## Operator Algebra Seminars

Seminar information archive ～04/19｜Next seminar｜Future seminars 04/20～

Date, time & place | Wednesday 16:30 - 18:00 122Room #122 (Graduate School of Math. Sci. Bldg.) |
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**Seminar information archive**

### 2015/05/27

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

Vertex operator algebras in umbral Moonshine

**John F. R. Duncan**(Case Western Reserve Univ.)Vertex operator algebras in umbral Moonshine

### 2015/05/20

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

Unique prime factorization and bicentralizer problem for a class of type III factors

**Yusuke Isono**(RIMS, Kyoto Univ.)Unique prime factorization and bicentralizer problem for a class of type III factors

### 2015/05/13

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

Controlled topological phases and the bulk-edge correspondence for

topological insulators (English)

**Yosuke Kubota**(Univ. Tokyo)Controlled topological phases and the bulk-edge correspondence for

topological insulators (English)

### 2015/04/22

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

Construction of minimal skew products of amenable minimal dynamical systems

**Yuhei Suzuki**(Unvi. Tokyo)Construction of minimal skew products of amenable minimal dynamical systems

### 2015/04/15

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

On the tricategory of coordinate free conformal nets

(English)

**Juan Orendain**(UNAM/Univ. Tokyo)On the tricategory of coordinate free conformal nets

(English)

### 2015/04/08

16:45-18:15 Room #122 (Graduate School of Math. Sci. Bldg.)

On treeable equivalence relations arising from the Baumslag-Solitar groups

(English)

**Yoshikata Kida**(Univ. Tokyo)On treeable equivalence relations arising from the Baumslag-Solitar groups

(English)

### 2015/02/23

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Classification of (2+1)-TQFTs and its applications to physics and quantum computation (English)

**Zhenghan Wang**(Microsoft Research Station Q)Classification of (2+1)-TQFTs and its applications to physics and quantum computation (English)

### 2015/01/14

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Canonical cyclic group actions on noncommutative tori

**Zhuofeng He**(Univ. Tokyo)Canonical cyclic group actions on noncommutative tori

### 2015/01/07

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

De Finetti theorems related to Boolean independence (English)

**Tomohiro Hayase**(Univ. Tokyo)De Finetti theorems related to Boolean independence (English)

### 2014/12/17

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Dynamics of an Open Quantum System with Repeated Harmonic Perturbation (with Hiroshi Tamura) (English)

**Valentin Zagrebnov**(Univ. d'Aix-Marseille)Dynamics of an Open Quantum System with Repeated Harmonic Perturbation (with Hiroshi Tamura) (English)

### 2014/12/10

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Approximately inner flows on $C^*$-algebras (English)

**Akitaka Kishimoto**(Hokkaido Univ.)Approximately inner flows on $C^*$-algebras (English)

### 2014/12/03

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Central property (T) for $SU_q(2n+1)$

(English)

**Yuki Arano**(Univ. Tokyo)Central property (T) for $SU_q(2n+1)$

(English)

### 2014/11/26

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

A program to construct and study conformal field theories (ENGLISH)

**Yi-Zhi Huang**(Rutgers Univ.)A program to construct and study conformal field theories (ENGLISH)

### 2014/11/21

15:00-17:00 Room #126 (Graduate School of Math. Sci. Bldg.)

Introduction to Haagerup's bicentralizer paper (English)

**Reiji Tomatsu**(Hokkaido University)Introduction to Haagerup's bicentralizer paper (English)

### 2014/11/20

13:00-15:00 Room #128 (Graduate School of Math. Sci. Bldg.)

Introduction to Haagerup's bicentralizer paper (English)

**Reiji Tomatsu**(Hokkaido University)Introduction to Haagerup's bicentralizer paper (English)

### 2014/11/19

13:00-15:00 Room #126 (Graduate School of Math. Sci. Bldg.)

Introduction to Haagerup's bicentralizer paper (English)

**Reiji Tomatsu**(Hokkaido University)Introduction to Haagerup's bicentralizer paper (English)

### 2014/11/18

13:00-15:00 Room #126 (Graduate School of Math. Sci. Bldg.)

Introduction to Haagerup's bicentralizer paper (ENGLISH)

**Reiji Tomatsu**(Hokkaido University)Introduction to Haagerup's bicentralizer paper (ENGLISH)

### 2014/11/17

13:00-15:00 Room #126 (Graduate School of Math. Sci. Bldg.)

Introduction to Haagerup's bicentralizer paper (English)

**Reiji Tomatsu**(Hokkaido University)Introduction to Haagerup's bicentralizer paper (English)

### 2014/11/05

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

On the noncommutativity of the central sequence $C^*$-algebra $F(A)$ (ENGLISH)

**Hiroshi Ando**(Univ. Copenhagen)On the noncommutativity of the central sequence $C^*$-algebra $F(A)$ (ENGLISH)

### 2014/10/29

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

The classification of easy quantum groups (ENGLISH)

**Sven Raum**(RIMS, Kyoto Univ.)The classification of easy quantum groups (ENGLISH)

### 2014/10/22

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Free independence in ultraproduct von Neumann algebras and applications (ENGLISH)

**Yusuke Isono**(Kyoto Univ.)Free independence in ultraproduct von Neumann algebras and applications (ENGLISH)

### 2014/10/15

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Classification of actions of compact abelian groups on subfactors with index less than 4 (ENGLISH)

**Koichi Shimada**(Univ. Tokyo)Classification of actions of compact abelian groups on subfactors with index less than 4 (ENGLISH)

### 2014/10/08

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Realization of hyperbolic group $C^*$-algebras as decreasing intersection of Cuntz algebras $O_2$ (ENGLISH)

**Yuhei Suzuki**(Univ. Tokyo/RIMS, Kyoto Univ.)Realization of hyperbolic group $C^*$-algebras as decreasing intersection of Cuntz algebras $O_2$ (ENGLISH)

### 2014/10/02

16:30-18:00 Room #126 (Graduate School of Math. Sci. Bldg.)

Entropy and $L^2$-torsion (ENGLISH)

**Hanfeng Li**(SUNY Buffalo)Entropy and $L^2$-torsion (ENGLISH)

### 2014/10/01

16:30-18:00 Room #122 (Graduate School of Math. Sci. Bldg.)

Back-and-forth between scattering theory and index theorems (ENGLISH)

**Serge Richard**(Nagoya Univ.)Back-and-forth between scattering theory and index theorems (ENGLISH)