Events - February 2022

Friday, February 18, 2022 — 2:30 PM EST

Elana Kalashnikov, Department of Pure Mathematics

"Unwinding the Gelfand—Cetlin toric degeneration on the mirror"

Thursday, February 17, 2022 — 2:00 PM EST

Fok-Shuen Leung, University of British Columbia

"Teaching and learning roles in extremely large math courses"

Starting next year, the Math Department at UBC will teach extremely large consolidated courses of around 4000 undergraduate students each. In this talk, I'll describe how we've split the jack-of-all-trade "instructor" role into dedicated specialist roles, with the goal of improving the experience for everyone involved -- especially the students.

Thursday, February 17, 2022 — 1:00 PM EST

Anton Iliashenko, Department of Pure Mathematics, University of Waterloo

"Curvature of almost Hermitian manifolds"

Let $(M, g, J)$ be a Riemannian manifold with $g$-orthogonal almost complex structure $J$. The Riemann curvature tensor satisfies certain identities involving the torsion $\nabla J$. We will focus on the Kahler case (when $\nabla J = 0$) and if time permits we will make some remarks about the general case.

This seminar will be held jointly online and in person:

Wednesday, February 16, 2022 — 4:00 PM EST

Aaron Tikuisis, University of Ottawa

"Classifying embeddings of C*-algebras"

Friday, February 11, 2022 — 2:30 PM EST

Alexandre Girouard, Université Laval

"A tale of isoperimetry and eigenvalues"

Thursday, February 10, 2022 — 1:00 PM EST

Spencer Whitehead, Department of Pure Mathematics, University of Waterloo

"Integrality theorems for symmetric instantons"

A symmetric instanton is a solution to the finite-energy anti-self-dual instanton equation on R^4 in which the connection commutes with some perscribed group of symmetries. This talk introduces the symmetric ADHM equations for structure group SU(N), and how index-theoretic methods can be used to derive integrality theorems for different symmetry groups.

Wednesday, February 9, 2022 — 4:00 PM EST

Ping Zhong, University of Wyoming

"A surprising connection between Brown measures of Voiculescu's circular element and its elliptic deformations"

Tuesday, February 8, 2022 — 2:30 PM EST

Gaston N'Guerekata, Morgan State University

"Almost automorphic evolution equations"

Thursday, February 3, 2022 — 2:00 PM EST

Jon Herman, University of Toronto Mississauga

"An Overview of MathMatize"

Thursday, February 3, 2022 — 1:00 PM EST

Spiro Karigiannis, Department of Pure Mathematics, University of Waterloo

"Intro to calibrated geometry"

I will give a brief introduction to the ideas of calibrated geometry, as introduced in 1982 by Harvey-Lawson. In particular I will focus on the Kahler, special Lagrangian, and associative calibrations.

Wednesday, February 2, 2022 — 4:00 PM EST

Roberto Hernandez-Palomares, Texas A&M University

"Q-systems and higher unitary idempotent completion for C*-algebras"

Q-systems were introduced by Longo to study finite index inclusions of infinite von Neumann factors. A Q-system is a unitary version of a Frobenius algebra object in a tensor category or a C* 2-category. By work of Müger, Q-systems give an axiomatization of the standard invariant of a finite index subfactor.

Wednesday, February 2, 2022 — 2:30 PM EST

Aissa Wade, Penn State University

"On generalized contact geometry"

Generalized contact manifolds are odd-dimensional analogues of generalized complex manifolds. In this talk, I will review aspects of generalized contact geometry. I also will discuss interactions between generalized contact geometry and other areas of mathematics. Examples of generalized contact manifolds will be provided. If time permits, I’ll explain the integration problem for holomorphic Jacobi manifolds.

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