## Contact Info

Pure MathematicsUniversity of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x33484

Fax: 519 725 0160

Email: puremath@uwaterloo.ca

**Winter term update:** Visit our COVID-19 Information website for information on our response to the pandemic.

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

Friday, February 28, 2014 — 3:30 PM EST

Friday, February 28, 2014 — 2:30 PM EST

Thursday, February 27, 2014 — 1:30 PM EST

In my talk I present results from the joint paper [1]. We prove that the intersection G ∩ A of an infinite geometric progression

Wednesday, February 26, 2014 — 10:30 PM EST

“Semisimple Lie Algebras”

Tuesday, February 25, 2014 — 2:30 PM EST

Thursday, February 20, 2014 — 4:00 PM EST

We will discuss a technique which allows one to approximate singular varieties by smooth spaces called stacks. As an application, we will address the following question, as well as some generalizations: given a linear action of a group G on complex n-space C^n, when is the quotient C^n/G a singular variety? We will also mention some applications to Hodge theory and to derived equivalences.

Thursday, February 20, 2014 — 2:19 PM EST

Wednesday, February 19, 2014 — 4:00 PM EST

Tuesday, February 18, 2014 — 4:00 PM EST

Friday, February 14, 2014 — 3:30 PM EST

Thursday, February 13, 2014 — 4:30 PM EST

This talk is a homage to the late Professor Herbert Wilf's book of the same title. We will discuss several elementary counting problems and solve them using generating functional techniques. I will also include several identities that have appeared in my own work as well as in some prominent papers in number theory.

Thursday, February 13, 2014 — 1:30 PM EST

The study of periods of automorphic forms using the theta correspondence

Wednesday, February 12, 2014 — 2:30 PM EST

In the second talk, we'll discuss Skolem's method and the analytic arc theorem as a means of studying the action of the automorphism group on a variety. If time remains, we'll apply this method to show that if X is a surface defined over a number field and X has an automorphism that does not preserve a non-constant fibration then there is a number field K such that the K-points of X are Zariski dense.

Tuesday, February 11, 2014 — 2:30 PM EST

Monday, February 10, 2014 — 4:00 PM EST

Friday, February 7, 2014 — 3:30 PM EST

Friday, February 7, 2014 — 2:30 PM EST

Thursday, February 6, 2014 — 1:30 PM EST

Wednesday, February 5, 2014 — 4:00 PM EST

Wednesday, February 5, 2014 — 2:30 PM EST

Tuesday, February 4, 2014 — 2:30 PM EST

Monday, February 3, 2014 — 4:00 PM EST

University of Waterloo

200 University Avenue West

Waterloo, Ontario, Canada

N2L 3G1

Departmental office: MC 5304

Phone: 519 888 4567 x33484

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