Events for 10/30/2019 from all calendars

Student Working Seminar in Groups and Dynamics

Time: 1:00PM - 2:00PM

Location: BLOC 628

Speaker: Amanda Hoisington

Title: Coarse embeddings under group extensions II

Abstract: I will be going over a paper by Arzhantseva and Tessera (2017) which proves, by construction, that admitting a coarse embedding into Hilbert space is not preserved under group extension.

Noncommutative Geometry Seminar

Time: 2:00PM - 3:00PM

Location: BLOC 628

Speaker: Quanlei Fang, The City University of New York

Title: Revisiting Arveson’s Dirac operator of a commuting tuple

Abstract: About twenty years ago, Arveson introduced an abstract Dirac operator based on Taylor spectrum and functional calculus. He showed that every Dirac operator is associated with a commuting tuple. The Dirac operator of a commuting tuple has inspired several interesting problems in multivariable operator theory. In this talk, we will revisit the Dirac operator and discuss some related problems.

Graduate Student Organization Seminar

Time: 4:00PM - 5:00PM

Location: BLOC 628

Speaker: Jintao Deng

Title: Some concepts in Coarse Geometry

Abstract: Coarse geometry is a subject to study metric spaces at large scale. In this talk, I will talk about some basic concepts in coarse geometry. I will also talk about some invariants under coarse equivalences between metric spaces.