Upcoming Talks
This is a list of all upcoming talks for the next two weeks. Talks are from 3:454:45 p.m. in the Colloquium or Seminar Room, unless otherwise specified.

Feb26

A combinatorial problem that produces interesting numbersMichael HoffmanUSNALocation: CH225Time: 12:00 PMCombinatorics, 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

Feb26

On the rigidity of uniform Roe algebras of coarse spacesBruno de Mendonca BragaYork UniversityTime: 03:45 PMOperator 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.

Mar05

MIDN 1/C Trevor KarnUSNALocation: CH225Time: 12:00 PMCombinatorics, Algebra, & Topology Seminar