## 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

Friday, July 27, 2018 — 2:30 PM EDT

**Tobias Fritz, Max Planck Institute for Mathematics in the Sciences and the Perimeter Institute**

"Hypergraph C*-algebras"

Friday, July 27, 2018 — 1:00 PM EDT

**Nickolas Rollick, Pure Mathematics, University of Waterloo**

"A Proper Separation -- The Variety Show"

Well, it has only taken two years, but we are finally ready to give the scheme-theoretic definition of "variety". Along the way, we discuss the notions algebraic geometers use in place of "Hausdorff" and "compact Hausdorff", namely "separated" and "proper" morphisms. Somehow, it seems fitting to talk about "separation" as we bring this seminar to a close...

Thursday, July 26, 2018 — 4:30 PM EDT

**Dan Ursu, Pure Mathematics, University of Waterloo**

"C*-simplicity of discrete groups"

Thursday, July 26, 2018 — 3:30 PM EDT

**Jeremy Nicholson, Pure Mathematics, University of Waterloo**

"The Frobenius Problem and Combinatorics on Words"

Thursday, July 19, 2018 — 1:30 PM EDT

**Adam Humeniuk, Pure Mathematics, University of Waterloo**

"Existence of the C*-envelope"

In 1969, Arveson defined the C*-envelope of an operator algebra or operator system as a universal quotient amongst all C*-algebras which contain it. He left the existence of the C*-envelope as an open problem. In a whirlwind tour of my Master's research paper, I'll discuss the diverse tools used to prove its existence in the intervening decades.

Wednesday, July 18, 2018 — 1:30 PM EDT

**Boyu Li, Pure Mathematics, University of Waterloo**

"Regular Dilation on Semigroups"

Tuesday, July 17, 2018 — 3:00 PM EDT

**Justin Toth, Combinatorics and Optimization**

"Using Linear Algebra to do Matching Theory"

Tuesday, July 17, 2018 — 1:30 PM EDT

**Satish Pandey, Pure Mathematics, University of Waterloo**

"Symmetrically-Normed Ideals and Characterizations of Absolutely Norming Operators"

Monday, July 16, 2018 — 12:00 PM EDT

**Jitendra Prakash, Pure Mathematics, University of Waterloo**

"Tsirelson's problems and entanglement breaking rank"

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