Past Events

Finitely generated groups can be treated as geometric objects by considering their Cayley graphs with respect to finite generating sets. All such graphs are quasi-isometrically equivalent. In the 80s, Gromov proposed studying finitely generated...

In 1671, Bachet conjectured that every natural number can be written as sum of four squares. A century of efforts and ideas was needed for Lagrange to reach a proof, and almost another century for Jacobi to quantify precisely this result. Today...

It is well-known that for any finite group G, there exists a closed 3-manifold M with G as a quotient of the fundamental group of M. However, we can ask more detailed questions about the possible finite quotients of 3-manifold groups, e.g. for G and...

Finitely generated groups can be treated as geometric objects by considering their Cayley graphs with respect to finite generating sets. All such graphs are quasi-isometrically equivalent. In the 80s, Gromov proposed studying finitely generated...

Infectious diseases such as tuberculosis, African swine fever virus (ASFV), and highly pathogenic influenza viruses continue to affect millions of people and animals worldwide. Developing vaccines or antiviral drugs against these pathogens...

Robert McCann of the University of Toronto has been awarded the 2026 CRM-Fields-PIMS Prize and will deliver the prize lecture on March 20 at 12:30 PM PT / 3:30 PM ET. In the words of the selection committee, Professor McCann “was awarded the CRM...

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...

Lie group integrators are a class of numerical schemes for the solution of ordinary differential equations on manifolds. These methods avoid explicit representation of the solution in a coordinate chart by advancing the solution using a continuous...

Thursday, March 12 9:30 am: Start 9:30 am - 10:30 am: Nassif Ghoussoub (University of British Columbia) Title: Skew-linear entropies, Kantorovich operators and their ergodic theory Abstract: Kantorovich operators are non-linear extensions of Markov...

Marginal Expected Shortfall (MES) has become a central measure for assessing systemic risk. In this talk, I trace MES back to its theoretical roots in weighted risk-capital allocation rules and show that, perhaps counterintuitively, MES can be...