Events

Upcoming

Time and place: Nov. 4, 2019 9:00 AMNov. 6, 2019 6:00 PM, Blindern

During the past 25 years there has been a significant activity constructing and analyzing C*-algebras and C*-algebraic dynamical systems from semigroups of number theoretic origin. Among these are the semigroup C*-algebras of the affine semigroup of the ring of algebraic integers in a number field, which are closely related to the Bost-Connes systems giving a thermodynamic interpretation of the Riemann and Dirichlet zeta-functions. The K-theory of the associated boundary quotients has been computed and also the phase transition of equilibrium states at low temperature has been exhibited via a natural parametrization. There is an intriguing, and still not understood, parallel in that the same C*-algebra lies at the heart of the solution of both problems. The goal of the master class is to introduce the participants to these and related topics lying at the intersection of several branches of mathematics.

 

The master class is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Previous

Time and place: Oct. 2, 2019 2:15 PM3:15 PM, NHA 720

Nathan Brownlowe (The University of Sydney, Australia) will give a talk titled: Reconstructing directed graphs from their Toeplitz algebras.

Time and place: Sep. 4, 2019 2:15 PM3:15 PM, NHA 723

Kenny De Commer (Vrije Universiteit Brussel, Belgium) will give a talk titled: Spectral *-algebras and quantum group actions

Time and place: Aug. 21, 2019 2:15 PM3:15 PM, NHA 107

Petter Nyland (NTNU) will give a talk titled: Matui’s Conjectures for Étale Groupoids.

Time: July 29, 2019Aug. 9, 2019

Summer school and workshop at University of Oslo

Time and place: June 14, 2019 10:15 AM12:00 PM, Room 108, N.H. Abel's Building, UiO

 

This lecture is the fifth and last of a mini-course given by Professor John Quigg (Arizona State University, Tempe, USA), one of the world leading experts on the topic of C*-dynamical systems.

This course is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Time and place: June 13, 2019 10:15 AM12:00 PM, Room 108, N.H. Abel's Building, UiO

 

This lecture is the fourth of a mini-course consisting of five lectures given by Professor John Quigg (Arizona State University, Tempe, USA), one of the world leading experts on the topic of C*-dynamical systems.

This course is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Time and place: June 11, 2019 10:15 AM12:00 PM, Room 108, N.H. Abel's Building, UiO

 

This lecture is the third of a mini-course consisting of five lectures given by Professor John Quigg (Arizona State University, Tempe, USA), one of the world leading experts on the topic of C*-dynamical systems.

This course is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Time and place: June 7, 2019 10:15 AM12:00 PM, Room 108, N.H. Abel's Building, UiO

 

This lecture is the second of a mini-course consisting of five lectures given by Professor John Quigg (Arizona State University, Tempe, USA), one of the world leading experts on the topic of C*-dynamical systems.

This course is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Image may contain: Forehead, Chin, Glasses.
Time and place: June 4, 2019 1:15 PM3:00 PM, Room 108, N.H. Abel's Building, UiO

 

This lecture is the first of a mini-course consisting of five lectures given by Professor John Quigg (Arizona State University, Tempe, USA), one of the world leading experts on the topic of C*-dynamical systems.

This course is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Trond Mohn Foundation.  

Time and place: May 29, 2019 11:00 AM12:00 PM, NHA 723

Andrey Mudrov (University of Leicester, United Kingdom) will give a talk titled: Pseudo-parabolic categories over HPqn

Time and place: May 23, 2019 2:15 PM4:00 PM, NHA 723

Franz Fuchs (SINTEF) will give a talk with title: 

Quantum Computing and Quantum Supremacy

Time and place: May 22, 2019 9:00 AM9:45 AM, Vilhelm Bjerknes' House, Aud. 4

This is the third and last lecture by Anders C. Hansen (Cambridge Univ. and UiO) on this topic. Vegard Antun (UiO) will also contribute to the lecture.

Time and place: May 21, 2019 10:15 AM12:00 PM, Vilhelm Bjerknes' House, Aud. 4

This is the second in a series of three lectures by Anders C. Hansen (Cambridge Univ. and UiO) on this topic. Vegard Antun (UiO) will also contribute to the lectures.

Time and place: May 20, 2019 2:15 PM4:00 PM, Vilhelm Bjerknes' House, Aud. 4

This is the first in a series of three lectures by Anders C. Hansen (Cambridge Univ. and UiO) on this topic. Vegard Antun (UiO) will also contribute to the lectures.

Time and place: May 15, 2019 11:00 AM12:00 PM, NHA 723

Ulrik Enstad (University of Oslo) will give a talk titled: Heisenberg modules and the existence (or lack thereof) of Gabor frames

Time and place: May 8, 2019 11:00 AM12:00 PM, NHA 108

Seung-Hyeok Kye (Seoul National University, Korea) will give a talk titled: Indecomposable exposed multi-linear maps and separable states with unique decomposition.

Time and place: Apr. 24, 2019 11:00 AM12:00 PM, NHA 723

Roberto Conti (Sapienza University of Rome, Italy) will give a talk titled: Endomorphisms of simple C*-algebras generated by isometries.

Time and place: Mar. 27, 2019 11:00 AM12:00 PM, NHA 723

Sanaz Pooya (Stockholm), Sweden, will give a talk titled: On the Baum–Connes assembly map for certain semi-direct products.

Time and place: Mar. 27, 2019 10:00 AM11:00 AM, NHA 723

Sven Raum (Stockholm), Sweden, will give a talk with title: C*-superrigidity of 2-step nilpotent groups

Time and place: Feb. 13, 2019 11:00 AM12:00 PM, B723

Camila Fabre Sehnem (Florianopolis), Brasil, will give a talk with title :

On $C^*$-algebras associated to product systems

 

 

Time and place: Jan. 7, 2019 10:00 AMJan. 11, 2019 4:00 PM, Room 108, N.H. Abel's Building, UiO

Connes' embedding problem is one of the long standing open problems in Operator Algebras. Since it was raised in 1976, several equivalent formulations, seemingly unrelated to it, have been found, also in other areas of mathematics. In particular, it is equivalent to the (weak) Tsirelson problem in Quantum Information Theory

The aim of the winter school is to upgrade the knowledge of all operator algebraists at NTNU and UiO, in particular master and PhD students, on these important topics and to review some of the recent developments.  

The school is a part of the project "Pure Mathematics in Norway, 2018-2022", supported by the Bergen Research Foundation and the Tromsø Research Foundation.    

 

Time and place: Dec. 12, 2018 12:30 PM1:30 PM, Room 723, NH Abels Hus

An abstract of the talk is available here.

Time and place: Nov. 28, 2018 11:00 AM12:00 PM, NHA Room 108
Time and place: Nov. 28, 2018 10:00 AM11:00 AM, NHA 108