## Operator Algebra Seminars

Seminar information archive ～06/23｜Next seminar｜Future seminars 06/24～

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

### 2016/07/22

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Radius of comparison for $C^*$ crossed products by free minimal actions of amenable groups

**N. Christopher Phillips**(Univ. Oregon)Radius of comparison for $C^*$ crossed products by free minimal actions of amenable groups

### 2016/07/11

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Fraïssé Theory and Jiang-Su algebra

**Shuhei Masumoto**(Univ. Tokyo)Fraïssé Theory and Jiang-Su algebra

### 2016/06/20

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Bi-exact groups, strongly ergodic actions and group measure space type III factors with no central sequence

**Yusuke Isono**(RIMS, Kyoto Univ.)Bi-exact groups, strongly ergodic actions and group measure space type III factors with no central sequence

### 2016/06/13

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Lattices models for topological orders and boundary-bulk duality

**Liang Kong**(Univ. New Hampshire/Harvard Univ.)Lattices models for topological orders and boundary-bulk duality

### 2016/06/06

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Minimal ambient nuclear $C^*$-algebras

**Yuhei Suzuki**(Chiba Univ.)Minimal ambient nuclear $C^*$-algebras

### 2016/05/30

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

TBA

**Yosuke Kubota**(Univ. Tokyo)TBA

### 2016/05/09

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Surgery theory and discrete groups (English)

**Mikael Pichot**(McGill Univ./Univ．Tokyo)Surgery theory and discrete groups (English)

### 2016/04/25

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Graded twisting of quantum groups, actions, and categories

**Makoto Yamashita**(Ochanomizu Univ.)Graded twisting of quantum groups, actions, and categories

### 2016/04/18

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

On the functoriality of Haagerup's $L^2$-space construction: Verticalizing decorated 2-categories

**Juan Orendain**(UNAM/Univ. Tokyo)On the functoriality of Haagerup's $L^2$-space construction: Verticalizing decorated 2-categories

### 2016/04/11

16:４５-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

On analytic construction of the group three-cocycles (English)

**Ryszard Nest**(Univ. Copenhagen)On analytic construction of the group three-cocycles (English)

### 2016/03/11

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Convergence to the boundary for random walks on discrete quantum groups

(English)

**Bas Jordans**(Univ. Oslo)Convergence to the boundary for random walks on discrete quantum groups

(English)

### 2016/03/08

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Equilibrium and non-equilibrium states in Conformal Field Theory (英語)

**Roberto Longo**(Univ. Rome "Tor Vergata")Equilibrium and non-equilibrium states in Conformal Field Theory (英語)

### 2016/01/22

15:00-17:00 Room #118 (Graduate School of Math. Sci. Bldg.)

Introduction to $C^*$-tensor categories

**Reiji Tomatsu**(Hokkaido Univ.)Introduction to $C^*$-tensor categories

### 2016/01/21

15:00-17:00 Room #118 (Graduate School of Math. Sci. Bldg.)

Introduction to $C^*$-tensor categories

**Reiji Tomatsu**(Hokkaido Univ.)Introduction to $C^*$-tensor categories

### 2016/01/20

15:00-17:00 Room #118 (Graduate School of Math. Sci. Bldg.)

Introduction to $C^*$-tensor categories

**Reiji Tomatsu**(Hokkaido Univ.)Introduction to $C^*$-tensor categories

### 2016/01/19

**Reiji Tomatsu**(Hokkaido Univ.)

Introduction to $C^*$-tensor categories

### 2016/01/18

15:00-17:00 Room #118 (Graduate School of Math. Sci. Bldg.)

Introduction to $C^*$-tensor categories (日本語)

**Reiji Tomatsu**(Hokkaido Univ.)Introduction to $C^*$-tensor categories (日本語)

### 2016/01/13

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

A Stabilization Theorem for Fell Bundles over Groupoids

**Alexander Kumjian**(Univ. Nevada, Reno)A Stabilization Theorem for Fell Bundles over Groupoids

### 2016/01/06

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Quantum channels from the free orthogonal quantum group (English)

**Benoit Collins**(Kyoto Univ.)Quantum channels from the free orthogonal quantum group (English)

### 2015/12/16

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Nuclearity in AQFT and related results

**Yul Otani**(Univ. Tokyo)Nuclearity in AQFT and related results

### 2015/12/09

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

K-theory in subfactors and conformal field theory

**David E. Evans**(Cardiff Univ.)K-theory in subfactors and conformal field theory

### 2015/12/02

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Drinfeld center and representation theory for monoidal categories

**Makoto Yamashita**(Ochanomizu Univ.)Drinfeld center and representation theory for monoidal categories

### 2015/11/25

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Combining Pseudodifferential and Vector Bundle Techniques, and Their Applications to Topological Insulators

**Max Lein**(AIMR, Tohoku Univ.)Combining Pseudodifferential and Vector Bundle Techniques, and Their Applications to Topological Insulators

### 2015/10/28

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Uniformly locally finite metric spaces and Folner type conditions

**Hiroki Sako**(Niigata University)Uniformly locally finite metric spaces and Folner type conditions

### 2015/10/14

16:45-18:15 Room #118 (Graduate School of Math. Sci. Bldg.)

Fraisse Theory for Metric Structures (English)

**Shuhei Masumoto**(Univ. Tokyo)Fraisse Theory for Metric Structures (English)