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Please note: The University of Waterloo is closed for all events until further notice.

Events - February 2021

Friday, February 26, 2021 — 2:30 PM EST

Boyu Zhang, Princeton University

"Several detection results of Khovanov homology on links"

Wednesday, February 24, 2021 — 11:00 AM EST

Christopher Lang, Department of Pure Mathematics, University of Waterloo

"The Many Faces of Monopoles"

In this talk, we introduce the four ways of looking at monopoles: solutions of the Bogomolny equations, Nahm data, spectral curves, and rational maps. We then discuss the relationships between these equivalent descriptions and some of the advantages and disadvantages of using them.

Monday, February 22, 2021 — 4:00 PM EST

Andrew Granville, Université de Montréal

"The Frobenius postage stamp problem and boundary turbulence"

Friday, February 12, 2021 — 2:30 PM EST

Siqi He, Simons Center, Stony Brook

"The compactness problem for the Hitchin-Simpson equations"

The Hitchin-Simpson equations defined over a Kähler manifold are first order, non-linear equations for a pair of a connection on a Hermitian vector bundle and a 1-form with values in the endomorphism bundle. We will describe the behavior of solutions to the Hitchin–Simpson equations with norms of these 1-forms unbounded. We will also discuss the deformation problem of Taubes' Z2 harmonic 1-form.

Thursday, February 11, 2021 — 11:00 AM EST

Shay Fuchs, University of Toronto Mississauga

"A Fun, Engaging, and Effective Approach to Teaching Calculus"

Wednesday, February 10, 2021 — 11:00 AM EST

Ragini Singhal, Department of Pure Mathematics, University of Waterloo

"Six dimensional nearly Kähler manifolds of Cohomogeneity one"

We will discuss a paper by Podesta-Spiro where the authors consider six-dimensional strict nearly Kähler manifolds acted on by a compact, cohomogeneity one automorphism group G. We will see how they classify the compact manifolds of this class up to G-diffeomorphisms.

Friday, February 5, 2021 — 2:30 PM EST

Leandro Lichtenfelz, University of Pennsylvania

"Smooth Fibrations of the 3-Sphere by Simple Closed Curves"

Wednesday, February 3, 2021 — 11:00 AM EST

Caleb Suan, Department of Pure Mathematics, University of Waterloo

"Pinching Estimates and Eigenvalues of Curvature Operators"

In this talk, we will go through various results from the paper “Curvature Operators: Pinching Estimates and Geometric Examples” by Bourguignon and Karcher, which relate bounds on sectional curvatures of manifolds to eigenvalues of curvature operators.

Zoom meeting: https://zoom.us/j/93324862932?pwd=dUdCMGJZL1A3UTBpOXVYNVROdHpKUT09

Monday, February 1, 2021 — 4:00 PM EST

Bianca Viray, University of Washington

"Isolated points on curves"

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