## 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

**Returning to in-person experiences in February:** Visit the COVID-19 website for more information.

Thursday, March 31, 2016 — 2:30 PM EDT

**Clair Dai, Pure Mathematics Department, University of Waterloo **

“Introduction to Marsden-Weinstein Symplectic Reduction”

Thursday, March 31, 2016 — 2:30 PM EDT

**Matt Valeriote, McMaster University **

“Testability Part 2”

Wednesday, March 30, 2016 — 3:30 PM EDT

**Jonathan Stephenson, Department of Pure Mathematics, University of Waterloo **

“Cost functions”

Wednesday, March 30, 2016 — 2:30 PM EDT

**Satish Pandey, Department of Pure Mathematics, University of Waterloo **

“Projections in von Neumann Algebras”

Tuesday, March 29, 2016 — 3:30 PM EDT

**Jason Bell, Department of Pure Mathematics, University of Waterloo **

“Proof of the Main Theorem”

MC 5479

**Please Note Room**

Tuesday, March 29, 2016 — 2:30 PM EDT

**Stanley Xiao, Department of Pure Mathematics, University of Waterloo **

“The Maynard-Tao sieve”

Tuesday, March 29, 2016 — 1:00 PM EDT

**Spiro Karigiannis, Department of Pure Mathematics, University of Waterloo **

“Section 3 of the Lee/Parker paper on the Yamabe problem”

I will cover section 3 of the paper, on the model case of the sphere. This will include a proof of the Obata Theorem.

MC 5479

Tuesday, March 29, 2016 — 10:30 AM EDT

**Blake Madill, Department of Pure Mathematics, University of Waterloo **

“Qmax(R)continued”

Thursday, March 24, 2016 — 2:30 PM EDT

**Matt Valeriote, McMaster University **

“Testability Part 2”

Wednesday, March 23, 2016 — 3:30 PM EDT

**Mohammad Mahmoud, Department of Pure Mathematics, University of Waterloo **

“Closure properties of K-trivial sets”

Wednesday, March 23, 2016 — 2:30 PM EDT

**Shaoshi Chen, Chinese Academy of Sciences, Beijing**

"Creative Telescoping for Algebraic Functions"

Wednesday, March 23, 2016 — 2:30 PM EDT

**Kari Eifler, Department of Pure Mathematics, University of Waterloo **

“Borel Functional Calculus - Part II ”

We will complete the construction of the Borel functional calculus.

MC 5417

Wednesday, March 23, 2016 — 11:00 AM EDT

**Henry Liu, Department of Pure Mathematics, University of Waterloo **

“Deligne–Mumford Compactification (Part 2)”

Tuesday, March 22, 2016 — 3:30 PM EDT

**Omar Leon Sanchez, McMaster University **

“Chapter 4”

We begin to sketch a proof of the main theorem.

MC 5403

Tuesday, March 22, 2016 — 10:30 AM EDT

**Hongdi Huang, Department of Pure Mathematics, University of Waterloo **

“The maximal ring of right fractions, continued”

Monday, March 21, 2016 — 4:00 PM EDT

**Nikhil Srivastava, University of California at Berkeley **

“Ramanujan Graphs from Finite Free Convolutions”

Monday, March 21, 2016 — 1:00 PM EDT

**Blake Madill, Department of Pure Mathematics, University of Waterloo**

"Köthe's conjecture, ideals, radicals, and all things nil"

Friday, March 18, 2016 — 3:30 PM EDT

**Matthew Wiersma, Department of Pure Mathematics, University of Waterloo **

“Lp-Fourier and Fourier-Stieltjes algebras”

Thursday, March 17, 2016 — 2:30 PM EDT

**Matt Valeriote, McMaster University **

“Testability”

Thursday, March 17, 2016 — 1:00 PM EDT

**Steven Lazzaro, Department of Pure Mathematics, University of Waterloo **

“Definability of Types in Stable Theories”

Wednesday, March 16, 2016 — 3:30 PM EDT

**Mohammad Mahmoud, Department of Pure Mathematics, University of Waterloo **

“Number of K-creative sets”

Last time we have seen an upper bound on the number of K-trivial sets via some constant b. This week we compute a lower bound which as we will see is also a ”tight” bound (close to the exact number).

MC 5403

Wednesday, March 16, 2016 — 2:30 PM EDT

**Sam Harris, Department of Pure Mathematics, University of Waterloo **

“Borel Functional Calculus - Part I ”

We will begin the construction of the Borel functional calculus.

MC 5417

Wednesday, March 16, 2016 — 11:00 AM EDT

**Henry Liu, Department of Pure Mathematics, University of Waterloo **

“Deligne–Mumford compactification”

Tuesday, March 15, 2016 — 4:00 PM EDT

**Michael Szestopalow, Combinatorics & Optimization, University of Waterloo**

"Brouwer and Sperner’s Bogus Journey"

Abstract: In the award-winning “Brouwer and Sperner’s Excellent Adventure”, Michael and Michael discussed the connection between Brouwer’s Fixed Point Theorem and Sperner’s Lemma. In this long-awaited sequel, Michael will discuss some applications of Sperner’s Lemma; in particular, Michael will consider cake-cutting and the fundamental theorem of algebra.

MC 5501

Tuesday, March 15, 2016 — 3:30 PM EDT

**Omar Leon Sanchez, McMaster University**

"Statement of the Main Theorem"

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 Indigenous Initiatives Office.