Past Events
Scientific, Seminar
UBC Diff. Geom. Seminar: Xi Sisi Shen
November 18, 2020
Online
We discuss the existence problem of constant Chern scalar curvature metrics on a compact complex manifold. We prove a priori estimates for these metrics conditional on an upper bound on the entropy, extending a recent result by Chen-Cheng in the K\...
Scientific, Seminar
UBC Topology Seminar: Robert DeYeso
November 18, 2020
Online
In low-dimensional topology we are often interested in determining 3-manifolds that arise as surgery along a knot, and investigating the surfaces they contain. In this talk, we study gluings X of the twisted I-bundle over the Klein bottle to knot...
Scientific, Seminar
UBC Discrete Math Seminar: Abdul Basit
November 17, 2020
Online
Zarankiewicz's problem in extremal graph theory asks for the maximum number of edges in a bipartite graph on $n$ vertices which does not contain a copy of $K_{k,k}$, the complete bipartite with $k$ vertices in both classes. We will consider this...
Scientific, Seminar
Ergodic Theory Lectures: Todd Fisher
November 17, 2020
Online
Accessibility is a fundamental tool when working with partially hyperbolic systems. For instance, in the 1970s it was used as a tool to show certain systems were transitive, and in the 1990s it was used to establish stable ergodicity. We will review...
Scientific, Seminar
UBC Probability Seminar: Marek Biskup
November 12, 2020
Online
TBA
Scientific, Seminar
UBC Discrete Math Seminar: Kyle Yip
November 11, 2020
Online
In this talk, we will discuss how to improve the trivial upper bound on the clique number of Paley graphs and generalized Paley graphs using a different method. I will revisit the direction set determined by a Cartesian product in an affine Galois...
Scientific, Seminar
Ergodic Theory Lectures: Alistair Windsor
November 9, 2020
Online
Going back to the foundation work of von Neuman there is a question of whether there are smooth models of the models of classical ergodic theory. When both measure and map are required to be smooth there is only one known obstruction but essentially...
Scientific, Seminar
PIMS-UVic Distinguished Lecture: Karen Gunderson
November 6, 2020
None
For any \(r\geq 2\), an \(r\)-uniform hypergraph \(\mathcal{H}\), and integer \(n\), the Turán number for \(\mathcal{H}\) is the maximum number of hyperedges in any \(r\)-uniform hypergraph on \(n\) vertices containing no copy of \(\mathcal{H}\)...
Scientific, Seminar
PIMS-UVic Discrete Math Seminar: Karen Gunderson
November 6, 2020
Online
For any $r\geq 2$, an $r$-uniform hypergraph $\mathcal{H}$, and integer $n$, the \emph{Tur\'{a}n number} for $\mathcal{H}$ is the maximum number of hyperedges in any $r$-uniform hypergraph on $n$ vertices containing no copy of $\mathcal{H}$. While...
Scientific, Seminar
PIMS-UNBC Distinguished Colloquium Talk: Steven J. Miller
November 4, 2020
Online
Many systems exhibit a digit bias. For example, the first digit base 10 of the Fibonacci numbers or of 2^n equals 1 about 30% of the time; the IRS uses this digit bias to detect fraudulent corporate tax returns. This phenomenon, known as Benford's...