## University COVID-19 update

### Questions about buildings and services? Visit the list of Modified Services.

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

# Events by month

## February 2018

Sun Mon Tue Wed Thu Fri Sat
28
29
30
31
3

4
8
10

11
15
17

18
19
20
21
22
24

25
1
2
3

### Number Theory Seminar

Thursday, February 1, 2018 — 1:30 PM EST

Peng-Jie Wong, University of Lethbridge

​"Holomorphy of L-functions and its applications"

The analytic properties of L-functions have been one of the central topics in number theory as they have a deep connection with the distribution of primes. For example, the Riemann zeta function led to a proof of the celebrated prime number theorem. In general, for any number field, there are primes and L-functions of similar nature. In this talk, we shall discuss the holomorphy of such L-functions and its applications to the distributions of the associated primes.

Thursday, February 1, 2018 — 4:00 PM EST

Justin Laverdure, Department of Pure Mathematics, University of Waterloo

"The Hyperreals (Infinitesimals and the transfer principle)"

### Universal Algebra Seminar

Friday, February 2, 2018 — 2:00 PM EST

Nasir Sohail, Wilfrid Laurier University

"Ultraproducts and congruence distributive varieties - Part 1"

I shall go from (direct) product to ultraproduct using a particular congruence. The ultraproduct of a finite set of finite algebras will be considered as a special case.

MC 5479

### Analysis Seminar

Friday, February 2, 2018 — 2:30 PM EST

Vern Paulsen, University of Waterloo

"Complexity and Capacity Bounds for Operator Systems and Quantum Channels"

### Geometry & Topology Seminar

Friday, February 2, 2018 — 2:30 PM EST

Eli Shamovich, Department of Pure Mathematics, University of Waterloo

"Real Fibered Morphism and Definite Determinantal Representations"

### Group Theory Seminar

Monday, February 5, 2018 — 12:30 to 12:30 PM EST

John Sawatzky, Department of Pure Mathematics, University of Waterloo

"Ultraproducts and some loose ends"

We'll complete the metric ultraproduct construction, and show that a sofic group embeds in an ultraproduct of symmetric groups equipped with the Hamming distance. If possible we'll tie up some of the loose ends from last time, e.g. the dependence on that constant r, and residually finite groups.

MC 5403

### Pure Math Colloquium

Monday, February 5, 2018 — 4:00 PM EST

Boris Khesin, University of Toronto

"Integrability and non-integrability in pentagram maps"

### Algebra Learning Seminar

Tuesday, February 6, 2018 — 10:00 to 10:00 AM EST

Chris Schafhauser, Department of Pure Mathematics, University of Waterloo

"More on GLq(2) and SLq(2)"

Last week Hongdi constructed the Hopf algebra structure on GLq(2) and SLq(2).  I will discuss the natural coaction of these objects on the quantum plane kq(2).

MC 5403

### Number Theory Seminar

Tuesday, February 6, 2018 — 1:30 PM EST

Jeffrey Shallit, David R. Cheriton School of Computer Science, University of Waterloo

"Waring's theorem for binary k'th powers and palindromes"

### Algebraic Geometry Learning Seminar

Tuesday, February 6, 2018 — 3:00 PM EST

Diana Castaneda Santos, Department of Pure Mathematics, University of Waterloo

"Finite and integral morphisms"

We will continue studying properties of finite and integral morphisms. We will use properties of algebra homomorphisms to prove that finite morphisms have finite fibers and that they are affine local on the target. We will also prove that integral morphisms are closed and we will study some examples. Time permitting we will introduce morphisms (locally) of finite type.

MC 5417

Tuesday, February 6, 2018 — 4:30 PM EST

Arthur Mehta, Department of Pure Mathematics, University of Waterloo

"An Introduction to Quantum Graphs, Chromatic Numbers and Lovász Inequalties"

### Postdoctoral Seminar

Wednesday, February 7, 2018 — 2:00 PM EST

Christopher Schafhauser, Department of Pure Mathematics, University of Waterloo

"An Embedding Theorem for C*-algebras"

### Universal Algebra Seminar

Friday, February 9, 2018 — 2:00 PM EST

Nasir Sohail, Wilfrid Laurier University

"Ultraproducts and congruence distributive varieties - Part 2"

I shall prove that the class of subdirectly irreducible algebras in a congruence distributive variety V generated by a class K is contained in the class obtained by taking the closures under S (subalgebras) and H (homomorphisms) of the class of all ultraproducts over K.

MC 5479

### Analysis Seminar

Friday, February 9, 2018 — 2:30 PM EST

Sam Kim, Department of Pure Mathematics, University of Waterloo

"On Synchronous Quantum Games"

### Group Theory Seminar

Monday, February 12, 2018 — 12:30 to 12:30 PM EST

Ehsaan Hossain, Department of Pure Mathematics, University of Waterloo

"Ultraproducts again"

We'll finish the proof for ordinary products and start the ultraproduct construction.

