Operator Algebra Seminars

Seminar information archive ~10/26Next seminarFuture seminars 10/27~

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

Seminar information archive

2020/11/05

16:45-18:15   Online
Zhengwei Liu (Tsinghua University)
Subfactors and Quantum Fourier Analysis (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/10/29

15:30-17:00   Online
Yoh Tanimoto (University of Rome, Tor Vergata)
Continuum (free) fields from lattice wavelet renormalization
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/10/22

16:45-18:15   Online
Hiroyasu Hamada (National Institute of Technology, Sasebo College)
$C^*$-algebras generated by multiplication operators and composition operators by functions with self-similar branches
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/10/15

16:45-18:15   Online
Sven Raum (Stockholm Univ.)
Structure of Hecke von Neumann algebras and applications to representation theory
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/10/08

16:45-18:15   Online
Narutaka Ozawa (RIMS, Kyoto Univ.)
An entropic proof of cutoff on Ramanujan graphs
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/10/01

16:45-18:15   Online
Norio Nawata (Osaka Univ.)
A characterization of the Razak-Jacelon algebra
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/07/16

16:45-18:15   Online
Christian Voigt (Univ. Glasgow)
Complex quantum groups and the Baum-Connes conjecture (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/07/09

16:45-18:15   Online
Amine Marrakchi (ENS Lyon)
Affine isometric actions of groups on $L_p$-spaces : dependence on the value of $p$ (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/07/02

16:45-18:15   Online
Toshihiko Masuda (Kyushu Univ.)
Outer actions ($\mathcal{G}$-kernels) of discrete amenable groupoids on injective factors (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/06/25

16:45-18:15   Online
Remi Boutonnet (Univ. Bordeaux)
Properly proximal groups and their von Neumann algebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/06/18

16:45-18:15   Online
Yoshimichi Ueda (Nagoya Univ.)
On Arveson's boundary theorem (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/06/11

16:45-18:15   Online
Makoto Yamashita (Univ. Oslo)
Homology and K-theory of torsion free ample groupoids and Smale spaces (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/06/04

16:45-18:15   Online
Yuhei Suzuki (Hokkaido Univ.)
Equivariant $O_2$-absorption theorem for exact groups

2020/05/28

16:45-18:15   Online
Yosuke Kubota (Shinshu Univ.)
Index theorem of lattice Wilson-Dirac operators and almost-commuting matrices (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/05/21

16:45-18:15   Online
Takuya Takeishi (Kyoto Institute of Technology)
Partition functions as $C^*$-dynamical invariants and actions of congruence monoids (English)

2020/05/14

16:45-18:15   Online
Yusuke Isono (RIMS, Kyoto Univ.)
Connes' bicentralizer problem for q-deformed Araki-Woods algebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/05/07

16:45-18:15   Online
Mayuko Yamashita (RIMS, Kyoto Univ.)
A new construction of deformation quantization for Lagrangian fiber bundles (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/04/30

16:45-18:15   Online
Felix Parraud (ENS Lyon)
Interpolation between random matrices and their free limit with the help of free stochastic processes (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/04/23

16:45-18:15   Online
Michiya Mori (Univ. Tokyo)
Lattice isomorphisms between projection lattices of von Neumann algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/04/16

16:45-18:15   Online
Cyril Houdayer (Univ. Paris-Sud)
Structure theorem for unitary representations of irreducible lattices in product groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm

2020/01/29

13:00-14:30   Room #002 (Graduate School of Math. Sci. Bldg.)
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.)
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.)
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.)
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.)
Pasquale Marra (Univ. Tokyo)
The Hofstadter model, fractality, and topology

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