## Contact Info

Pure MathematicsUniversity of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x43484

Fax: 519 725 0160

Email: puremath@uwaterloo.ca

Tuesday, November 30, 2021 — 2:30 PM EST

**Iva Halacheva, Northeastern University**

"Crystals and cacti in representation theory"

Monday, November 29, 2021 — 2:30 PM EST

**Nick Ramsey, University of California, Los Angeles**

"Kim-Independence"

Friday, November 26, 2021 — 3:00 PM EST

**Jonathan Zhu, Princeton University**

"Min-max theory for capillary surfaces"

Friday, November 26, 2021 — 1:25 PM EST

****NOTE NEW TIME****

**Qaasim Shafi, Imperial College London**

"Gromov-Witten invariants of Blow-ups"

Thursday, November 25, 2021 — 2:30 PM EST

**Arunima Bhattacharya, University of Washington**

"Nonlinear PDEs in Lagrangian geometry"

Wednesday, November 24, 2021 — 4:00 PM EST

**Samuel Harris, Texas A&M University**

"Applications of graph coloring games to quantum automorphism groups"

Tuesday, November 23, 2021 — 10:00 AM EST

**Catherine St-Pierre, School of Computer Science, University of Waterloo**

"An Introduction + Connexion to Algebraic Geometry"

Friday, November 19, 2021 — 2:30 PM EST

**John Huerta, University of Lisbon**

"Bundle gerbes on Lie supergroups"

Thursday, November 18, 2021 — 4:00 PM EST

**Nicolas Banks, Department of Pure Mathematics, University of Waterloo**

"ABC Conjecture and Fermat's Last Theorem for Polynomials"

Wednesday, November 17, 2021 — 4:00 PM EST

**Boyu Li, University of Waterloo and University of Windsor**

"Zappa-Szep product, self-similar action, and equivalent groupoids"

Wednesday, November 17, 2021 — 2:30 PM EST

**Daren Cheng, Department of Pure Mathematics, University of Waterloo**

"Incompressible minimal surfaces and topological consequences of positive scalar curvature (Part 2)"

Tuesday, November 16, 2021 — 10:00 AM EST

**Brady Ali Medina, University of Waterloo**

"Rank-2 odd degree moduli spaces of co-Higgs bundles"

This talk will be a continuation of my previous talk, we are going to show how the smooth moduli space of rank-2, odd-degree co-Higgs bundles can be interpreted as a kind of universal elliptic curve.

Zoom meeting:

- Meeting ID: 811 2094 8164
- Passcode: 033003

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

**Daniel Fadel, Peking University**

"Asymptotics of finite energy monopoles on AC 3-manifolds"

Wednesday, November 10, 2021 — 4:00 PM EST

**Brent Nelson, Michigan State University**

"Free Stein Dimension"

Wednesday, November 10, 2021 — 2:30 PM EST

**Jean-Pierre Bourguignon, President, European Research Council**

"What is a spinor?"

Tuesday, November 9, 2021 — 10:00 AM EST

**Brady Ali Medina, University of Waterloo**

"Rank-2 odd degree moduli spaces of co-Higgs bundles"

Monday, November 8, 2021 — 10:00 AM EST

**Alexi Block Gorman, Fields Institute**

"Fractal Dimensions and Definability from Büchi Automata"

Friday, November 5, 2021 — 2:30 PM EDT

**Vasileos (Hector) Papoulias, Oxford University**

"Spin(7) Instantons and HYM Connections on Asymptotically Conical Calabi-Yau Fourfolds"

Wednesday, November 3, 2021 — 4:00 PM EDT

**Robert Martin, University of Manitoba**

"Non-commutative rational multipliers of the Fock space"

Wednesday, November 3, 2021 — 2:30 PM EDT

**Anton Ilianshenko, Department of Pure Mathematics, University of Waterloo**

"Riemannian Submersions, Part II"

Wednesday, November 3, 2021 — 12:00 PM EDT

**Kseniya Garaschuk, University of the Fraser Valley**

"Injecting life into real-life applications"

Tuesday, November 2, 2021 — 10:00 AM EDT

**Ruxandra Moraru, Department of Pure Mathematics, University of Waterloo**

"Higgs Bundles"

Last week, Robert introduced the notion of Higgs bundle over Riemann surfaces. In this talk, I will provide some background on Higgs bundles and explain how they are related to the Yang-Mills equations and the cotangent bundle of the moduli space of stable bundles. I will also discuss how Higgs bundles can be generalized to higher-dimensional complex manifolds.

Zoom meeting:

University of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x43484

Fax: 519 725 0160

Email: puremath@uwaterloo.ca

University of Waterloo

University of Waterloo

43.471468

-80.544205

200 University Avenue West

Waterloo,
ON,
Canada
N2L 3G1

The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Office of Indigenous Relations.