MC 5403

### Baker-DeMarco Learning Seminar

Monday, February 12, 2018 — 1:30 PM EST

Matt Satriano, Department of Pure Mathematics, University of Waterloo

"Introduction to the work of Baker and DeMarco"

We give an overview of the following result of Baker--DeMarco: if $\varphi, \psi \in\mathbb{C}(z)$ have infinitely many preperiodic points in common, then all of their preperiodic points are the same. We discuss the connection between this complex analytic statement and non-archimedean Berkovich spaces.

MC 5403

### Pure Math Colloquium

Monday, February 12, 2018 — 4:00 PM EST

Omer Tamuz, Caltech

​"The Poisson boundary, strong amenability and the infinite conjugacy class property"

### Algebraic Geometry Learning Seminar

Tuesday, February 13, 2018 — 3:00 PM EST

David Urbanik, Department of Pure Mathematics, University of Waterloo

"Chevalley's Theorem on Constructible Sets in the Language of Schemes"

### Postdoctoral Seminar

Wednesday, February 14, 2018 — 2:00 PM EST

Mizanur Rahaman, Department of Pure Mathematics, University of Waterloo

"Eventually Entanglement Breaking Maps"

### Universal Algebra Seminar

Friday, February 16, 2018 — 2:00 PM EST

Justin Laverdure, Department of Pure Mathematics, University of Waterloo

If an algebra A is finite, what can we say about the variety HSP(A)? We'll show that such varieties are locally finite, i.e. its members which are finitely generated are in fact finite. Further, if such a variety has any infinite subdirectly irreducible algebras, then in fact it has arbitrarily large finite ones as well.

MC 5479

### Analysis Seminar

Friday, February 16, 2018 — 2:30 PM EST

Boyu Li, Department of Pure Mathematics, University of Waterloo

"Examples of Free Semigroupoid Algebras"

### Geometry & Topology Seminar

Friday, February 16, 2018 — 2:30 PM EST

Ali Aleyasin, Department of Pure Mathematics, University of Waterloo

"Calabi problem on conifolds"

### Geometry & Topology Seminar

Friday, February 23, 2018 — 2:30 PM EST

Sebastien Picard, Columbia University

"The Anomaly flow over Riemann surfaces"

### Baker-DeMarco Learning Seminar

Monday, February 26, 2018 — 1:30 PM EST

Matt Satriano, Department of Pure Mathematics, University of Waterloo

"Short Ride in a Height Machine"

This talk is meant to be a quick introduction to the theory of height functions on projective varieties defined over number fields.  After describing the fundamental case of heights on projective space, we go into the basics of Weil's height machine.  For any projective variety, this gives a height function attached to each linear equivalence class of Cartier divisors (or each line bundle), satisfying a variety of pleasant functorial properties.

### Number Theory Seminar

Tuesday, February 27, 2018 — 1:30 PM EST

Francesco Cellarosi, Queen's University

"Statistical properties of B-free numbers"

B-free numbers were introduced by Erdős as a generalization of squarefree integers. I will present some results about the statistical properties of B-free numbers and a dynamical systems naturally associated to them. In particular, I will discuss a central limit theorem resembling a result by J. Beck on irrational circle rotations. Joint work with M. Avdeeva and Ya.G. Sinai.

MC 5417

### Algebraic Geometry Seminar

Tuesday, February 27, 2018 — 3:00 PM EST
Patrick Naylor, Department of Pure Mathematics, University of Waterloo   "Almost (generically) free of Chevalley"   This week, we'll go through the gritty details of Chevalley's theorem. Along the way, we'll see Grothendieck's Generic Freeness Lemma, and get to review some facts about rings. We'll then use this to prove the Nullstellensatz.

### Pure Math Post Doc Seminar

Wednesday, February 28, 2018 — 2:00 PM EST

Sascha Troscheit, Pure Math Department, University of Waterloo

"Non-linear fractals and Hausdorff measure"

### February 2018

S M T W T F S
28
29
30
31
3
4
8
10
11
15
17
18
19
20
21
22
24
25
1
2
3
1. 2021 (21)
1. March (2)
2. February (9)
3. January (10)
2. 2020 (103)
1. December (10)
2. November (12)
3. October (4)
4. September (3)
5. August (1)
6. July (5)
7. June (1)
8. May (3)
9. March (16)
10. February (26)
11. January (22)
3. 2019 (199)
4. 2018 (212)
1. December (2)
2. November (32)
3. October (27)
4. September (19)
5. August (4)
6. July (9)
7. June (13)
8. May (17)
9. April (13)
10. March (28)
11. February (27)
12. January (21)
5. 2017 (281)
6. 2016 (335)
7. 2015 (211)
8. 2014 (235)
9. 2013 (251)
10. 2012 (135)