Past Events

PLEASE NOTE: The room number for this session is not yet known, but it will take place at UBC's Point Grey campus. The location in the sidebar will be updated as soon as it is known. Students of grades 5 to 7 are invited to challenge and develop...

We consider a magnetized plasma (in the case of a tokamak) where the density of ions $ n_0$ as well as the imposed vertical magnetic field $B_0$ dépend on the horizontal variable $x$. The linearized system of Euler-Maxwell équations (system of 10...

One of my favorite quotations in mathematics is due to Titchmarsh, who remarked: “The finer theory of the partial sums of the Möbius function is extremely obscure, and the results are not nearly so precise as the corresponding ones in the prime...

For a standard-graded polynomial ring R, the d-Veronese subring is generated as a k-algebra by degree d monomials, is Koszul, and its defining ideal is quadratic, binomial, and determinantal. In this talk, I will discuss what happens if we instead...

A fundamental problem in artificial intelligence is how to simultaneously deploy data from different sources, such as audio, images, text, and video, collectively known as multimodal data. In this talk, I will present a mathematical framework for...

Let F be a homogeneous polynomial of degree n in at least d 2 + 1 variables over the p-adic numbers, Q p . Artin conjectured that such F always have nontrivial zeros in any p -adic field. Although this has been shown to be false in general, the...

Graph toughness, introduced by Chvátal in 1973, is a key measure of how well different parts of a graph are connected, with implications for Hamiltonicity, spanning trees, connectivity, and more. We derive new bounds on graph toughness and confirm...

Latent Dirichlet Allocation and Text embeddings have revolutionized the use of text as data leading to vastly improved document clustering and retrieval and recommender systems by finding lower dimensional structure in the text. Furthermore, these...

We give a new proof that translation-invariant free Fermion frustration-free models have zero Hall conductance. The central argument is that in frustration-free models, edge modes can’t merge into the ground state band. We also give an example of...

Cell migration plays a role in many contexts including cancer cell metastasis and wound healing. Better characterizing the process can help us slow down or speed up cells and improve related conditions. To this end, we developed two different models...