Past Events

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...

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...

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...

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)...

Foraging behavior is highly flexible, with individuals adjusting feeding strategies in response to food availability, predation risk, and physiological state. This study develops mechanistic frameworks to explore how such behavioral flexibility...

The prime number theorem proven independently by de la Vallée Poussin and Hadamard (1896) is an asymptotic statement about prime counting functions. It holds for sufficiently large numbers x. In 1941 Rosser authored an article giving explicit...

Building on last week's talk, I discuss Locally Cartesian Closed Categories (LCCCs) , in which every slice category is Cartesian Closed. I describe how these categories serve model quantifiers in logic, as well as modelling type dependencies in a way...

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...

The Inverse Eigenvalue Problem for Graphs (IEP-G) concerns determining all possible spectra of matrices in S(G), the set of real symmetric matrices described by a graph. Specific subproblems involve studying the maximum nullity or minimum rank, the...

Back in 1848, in a German chess magazine, Max Bezzel asked how many ways there are to place 8 queens on a chessboard so that no two queens can attack one another. This question caught the attention of many, including Gauss, and was subsequently...