University COVID-19 update

The University of Waterloo is constantly updating our most Frequently Asked Questions.

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 - April 2013

Wednesday, April 24, 2013 — 1:00 PM EDT

Jamie Murdoch, Pure Mathematics, University of Waterloo

"Almost every set of the correct density is Λ(p)"

I give an overview of Bourgain’s argument in his 1989 paper, Bounded orthogonal systems and the Λ(p)-set problem. Through a rather complex argument, Bourgain was able to show, using elementary probabilistic methods, that for any 2 < p < ∞, almost every random set is Λ(p), where the mean density of the random sets is 2/p. Prior attempts at this problem

Wednesday, April 24, 2013 — 9:00 AM EDT

Chris Ramsey, Pure Mathematics, University of Waterloo

"Maximal Ideal Space Techniques in Non-Selfadjoint Operator Algebras"

Tuesday, April 23, 2013 — 3:00 PM EDT

Omar Leon Sanchez, Pure Mathematics, University of Waterloo

"NIP X"

We correct the argument from the last talk to prove that every formula has an honest definition.

Wednesday, April 17, 2013 — 4:30 PM EDT

Jordan Hamilton, Pure Mathematics, University of Waterloo

"Once Morse Unto The Breach, Dear Friends"

In this final talk of the term we will finish our discussion regarding the existence of Morse functions on manifolds in Euclidean space. In fact, as was teased at the end of the last talk, we will be able to find a very large number of such functions. This has some interesting applications, which we will also examine.

Wednesday, April 17, 2013 — 2:30 PM EDT

Jason Bell, Pure Mathematics, University of Waterloo

"Gromov's theorem VII: linear groups, continued"

We have seen that Gromov's theorem for linear groups reduces to three claims. We will quickly recall these claims and then work on proving the last claim, which shows that under very general conditions that a linear group must have subexponential growth.

Tuesday, April 16, 2013 — 3:00 PM EDT

Omar Leon Sanchez, Pure Mathematics, University of Waterloo

"NIP theories VIII (or IX)"

We define honest definitions and give some examples.

Friday, April 12, 2013 — 3:30 PM EDT

Mahmoud Filali, University of Oulu

"Interpolation sets and quotients of function spaces on a locally compact group"

Using interpolation sets, we devise a fairly general method for estimating the size of quotients of function spaces on a locally compact group. This unifies approaches followed by many other authors (including us) to obtain particular cases. This is joint work with Jorge Galindo, University of Jaume I, Spain.

Thursday, April 11, 2013 — 3:30 PM EDT

Rahim Moosa, Pure Mathematics, University of Waterloo

"Twisted Lang-Weil and the elementary theory of the Frobenius automorphism"

Wednesday, April 10, 2013 — 4:30 PM EDT

Robert Garbary, Pure Mathematics, University of Waterloo

"Manifolds in Euclidean Spaces"

So far we have been studying a manifold M along with a smooth function f on M whose only critical points are non-degenerate. We have made a lot of cool progress, but there is still a major hole: which manifolds actually admit these functions? I’m going to address this question when our manifold actually comes with an embedding into Euclidean space.

Wednesday, April 10, 2013 — 3:30 PM EDT

Ming-Tao Chuan, Stony Brook University & Simons Center for Geometry and Physics

"Hermitian-Yang-Mills connections under conifold transitions"

Fu, Li, and Yau proved the existence of balanced metrics on certain non-Kahler manifolds which are obtained by conifold transitions of Calabi-Yau threefolds. In this talk, I will describe a result concerning the existence of Hermitian-Yang-Mills connections on holomorphic vector bundles with respect to Fu-Li-Yau's metric.

Wednesday, April 10, 2013 — 2:30 PM EDT

Jason Bell, Pure Mathematics, University of Waterloo

"Gromov’s theorem VII: linear groups,continued"

We continue to investigate finitely generated subgroups of the general linear group and in particular when they contain free subgroups and free subsemigroups.

Friday, April 5, 2013 — 3:30 PM EDT

David Penneys, University of Toronto

“GJS C*-algebras”

Guionnet-Jones-Shlyakhtenko (GJS) gave a diagrammatic proof of a
result of Popa which reconstructs a subfactor from a subfactor planar
algebra. In the process, certain canonical graded *-algebras with
traces appear. In the GJS papers, they show that the von Neumann
algebras generated by the graded algebras are interpolated free group

Thursday, April 4, 2013 — 3:30 PM EDT

David McLaughlin, Department of Pure Mathematics, University of Waterloo

"Projective Posets"

A poset is said to be projective if its only idempotent polymorphisms  
are projections. We will try to classify projective posets using  
combinatorial properties. Projective posets of height 1 are completely  
understood. Moreover, we know exactly when posets of height 1 have  
Taylor polymorphisms. We will also discuss known results about posets  
of greater height.

Thursday, April 4, 2013 — 2:30 PM EDT

Michael Rubinstein, Department of Pure Mathematics, University of Waterloo

“Summation techniques for the Riemann zeta function”

I'll describe several new formulae for the Riemann zeta function, a few of which have application to high precision computation, and also discuss some unifying summation methods.

Wednesday, April 3, 2013 — 4:30 PM EDT

Ty Ghaswala, Department of Pure Mathematics, University of Waterloo

“Dot dash dash dot.  Dot dot dash.  Dash dot.”

Wednesday, April 3, 2013 — 2:30 PM EDT

Jason Bell, Department of Pure Mathematics, University of Waterloo

“Gromov's theorem VI: linear groups and the ping-pong lemma”

We'll continue our look at linear groups and look at the so-called ping-pong lemma, which is a tool used to prove the existence of free subgroups and free subsemigroups.

S M T W T F S
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
  1. 2020 (69)
    1. July (1)
    2. June (1)
    3. May (3)
    4. March (16)
    5. February (26)
    6. January (22)
  2. 2019 (199)
    1. December (7)
    2. November (26)
    3. October (19)
    4. September (13)
    5. August (7)
    6. July (12)
    7. June (18)
    8. May (22)
    9. April (11)
    10. March (25)
    11. February (17)
    12. January (22)
  3. 2018 (219)
  4. 2017 (281)
  5. 2016 (335)
  6. 2015 (211)
  7. 2014 (235)
  8. 2013 (251)
    1. December (7)
    2. November (35)
    3. October (37)
    4. September (19)
    5. August (10)
    6. July (22)
    7. June (21)
    8. May (19)
    9. April (16)
    10. March (27)
    11. February (20)
    12. January (18)
  9. 2012 (135)