October 2019

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Tuesday, October 1, 2019 — 2:00 PM EDT

Matthew Harrison-Trainor, Victoria University of Wellington

"Introcomputability"

Wednesday, October 2, 2019 — 3:30 PM EDT

Carlos Cabrelli, Universidad de Buenos Aires

"Recent Advances in Dynamical Sampling"

Thursday, October 3, 2019 — 11:00 to 11:00 AM EDT

Steven Lazzaro, McMaster University

"NIP III"

We begin section 2.2 of Simon's Guide to NIP theories.

MC 5413

Friday, October 4, 2019 — 2:30 PM EDT

Fenglong You, University of Alberta

"Structures of relative Gromov-Witten theory"

Monday, October 7, 2019 — 4:00 PM EDT

Jeffrey Diller, University of Notre Dame

"A transcendental first dynamical degree"

Tuesday, October 8, 2019 — 1:30 PM EDT

Ertan Elma, Department of Pure Mathematics, University of Waterloo

"Discrete Mean Values of Dirichlet L-functions"

Let χ be a Dirichlet character modulo a prime number p ⩾ 3 and let \mathfrak a_χ:=(1-χ(-1))/2. Define the mean value
\begin{align*}
\mathcal{M}_{p}(s,\chi):=\frac{2}{p-1}\sum_{\substack{\psi \bmod p\\\psi(-1)=-1}}L(1,\psi)L(s,\chi\overline{\psi})
\end{align*}
for a complex number s such that s≠ 1 if \mathfrak a _χ=1.

Tuesday, October 8, 2019 — 2:30 PM EDT

Brett Nasserden, Department of Pure Mathematics, University of Waterloo

"Normal forms of dominant polynomial morphisms of the affine plane"

Wednesday, October 9, 2019 — 3:30 PM EDT

Kevin Hare, Department of Pure Mathematics, University of Waterloo

"Entropy of Self-similar Measures"

It is known that a self-similar measure is either purely singular or absolutely continuous.  Despite this, for most measures we cannot say which case we are in.  One technique that has proved promising is the study of the Garsia Entropy of the measure.  In this talk I will discuss the history, properties and recent results for self-similar measures and Garsia Entropy.

MC 5417

Thursday, October 10, 2019 — 11:00 to 11:00 AM EDT

Marco Handa, Department of Pure Mathematics, University of Waterloo

"NIP IV"

We begin section 2.2.1 of Simon's Guide to NIP theories.

MC 5413

Friday, October 11, 2019 — 1:30 PM EDT

Gabriel Islambouli, Deaprtment of Pure Mathematics, University of Waterloo

"Smooth 4-manifolds and the Pants Complex"

Tuesday, October 22, 2019 — 2:00 PM EDT

Luke MacLean, Department of Pure Mathematics, University of Waterloo

"REVERSE MATHEMATICS"

While most of mathematics is concerned with using a set of axioms to prove theorems, reverse mathematics is a relatively new form of mathematical logic that seeks to determine which axioms are required to prove certain theorems. This gives a notion of the “strength” of a certain theorem by looking at which theorems imply it, and which are implied by it.

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