Swampland constraints on the symmetry topological field theory of supergravity
Gould, D Lin, L Sabag, E Physical Review D volume 109 issue 12 126005 (15 Jun 2024)

Do you want to meet other MPLS and MSD postdocs over free pizza? Then sign up for the Radcliffe Science Library Pizza Lunch. This is a great opportunity to meet and chat with fellow postdocs over a free lunch.

Date: Thursday 27 June

Time: 13.00-14.00

Book

Drop impact onto immiscible liquid films floating on pools
Castrejón-Pita, A Fudge, B Cimpeanu, R Scientific Reports
Decay and Fission of Magnetic Quivers.
Bourget, A Sperling, M Zhong, Z Physical review letters volume 132 issue 22 221603 (31 May 2024)

 

This newly created role presents an exciting opportunity to join the Mathematical Institute, a thriving academic department with an outstanding reputation for its teaching and research.  As Finance Officer, you will be responsible for leading the Accounts Payable, Expenses and Receivable functions of the department, including the management of two Finance Assistants.  You will report to the Senior Finance Officer.

This is a version of an aria from 17th and 18th century composer Alessandro Scarlatti's opera 'Il Pompeo' by Nora Fischer & guitarist Marnix Dorrestein, taken from Nora's 2018 album.  

'O cessate di piagarmi, o lasciatemi morir (wound me no more, leave me to die)'

Fri, 28 Jun 2024

15:00 - 16:00
C1

Permanence of Structural properties when taking crossed products

Dawn Archey
(University of Detroit Mercy)
Abstract

 Structural properties of C*-Algebras such as Stable Rank One, Real Rank Zero, and radius of comparison have played an important role in classification.  Crossed product C*-Algebras are useful examples to study because knowledge of the base Algebra can be leveraged to determine properties of the crossed product.  In this talk we will discuss the permanence of various structural properties when taking crossed products of several types.  Crossed products considered will include the usual C* crossed product by a group action along with generalizations such as crossed products by a partial automorphism.  

This talk is based on joint work with Julian Buck and N. Christopher Phillips and on joint work with Maria Stella Adamo, Marzieh Forough, Magdalena Georgescu, Ja A Jeong, Karen Strung, and Maria Grazia Viola.

Thu, 27 Jun 2024

16:30 - 17:30
C1

The Zappa–Szép product of groupoid twists

Anna Duwenig
(KU Leuven)
Abstract

The Zappa–Szép (ZS) product of two groupoids is a generalization of the semi-direct product: instead of encoding one groupoid action by homomorphisms, the ZS product groupoid encodes two (non-homomorphic, but “compatible”) actions of the groupoids on each other. I will show how to construct the ZS product of two twists over such groupoidand give an example using Weyl twists from Cartan pairs arising from Kumjian--Renault theory.

 Based on joint work with Boyu Li, New Mexico State University

Mon, 24 Jun 2024

15:00 - 16:00
C1

Self-similar k-graph C*-algebras

Dilian Yang
(University of Windsor)
Abstract

A self-similar k-graph is a pair consisting of a (discrete countable) group and a k-graph, such that the group acts on the k-graph self-similarly. For such a pair, one can associate it with a universal C*-algebra, called the self-similar k-graph C*-algebra. This class of C*-algebras embraces many important and interesting C*-algebras,  such as the higher rank graph C*-algebras of Kumjian-Pask, the Katsura algebras,  the Nekrashevych algebras constructed from self-similar groups, and the Exel-Pardo algebra. 

In this talk, we will survey some results on self-similar k-graph C*-algebras. 

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