Mathematics Department

# Upcoming Talks

This is a list of all upcoming talks for the next two weeks. Talks are from 3:45-4:45 p.m. in the Colloquium or Seminar Room, unless otherwise specified.

• Feb
26
• A combinatorial problem that produces interesting numbers
Michael Hoffman
USNA
Location: CH225
Time: 12:00 PM
Combinatorics, Algebra, & Topology Seminar

#### View Abstract

This past fall I blundered into a combinatorial problem, which led to interesting results on multiple zeta values and alternating multiple zeta values. It also led me to an interesting open question about the latter
• Feb
26
• On the rigidity of uniform Roe algebras of coarse spaces
Bruno de Mendonca Braga
York University
Time: 03:45 PM
Operator Algebras and Dynamics Seminars

#### View Abstract

(joint with Ilijas Farah) Given a coarse space $(X,\mathcal{E})$, one can define a $C^*$-algebra $C^*_u(X)$ called the uniform Roe algebra of $(X,\mathcal{E})$. It has been proved by J. \v{S}pakula and R. Willet that if the uniform Roe algebras of two uniformly locally finite metric spaces with property A are isomorphic, then the metric spaces are coarsely equivalent to each other. In this talk, we look at the problem of generalizing this result for general coarse spaces and on weakening the hypothesis of the spaces having property A.
• Mar
05
• MIDN 1/C Trevor Karn
USNA
Location: CH225
Time: 12:00 PM
Combinatorics, Algebra, & Topology Seminar