## Operator Algebra Seminars

Seminar information archive ～02/17｜Next seminar｜Future seminars 02/18～

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

### 2020/01/29

13:00-14:30 Room #002 (Graduate School of Math. Sci. Bldg.)

Horn's problem, polytope volumes and tensor product decompositions (English)

**Colin McSwiggen**(Brown Univ.)Horn's problem, polytope volumes and tensor product decompositions (English)

### 2020/01/29

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Stationary actions of higher rank lattices on von Neumann algebras (English)

**Cyril Houdayer**(Univ. Paris-Sud)Stationary actions of higher rank lattices on von Neumann algebras (English)

### 2019/12/26

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

Categorical quantization of symmetric spaces and reflection equation

**Makoto Yamashita**(Oslo Univ.)Categorical quantization of symmetric spaces and reflection equation

### 2019/12/25

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Connes fusion on the unit circle

(English)

**Bin Gui**(Rutgers Univ.)Connes fusion on the unit circle

(English)

### 2019/12/18

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

The Hofstadter model, fractality, and topology

**Pasquale Marra**(Univ. Tokyo)The Hofstadter model, fractality, and topology

### 2019/12/10

17:00-18:30 Room #122 (Graduate School of Math. Sci. Bldg.)

On gauging symmetries of topological phases of matter (English)

**Zhenghan Wang**(Microsoft Station Q)On gauging symmetries of topological phases of matter (English)

### 2019/12/04

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

An infinite-dimensional index theory and the Higson-Kasparov-Trout algebra

**Doman Takata**(Univ. Tokyo)An infinite-dimensional index theory and the Higson-Kasparov-Trout algebra

### 2019/11/29

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

**Reiji Tomatsu**(Hokkaido Univ.)### 2019/11/28

15:00-17:00 Room #117 (Graduate School of Math. Sci. Bldg.)

**Reiji Tomatsu**(Hokkaido Univ.)### 2019/11/27

17:15-18:45 Room #126 (Graduate School of Math. Sci. Bldg.)

The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras

**Taro Sogabe**(Kyoto University)The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras

### 2019/11/27

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

(日本語)

**Reiji Tomatsu**(Hokkaido Univ.)(日本語)

### 2019/11/26

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

(日本語)

**Reiji Tomatsu**(Hokkaido Univ.)(日本語)

### 2019/11/25

15:00-17:00 Room #128 (Graduate School of Math. Sci. Bldg.)

(日本語)

**Reiji Tomatsu**(Hokkaido Univ.)(日本語)

### 2019/11/20

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Modular theory and entanglement in CFT

**Stefan Hollands**(Univ. Leipzig)Modular theory and entanglement in CFT

### 2019/11/06

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Deformation of two-dimensional conformal field theory and vertex algebra

**Yuto Moriwaki**(Univ. Tokyo)Deformation of two-dimensional conformal field theory and vertex algebra

### 2019/10/16

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Developments in conformal bootstrap analysis

**Shinobu Hikami**(OIST)Developments in conformal bootstrap analysis

### 2019/10/09

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Relative K-homology group of $C^*$-algebras and almost flat vector bundle on manifolds with boundary

**Yosuke Kubota**(Riken)Relative K-homology group of $C^*$-algebras and almost flat vector bundle on manifolds with boundary

### 2019/10/02

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Subfactors, K-theory and Equivariant Higher Twists (English)

**David E. Evans**(Cardiff University)Subfactors, K-theory and Equivariant Higher Twists (English)

### 2019/07/25

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

The classification of well behaved simple C*-algebras

**George Elliott**(Univ. Toronto)The classification of well behaved simple C*-algebras

### 2019/07/10

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Convergence theorems on multi-dimensional homogeneous quantum walks

**Hiroki Sako**(Niigata University)Convergence theorems on multi-dimensional homogeneous quantum walks

### 2019/07/03

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Tensor product decompositions and rigidity of full factors

**Amine Marrakchi**(RIMS, Kyoto University)Tensor product decompositions and rigidity of full factors

### 2019/06/26

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

### 2019/06/19

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Type classification of extreme quantized characters

**Ryosuke Sato**(Nagoya University)Type classification of extreme quantized characters

### 2019/05/15

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Combinatorial aspects of Borel functions

**Takayuki Kihara**(Nagoya University)Combinatorial aspects of Borel functions

### 2019/05/08

16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)

Unitary conjugacy for type III subfactors and W*-superrigidity

**Yusuke Isono**(RIMS, Kyoto University)Unitary conjugacy for type III subfactors and W*-superrigidity