Past Events
Scientific, Seminar
Lethbridge Number Theory and Combinatorics Seminar: Sreerupa Bhattacharjee
November 21, 2023
University of Lethbridge
This talk will begin with a study on explicit bounds for ψ(x) starting with the work of Rosser in 1941. It will also cover various improvements over the years including the works of Rosser and Schoenfeld, Dusart, Faber-Kadiri, Platt-Trudgian, Büthe...
Scientific, Seminar
UAlberta Math Biology Seminar: Thomas Hillen
November 20, 2023
University of Alberta
Tulips have captivated human interest for centuries, with their vibrant colors and unique shapes. Particularly striped tulips have been highly popular, leading to the “tulipomania” in the Dutch Golden Age. But how do the tulips get their stripes...
Scientific, Seminar
UBC Harmonic Analysis and Fractal Geometry: Shukun Wu
November 20, 2023
University of British Columbia
The SL_2 Kakeya problem is a special case of the three-dimensional Kakeya conjecture, and it is surprisingly connected to the restricted projection problem in geometric measure theory. In this talk, I will first discuss a proof of SL_2 Kakeya problem...
Scientific, Seminar
L-functions in Analytic Number Theory: Andrew Pearce-Crump
November 20, 2023
University of Lethbridge
In the 1960s Shanks conjectured that the $\zeta(\rho)$, where $\rho$ is a non-trivial zero of zeta, is both real and positive in the mean. Conjecturing and proving this result has a rich history, but efforts to generalise it to higher moments have so...
Scientific, Colloquia
PIMS-UWashington Mathematics Colloquium: Courtney Paquette
November 17, 2023
University of Washington
Modern machine learning (ML) applications grapple with the challenges posed by high-dimensional datasets and high-dimensional parameter spaces. Stochastic gradient descent (SGD) and its variants have emerged as the go-to algorithms for optimizing in...
Scientific, Seminar
05C50 Online Seminar: Beatrice Meini
November 17, 2023
Online
Given a connected undirected graph G = (V,E), where V is the set of vertices and E the set of edges (possibly with weights), denote by A the associated adjacency matrix. The Kemeny constant of the graph G is defined as the Kemeny constant of the...
Scientific, Seminar
SFU Number Theory and Algebraic Geometry Seminar: Daniel Bragg
November 16, 2023
Simon Fraser University
When trying to classify curves over a non-algebraically closed field, one quickly runs into the difficulty that there are curves which are not defined over their fields of moduli. We will explain what this means with some examples. We will discuss...
Scientific, Seminar
PIMS Network Wide Colloquium: Kristin Lauter
November 16, 2023
Online
Learning with Errors (LWE) is a hard math problem with algebraic structure, underpinning many proposed Post-Quantum Cryptosystems (PQC). The only PQC key exchange standardized by NIST is based on module LWE, and current publicly available PQC...
Scientific, Seminar
UBC Number Theory Seminar: Seoyoung Kim
November 16, 2023
University of British Columbia
In 1965, Birch and Swinnerton-Dyer formulated a conjecture on the Mordell-Weil rank r of elliptic curves which also implies the convergence of the Nagao-Mestre sum. We show that if the Nagao-Mestre sum converges, then the limit equals −r+1/2, and...
Scientific, Seminar
PIMS-CORDS SFU Operations Research Seminar: Feyza Sahinyazan
November 16, 2023
Simon Fraser University
Remote communities around the globe rely on off-grid installations of stand-alone diesel generators to cover their energy needs, which can be costly, harmful to the environment and subject to disruptions. Policymakers seek sustainable solutions for...