Events - 2015

Friday, March 20, 2015 — 3:30 PM EDT

Safoura Jafar-Zadeh, University of Manitoba

“Isometric Isomorphisms of Beurling Algebras Associated with Locally Compact Groups”

Friday, March 20, 2015 — 3:30 PM EDT

 Alberto García-Raboso, University of Toronto

"A twisted nonabelian Hodge correspondence"

The classical nonabelian Hodge correspondence establishes an equivalence between certain categories of flat bundles and Higgs bundles on smooth projective varieties. I will describe an extension of this result to twisted vector bundles. No prior knowledge of the above topics will be assumed: come one, come all! There will be pancakes too.

Friday, March 20, 2015 — 2:30 PM EDT

Thomas Walpuski, MIT - Massachusetts Institute of Technology

“G2instantons over twisted connected sums”

Friday, March 20, 2015 — 1:00 PM EDT

Rahim Moosa, Department of Pure Mathematics, University of Waterloo

“Approximate Groups: VIII”

We continue to follow van den Dries Seminaire Bourbaki article entitled Approximate Groups [after Hrushovski, and Breuillard, Green, Tao]. The subject involves the interaction of additive combinatorics and model theory.

MC 5413

Wednesday, March 18, 2015 — 2:30 PM EDT

Jason Bell, Department of Pure Mathematics, University of Waterloo

“What is a noncommutative torus, II”

Tuesday, March 17, 2015 — 3:30 PM EDT

Michael Deveau, Department of Pure Mathematics, University of Waterloo

“(Weak) Konig’s Lemma over RCA0.”

Tuesday, March 17, 2015 — 2:30 PM EDT

Alexander Wires, Department of Pure Mathematics, University of Waterloo

“Cubing Finite Taylor Algebras”

I will provide the details showing how finite idempotent Taylor algebras can be character- ized by the hereditary existence of cubed elements. There is a corresponding notion of cube absorption which can be described as Few Subpowers and Absorption Theory in a blender. If there is time, I would like to pose a problem here.

Monday, March 16, 2015 — 1:30 PM EDT

Adam Dor On, Department of Pure Mathematics University of Waterloo

''Uniqueness theorems for graph algebras and applications”

This week we will discuss uniqueness of graph algebras up to the existence of a gauge circle action. We will then use this to prove that for graphs with no sources, the graph algebra of the graph is *-isomorphic to the graph algebra of the dual of that graph.

M3-2134

Friday, March 13, 2015 — 3:30 PM EDT

Alessandro Vignati, York University

“Amenable Operator Algebras and the Isomorphisms problem”

Friday, March 13, 2015 — 2:30 PM EDT

Long Li, McMaster University

“On the convexity of the Mabuchi energy functional along geodesics”

Friday, March 13, 2015 — 1:00 PM EDT

Rahim Moosa, Department of Pure Mathematics, University of Waterloo

“Approximate Groups: VII”

We continue to follow van den Dries Seminaire Bourbaki article entitled Approximate Groups [after Hrushovski, and Breuillard, Green, Tao]. The subject involves the interaction of additive combinatorics and model theory.

MC 5413

Wednesday, March 11, 2015 — 2:30 PM EDT

Jason Bell, Department of Pure Mathematics, University of Waterloo 

“What is a noncommutative torus?”

Tuesday, March 10, 2015 — 3:30 PM EDT

Mohammad Mahmoud, Department of Pure Mathematics, University of Waterloo

“Introduction to Reverse Mathematics (continued)”

We finish characterizing the ωmodelsofRCA0. If time helps, we continue doing the same for ACA0 If time permits, Michael Deveau will do the same for ACA_0.

MC 5413

Tuesday, March 10, 2015 — 2:30 PM EDT

Renzhi Song, Department of Pure Mathematics, University of Waterloo

“Barto’s NU Theorem (continued)”

Monday, March 9, 2015 — 4:00 PM EDT

Hubert Bray, Duke University

“The Geometry of the Universe”

Monday, March 9, 2015 — 1:30 PM EDT

Ehsaan Hossain, Department of Pure Mathematics, University of Waterloo

“Semisimple algebras and acyclic graphs”

Friday, March 6, 2015 — 3:30 PM EST

Nicholas Lai, University of Waterloo

“Linear Algebraic Groups, Part I”

Monday, January 26, 2015 — 4:00 PM EST

Hun Hee Lee, Seoul National University

“Weak amenability problem of Fourier algebras”

Friday, January 23, 2015 — 4:00 PM EST

Anton Mosunov, Department of Pure Mathematics University of Waterloo

"The tale of a little point on a sphere that factored a large integer"

Friday, January 23, 2015 — 2:30 PM EST

Boyu Li, Department of Pure Mathematics, University of Waterloo

“Regular representations of lattice ordered semigroups”

Friday, January 23, 2015 — 1:00 PM EST

Jason Bell, Department of Pure Mathematics, University of Waterloo

Wednesday, January 21, 2015 — 2:30 PM EST

Blake Madill, Department of Pure Mathematics, University of Waterloo

“On the Jacobson radical of differential polynomial rings. ”

Monday, January 19, 2015 — 4:00 PM EST

Eric Sawyer, McMaster University

“Corona problems - still open on the ball a half century after Carleson’s corona theorem in the unit disk.”

Monday, January 19, 2015 — 2:30 PM EST

Stanley Yao Xiao, Department of Pure Mathematics, University of Waterloo

“Binary quartic forms and average ranks of elliptic curves”

Friday, January 16, 2015 — 4:00 PM EST

Raymond Cheng, University of Waterloo

"Local theory of algebraic number fields"

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