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Operator Algebra Seminars
Seminar information archive ～09/23｜Next seminar｜Future seminars 09/24～
| Date, time & place | Wednesday 16:30 - 18:00 122Room #122 (Graduate School of Math. Sci. Bldg.) |
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Seminar information archive
2023/07/31
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Roberto Longo (Univ. Rome, ”Tor Vergata”)
Operator Algebras and Quantum Field Theory: introductory elements
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Roberto Longo (Univ. Rome, ”Tor Vergata”)
Operator Algebras and Quantum Field Theory: introductory elements
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/06/13
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Kan Kitamura (Univ. Tokyo)
Around homogeneous spaces of complex semisimple quantum groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Kan Kitamura (Univ. Tokyo)
Around homogeneous spaces of complex semisimple quantum groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/06/06
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Maria Stella Adamo (Univ. Tokyo)
Wightman fields and their construction for a class of 2D CFTs
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Maria Stella Adamo (Univ. Tokyo)
Wightman fields and their construction for a class of 2D CFTs
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/05/23
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Hidenori Fukaya (Osaka University)
Magnetic monopole and domain-wall fermion Dirac operator (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Hidenori Fukaya (Osaka University)
Magnetic monopole and domain-wall fermion Dirac operator (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/05/16
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Mizuki Oikawa (Univ. Tokyo)
Group actions on bimodules and equivariant $\alpha$-induction
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Mizuki Oikawa (Univ. Tokyo)
Group actions on bimodules and equivariant $\alpha$-induction
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/05/09
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Yoh Tanimoto (Univ Rome, Tor Vergata)
Lattice Green functions (after Balaban/Dimock) (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Yoh Tanimoto (Univ Rome, Tor Vergata)
Lattice Green functions (after Balaban/Dimock) (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/05/02
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Ayoub Hafid (Univ. Tokyo)
KK-theory, localization algebras, and approximation
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Ayoub Hafid (Univ. Tokyo)
KK-theory, localization algebras, and approximation
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/05/02
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Ayoub Hafid (Univ. Tokyo)
KK-theory, localization algebras, and approximation
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Ayoub Hafid (Univ. Tokyo)
KK-theory, localization algebras, and approximation
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/04/18
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Naoki Genra (Univ. Tokyo)
Representation theory of subregular W-algebras and principal W-superalgebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Naoki Genra (Univ. Tokyo)
Representation theory of subregular W-algebras and principal W-superalgebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/04/18
16:45-18:15 Room #126 (Graduate School of Math. Sci. Bldg.)
Naoki Genra (Univ. Tokyo)
Representation theory of subregular W-algebras and principal W-superalgebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Naoki Genra (Univ. Tokyo)
Representation theory of subregular W-algebras and principal W-superalgebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2023/03/08
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Ricardo Correa da Silva (Friedrich-Alexander-Universität Erlangen-Nürnberg)
Structure and Inclusions of Twisted Araki-Woods Algebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Ricardo Correa da Silva (Friedrich-Alexander-Universität Erlangen-Nürnberg)
Structure and Inclusions of Twisted Araki-Woods Algebras (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/12/20
16:45-18:15 Online
Yosuke Kubota (Shinshu Univ.)
Band width and the Rosenberg index
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Yosuke Kubota (Shinshu Univ.)
Band width and the Rosenberg index
[ Abstract ]
Band width is a concept recently proposed by Gromov. It is based on the idea that when a certain band (i.e., manifold with two boundaries) is openly immersed to a target manifold M with positive scalar curvature metric, then its width is bounded by a uniform constant called the band width of M. A qualitative consequence is that infiniteness of the band width of M obstructs to positive scalar curvature.
In this talk, infiniteness of a version of the band width, Zeidler's KO-band width, is dominated as a PSC obstruction by an existing obstruction, the Rosenberg index. This answers to a conjecture by Zeidler.
[ Reference URL ]Band width is a concept recently proposed by Gromov. It is based on the idea that when a certain band (i.e., manifold with two boundaries) is openly immersed to a target manifold M with positive scalar curvature metric, then its width is bounded by a uniform constant called the band width of M. A qualitative consequence is that infiniteness of the band width of M obstructs to positive scalar curvature.
In this talk, infiniteness of a version of the band width, Zeidler's KO-band width, is dominated as a PSC obstruction by an existing obstruction, the Rosenberg index. This answers to a conjecture by Zeidler.
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/12/13
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Feng Xu (UC Riverside)
Entropy in QFT
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Feng Xu (UC Riverside)
Entropy in QFT
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/12/06
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Mao Hoshino (Univ. Tokyo)
Equivariant covering spaces of quantum homogeneous spaces
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Mao Hoshino (Univ. Tokyo)
Equivariant covering spaces of quantum homogeneous spaces
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/11/29
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Yuki Arano (Kyoto Univ.)
Actions of tensor categories on $C^*$-algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Yuki Arano (Kyoto Univ.)
Actions of tensor categories on $C^*$-algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/11/22
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Ryosuke Sato (Chuo Univ.)
Multiplicative characters and Gaussian fluctuation limits
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Ryosuke Sato (Chuo Univ.)
Multiplicative characters and Gaussian fluctuation limits
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/11/15
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Michiya Mori (Univ. Tokyo)
Ring isomorphisms of locally measurable operator algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Michiya Mori (Univ. Tokyo)
Ring isomorphisms of locally measurable operator algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/11/08
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Ryoya Arimoto (RIMS, Kyoto Univ.)
On the type of the von Neumann algebra of an open subgroup of the Neretin group
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Ryoya Arimoto (RIMS, Kyoto Univ.)
On the type of the von Neumann algebra of an open subgroup of the Neretin group
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/11/01
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Hiroki Ishikura (Univ. Tokyo)
Permutation stability of finitely generated free metabelian groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Hiroki Ishikura (Univ. Tokyo)
Permutation stability of finitely generated free metabelian groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/10/18
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Valerio Proietti (Univ. Tokyo)
A geometric Elliott invariant and noncommutative rigidity of mapping tori (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Valerio Proietti (Univ. Tokyo)
A geometric Elliott invariant and noncommutative rigidity of mapping tori (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/10/11
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Takuya Takeishi (Kyoto Inst. Tech.)
Constructing number field isomorphisms from *-isomorphisms of certain crossed product C*-algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Takuya Takeishi (Kyoto Inst. Tech.)
Constructing number field isomorphisms from *-isomorphisms of certain crossed product C*-algebras
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/09/20
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Robert Coquereaux (CNRS/CPT)
Honeycombs, polytopes, and representation theory (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Robert Coquereaux (CNRS/CPT)
Honeycombs, polytopes, and representation theory (English)
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/07/12
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Mao Hoshino (Univ. Tokyo)
Relative Drinfeld centers associated to monoidal functors
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Mao Hoshino (Univ. Tokyo)
Relative Drinfeld centers associated to monoidal functors
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/07/05
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Mizuki Oikawa (Univ. Tokyo)
Frobenius algebras associated with the $\alpha$-induction for twisted modules of conformal nets
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Mizuki Oikawa (Univ. Tokyo)
Frobenius algebras associated with the $\alpha$-induction for twisted modules of conformal nets
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
2022/06/07
16:45-18:15 Room #128 (Graduate School of Math. Sci. Bldg.)
Taro Sogabe (Univ. Tokyo)
Kirchberg algebras sharing the same homotopy groups of their automorphism groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
Taro Sogabe (Univ. Tokyo)
Kirchberg algebras sharing the same homotopy groups of their automorphism groups
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~yasuyuki/tokyo-seminar.htm
