Tomer Zimhoni, Ben Gurion University
"Random Permutations from Free Products"
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.
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.
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
Amanda Petcu, Department of Pure Mathematics, University of Waterloo
"Partial progress on a conjecture of Donaldson by Fine and Yao"
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
Michael Albanese, Department of Pure Mathematics, University of Waterloo
"Handles"
We introduce handles as the fundamental building blocks of manifolds and begin to discuss the notion of a handle decomposition. The discussion will apply to all dimensions.
MC 5403
Sergio Giron Pacheco, University of Oxford
Tensor category equivariant Z-stability
In this talk I will discuss D-stability for strongly self absorbing C*-algebras D and its relevance for the classification of C*-algebras. I will then discuss an equivariant notion of D-stability with respect to an action of a tensor category and an adaptation of a classical result of Kirchberg to this setting.
This seminar will be held both online and in person:
Zhenchao Ge, Department of Pure Mathematics, University of Waterloo
"Irregularities of Dirichlet L-functions and a parity bias in gaps of zeros"
Anton Iliashenko, Department of Pure Mathematics, University of Waterloo
"A special class of harmonic map submersions with calibrated fibres"
Say we have a conformally horizontal submersion between two Riemannian manifolds of dimensions n and k respectively. If the domain admits a closed (n-k)-calibration form, then we can define a special type of maps which we call conformally calibrated (or Smith) maps. We will show that these maps are k-harmonic and we will see a couple of examples.
MC 5403