read more

Mathematical Biology

colloquium Feb 27, 2026 free slot

February 27, 2026