Events

Adam Dor On, Department of Pure Mathematics, University of Waterloo

“Classification of C*-envelopes of tensor algebras arising from stochastic matrices”

In this talk we will discuss C*-envelopes of tensor algebras associated to finite irreducible stochastic matrices. We show that there are examples of such C*-envelopes that are non- *-isomorphic to either the Toeplitz or t he Cuntz-Pimsner algebras, which was somewhat unexpected.

Gregorio Arturo Reyes Gonzalez, Instituto Tecnologico y de Estudios Superiores de Monterrey

Visiting the Department of Pure Mathematics, University of Waterloo

“Different definitions for Tangent Vectors”

Anton Mosunov, Department of Pure Mathematics, University of Waterloo

“ESTIMATING THE NUMBER OF SOLUTIONS OF A THUE EQUATION: FURTHER ADVANCEMENTS”

Jonathan Stephenson, Department of Pure Mathematics, University of Waterloo

“The Decanter Method (III)”

Last week we saw how to prove that a K-trivial real cannot be Turing complete, but we made several simplifying assumptions that set constants equal to zero.

This week, we will show how to modify the construction we used to make it work when the constants are allowed to take on arbitrary values.

Adam Jaffe, Department of Pure Mathematics, University of Waterloo

“Bipartite graphs admitting a k-NU polymorphism Part 3”

Spiro Karigiannis, Department of Pure Mathematics, University of Waterloo

“Conformal Normal Coordinates and Graham’s Theorem”

We will complete our discussion of Section 5 of the Lee/Parker paper on the Yamabe problem, including the proof of the Theorem of Robin Graham on the existence of conformal normal coordinates.

MC 5501

Shubham Dwivedi, Department of Pure Mathematics, University of Waterloo

“Conformal Normal Coordinates”

We will prove the existence of conformal normal coordinates on a Riemannian manifold M and will show how that simplifies the local geometry on M more than the geodesic normal coordinates. We will also give important applications of conformal normal coordinates to the solution of the Yamabe problem.

MC 5403

Spiro Karigiannis,Department of Pure Mathematics, University of Waterloo

“One more time for conformal normal coordinates”

Michael Deveau, Department of Pure Mathematics, University of Waterloo

“The Golden Run Construction - Part 1”

Ross Willard, Department of Pure Mathematics, University of Waterloo

“Conservative constraints Part 4”

This is the 4th in a series of 6 lectures aiming to make sense of Andrei Bulatovs paper, Conservative constraint satisfaction re-revisited, J. Comput. Sys. Sci. 82 (2016), 347-356. This week: fixing the bugs in Lemma 3.5.

M3-3103