## 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

Tuesday, May 23, 2017 — 11:00 AM EDT

**Michael Deveau, Department of Pure Mathematics, University of Waterloo**

“Computable Functors and Effective Interpretability”

Tuesday, May 23, 2017 — 11:30 AM EDT

**Stephen Wen, Department of Pure Mathematics, University of Waterloo**

“Applications of the zeta function over function fields.”

Tuesday, May 23, 2017 — 2:30 PM EDT

**Anthony McCormick, Department of Pure Mathematics, University of Waterloo **

“The Spencer Complex Part 3”

Tuesday, May 23, 2017 — 3:30 PM EDT

**Vilmos Komornik, University of Strasbourg**

"Topological and fractal properties of non-integer base expansions"

Given a base $1<q\le 2$, following R\'enyi (1957) we consider expansions of the form

\begin{equation*}

x=\sum_{i=1}^{\infty}\frac{c_i}{q^i}

\end{equation*}

with digits $c_i$ belonging to $\{0,1\}$. In case $q=2$ of the familiar binary expansions every $x\in [0,1]$ has an expansion, and this is unique except the dyadic rational numbers that have two expansions.

Wednesday, May 24, 2017 — 5:00 PM EDT

**Ertan Elma, Department of Pure Mathematics, University of Waterloo **

“Brun’s Sieve, Part 2”

We will finish the proof of the main theorem of Brun’s sieve (section 6.2 of the book An Introduction to Sieve Methods and Their Applications, by R. Murty, C. Cojocaru).

MC 5403

Thursday, May 25, 2017 — 2:30 PM EDT

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

“A new construction of compact G2 manifolds by glueing Eguchi-Hanson spaces, Part III: Fibrewise blow-up by a family of Eguchi-Hanson spaces”

Friday, May 26, 2017 — 1:30 PM EDT

**Trevor Gunn, Department of Pure Mathematics, University of Waterloo **

“Hyperfields for Tropical Geometry”

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