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Wednesday, August 23, 2023 3:00 pm - 3:00 pm EDT (GMT -04:00)

Model Theory Working Seminar

Moshe Kamensky, Ben-Gurion University

"Higher internal covers"

In model theory, internality is a relationship between definable sets that entails the existence of a definable Galois group, with definable Galois correspondence. It can be formulated as an equivalence between certain expansion of a theory T (internal covers) and groupoids definable in that theory. I will describe a partial generalisation of this correspondence to higher dimensions.

MC 5479

Tuesday, August 29, 2023 1:00 pm - 1:00 pm EDT (GMT -04:00)

Differential Geometry Working Seminar

Talk #1 (1:00-2:30pm)

Ruxandra Moraru, Department of Pure Mathematics, University of Waterloo

"Hitchin pairs on higher-dimensional manifolds"

Thursday, September 7, 2023 1:00 pm - 1:00 pm EDT (GMT -04:00)

Kirby Calculus Seminar

Organizational Meeting

We will discuss the format of the seminar and potential goals for the semester.

MC 5403

Thursday, September 7, 2023 2:30 pm - 2:30 pm EDT (GMT -04:00)

Geometry & Topology Seminar

Stephen Melczer, Department of Combinatorics & Optimization, University of Waterloo

"A Geometric Approach to Analytic Combinatorics"

Thursday, September 7, 2023 4:30 pm - 4:30 pm EDT (GMT -04:00)

Analysis Seminar

Tomer Zimhoni, Ben Gurion University

"Random Permutations from Free Products"

Monday, September 11, 2023 2:30 pm - 2:30 pm EDT (GMT -04:00)

Colloquium

Stuart White, Oxford University

"Simple amenable C*-algebras"

C*-algebras are norm closed self-adjoint algebras of bounded operators on Hilbert space, and so arise naturally from unitary representations of groups and group actions, amongst other constructions. Large scale work of many researchers over decades has recently culminated in a definitive classification theorem for simple amenable C*-algebras of finite topological dimension.

Tuesday, September 12, 2023 12:00 pm - 12:00 pm EDT (GMT -04:00)

Learning Seminar on Sieve Methods

Schedule: Tuesdays at 12pm in MC5403 and Thursdays at 1pm in MC5417.

Description: Loosely speaking, sieving consists in slowly removing undesirable elements from an initial set and estimating the size of the remaining set. A common example is Erathostene’s sieve where, to count how many primes there are between 1 and N, one first removes numbers which are divisible by two, then those divisible by three, and so on.

Tuesday, September 12, 2023 1:00 pm - 1:00 pm EDT (GMT -04:00)

Operator Algebras Learning Seminar

Thomas Bray, Department of Pure Mathematics, University of Waterloo

"Free Products of von Neumann Algebras"

I will speak about free products of von Neumann algebras. The goal is to speak about a recent paper of Boutonnet, Drimbe, Ioana, and Popa which solves a non-separable version of the free group factor problem.

MC 5417

Tuesday, September 12, 2023 2:30 pm - 2:30 pm EDT (GMT -04:00)

Differential Geometry Working Seminar

Amanda Petcu, Department of Pure Mathematics, University of Waterloo

"Partial progress on a conjecture of Donaldson by Fine and Yao"

Wednesday, September 13, 2023 1:30 pm - 1:30 pm EDT (GMT -04:00)

Algebraic Geometry Working Seminar

Organizational Meeting

We will discuss/determine the time this seminar will be held this term as well as determine the first set of speakers. If you wish to have input or wish to talk and are unable to attend please contact Robert Harris or Yash Singh.

MC 5403