- Born in Yokohama in 1974.
- Professor at Research Institute for Mathematical Sciences (Kyoto), since 2013.
- Editorial Boards:
- Groups, Geometry, and Dynamics, 2011--present.
- Journal of the Mathematical Society of Japan, 2012--18.
- Publications of the Research Institute for Mathematical Sciences, 2013--present.

- Ph.D., Mathematics,
University of Tokyo, March 2000.
- Adviser: Prof. Y. Kawahigashi

- Ph.D., Mathematics,
Texas A&M University, May 2001.
- Advisers: Prof. W.B. Johnson and Prof. G. Pisier

- Guseman Prize in Mathematics (for graduate students, Texas A&M University), 2000.
- ICM Invited Speaker (Operator Algebras and Functional Analysis), Madrid, 2006. (Daily News)
- Operator Algebra Prize of Japan, 2008.
- Spring Prize (for those under 40, Math. Soc. Japan), 2009.
- JSPS Prize (for young researchers, JSPS), 2010.
- Awards for Science and Technology (MEXT), 2021.

- Operator algebra theory: Working on both C*-algebras and von Neumann algebras, particularly in connection with group theory.
- Functional analytic group theory: Studying various aspects of groups by functional analysis methods.
- Quantum information theory: Hanging about Tsirelson's conjecture ( = Kirchberg's conjecture = Connes's embedding conjecture).

**Amenability for C*-dynamical systems**(slides.pdf)- North British Functional Analysis Seminar, Glasgow (online), November 2021.
- Operator algebras and Group Dynamics, CIRM, May 2022.

**Product Replacement Algorithm, Semidefinite Programming, and Operator Algebras**- iTHEMS Math Seminar, RIKEN, August 2022.

**A substitute for Kazhdan's property (T) for universal non-lattices**- C*-algebras, MFO, August 2022.
- Measured Group Theory, CRM, March 2023.

**Kazhdan's property (T) for Aut(F_n) and EL_n(R)**(slides.pdf)- Mathematical Picture Language Seminar, Harvard, October 2022.
- Kyoto Operator Algebra Seminar, Kyoto, October 2022.
- PRIMA Congress 2022 (plenary talk), Vancouver, December 2022.
- Modern Trends in Operator Algebras Conference (Effros Memorial), UCLA, March 2023.
- Operator Algebras and Mathematical Physics (Yasu Festa), July 2023.

**Amenability for unitary groups of C*-algebras**- C*-Algebras: Tensor Products, Approximation & Classification (Kirchberg Memorial), WWU Münster, July 2023.
- Workshop on Operator Algebras and Applications: Groups and Group Actions, Fields Institute, October 2023.

**Sum of squares methods for operator algebras**- YMC*A (4-hour minicourse), KU Leuven, August 2023.

**Embeddings of matrix algebras into uniform Roe algebras and quasi-local algebras**- Kyoto Operator Algebra Seminar, Kyoto University, November 2023.
- Semigroups, groupoids and C*-algebras, KIAS (Seoul), July 2024.

Back to the main Index.