Dear Banach Space-natics,

I am sending this email to advertise the Online Operator Theory Seminar at the University of Virginia. Because of the current pandemic, our seminar is happening online on Zoom.

In case you would like to receive weekly emails with information about the seminar (including speaker, title, abstract and Zoom link), please send me an email to demendoncabraga@gmail.com.

With a few exceptions, the Operator Theory Seminar at UVA happens every Tuesday at 3:45 PM (US Eastern Standard Time). If the speaker agrees, the talks are recorded and posted on YouTube. Here is the link for our channel:

https://www.youtube.com/channel/UCtWmTsY1I0Te0aFw_gGqo-A

Our next seminar is on September 22nd (next Tuesday) at 4:00 PM (not at 3:45 PM as usual!). Our speaker is Javier Alejandro Chávez-Domínguez from University of Oklahoma and here are his title and abstract:

Title: Asymptotic dimension and coarse embeddings in the quantum setting

Abstract: We generalize the notions of asymptotic dimension and coarse embeddings from metric spaces to quantum metric spaces in the sense of Kuperberg and Weaver. We show that quantum asymptotic dimension behaves well with respect to metric quotients, direct sums, and quantum coarse embeddings. Moreover, we prove that a quantum metric space that equi-coarsely contains a sequence of reflexive quantum expanders must have infinite asymptotic dimension. This is done by proving a vertex-isoperimetric inequality for quantum expanders, based upon a previously known edge-isoperimetric one due to Temme, Kastoryano, Ruskai, Wolf, and Verstraete. Joint work with Andrew Swift.

You can access the talk at the following link:

https://virginia.zoom.us/j/94431300866?pwd=M1c2UU41R0lDemVvdDBWb1JvZytWUT09

I hope you all have a nice week.

Cheers, Braga