Simon Fraser University

A skew shape is a difference of two Young diagrams where one diagram contains the other. In 2017, Jenna Rajchgot, Matthew Satriano, and Wanchun Shen showed that skew shapes can be used to study the Gerstenhaber problem, a matrix algebra problem in...

Over the past few years, operator learning – the approximation of mappings between infinite dimensional function spaces using ideas from machine learning – has attracted increased research attention. Approximate operators, learned from data, hold...

In this talk, we study the performance of some preconditioners for accelerating the convergence of Krylov subspace methods for solving linear systems of equations with a block three-by-three structure. A brief discussion is included regarding how...

TBA

There is an interesting connection between chemistry and graph theory. This connection is highlighted by the relationship between a energy of a molecule and the eigenvalues of its graph. In the 1970s, a chemist named Ivan Gutman introduced a concept...

Pattison Food Group Ltd., encompassing Save-On-Food, Nester’s Market, and over a dozen other grocery brands, stands as a leading provider of food and health products in Western Canada. In this presentation, Benny Wai, Data & Analytics Manager at PFG...

In this talk, we study the performance of some preconditioners for accelerating the convergence of Krylov subspace methods for solving linear systems of equations with a block three-by-three structure. A brief discussion is included regarding how...

Derivative-free optimization (DFO) methods are a class of optimization methods that do not use the derivatives of the objective or constraint functions. Model-based DFO methods are an important class of DFO methods that are known to struggle with...

In this talk I will discuss recent work resolving Buchi's problem, which has implications for Hilbert's Tenth Problem. In particular, we show that if there is a tuple of five integer squares (x12,x22,x32,x42,x52)(x12​,x22​,x32​,x42​,x52​)xi+22−2xi+12...

Every curve has an abelian variety associated to it, called the Jacobian. Poincaré's total reducibility theorem states that any abelian variety is isogenuous to a product of simple abelian varieties. We are interested to know this decomposition for...