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
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Luke MacLean, Department of Pure Mathematics, University of Waterloo
"Reverse Mathematics"
We say that $S \subseteq \mathcal{P}(\omega)$ is an $\omega$model of a subsystem of second order arithmetic if the $L_2$ structure $(\omega, S, +, \cdot, 0, 1, <)$ correctly models the subsystem in question. The goal of this lecture will be to prove that there is an $\omega$model of $WKL_0$ consisting entirely of low sets.
This will involve learning about PA degrees and the low basis theorem.
All are welcome.
MC 5413
Andrej Vukovic, Department of Pure Mathematics, University of Waterloo
We continue where last week's discussion left off by discussing the classification of semivaluations in the valuative tree. Then we return to our study of plane polynomial dynamics.
M3 3103
Alexandru Nica, Department of Pure Mathematics, University of Waterloo
"Free probabilistic aspects of meandric systems"
Wilson Poulter, Department of Pure Mathematics, University of Waterloo
"NIP VI"
We finish section 2.2.2 of Simon's Guide to NIP theories and move on to 2.2.3.
MC 5413
Arpita Kar, Queen's University
"Some reflections on the Riemann Hypothesis"
Dino Rossegger, Department of Pure Mathematics, University of Waterloo
"Determinacy in second order arithmetic"
Daniel Le, University of Toronto
"Congruences between modular forms"
Boyu Li, University of Victoria
"Amenable and Nonamenable Semigroups"
Since Nica introduced the notion of amenability of quasilattice ordered semigroups, the amenability for many classes of semigroups remain unanswered. We will give a brief overview of semigroup amenability, and show some recent developments on this topic using dilation theory. In particular, we shall show that Artin monoids are nonamenable except the class of rightangled. This is a joint work with Marcelo Laca.
MC 5417
Dan Ursu, Pure Math Department, University of Waterloo
"Relative C*Simplicity"
Henry Yuen, University of Toronto
"Connes’ Embedding Problem through the lens of complexity theory"
Departmental office: MC 5304
Phone: 519 888 4567 x33484
Fax: 519 725 0160
Email: puremath@uwaterloo.ca