- Professor at Research Institute for Mathematical Sciences (Kyoto), since 2013.
- Editorial Boards:

- 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.

- C*-algebras and finite-dimensional approximations (in collaboration
with N. P. Brown),

Graduate Studies in Mathematics, 88. American Mathematical Society, 2008, 509 pp.

- On injectivity and nuclearity for operator spaces (in collaboration
with Effros
and Ruan),

Duke Math. J., 110 (2001), 489--521. - Amenable actions and exactness for discrete groups,

C. R. Acad. Sci. Paris Ser. I Math., 330 (2000), 691--695. math.OA/0002185 - Homogeneity of the pure state space of
a separable
*C**-algebra (in collaboration with Kishimoto and Sakai),

Canad. Math. Bull., 46 (2003), 365--372. math.OA/0110152 - Solid von Neumann algebras,

Acta Math., 192 (2004), 111--117. math.OA/0302082 - Amenable Actions And Applications,

International Congress of Mathematicians, Vol. II, 1563--1580, Eur. Math. Soc., Zürich, 2006. - Weak amenability of hyperbolic groups,

Groups Geom. Dyn., 2 (2008), 271--280. arXiv:0704.1635 - On a class of II_1 factors with at most one Cartan subalgebra
(in collaboration with Popa),

Ann. of Math. (2), 172 (2010), 713--749. arXiv:0706.3623 - Examples of groups which are not weakly amenable,

Kyoto J. Math., 52 (2012), 333--344. arXiv:1012.0613

**Survey on the classification of von Neumann factors of type II**_{1}- Australian Mathematical Society 56th Annual Meeting, Ballarat, September 2012.
- SYM Lecture, University of Copenhagen, October 2012.
- Harmonic Analysis, Operator Algebras and Representations, CIRM, October 2012.

**Connes's Embedding Problem and its equivalent**(minicourse)- Masterclass on Sofic groups and applications to operator algebras, Copenhagen, November 2012. (6 hours)
- University of Tokyo, May 2013. (10 hours)
- Noncommutative Geometry and Applications, Poiana Braşov (România), September 2013. (4 hours)
- UCLA, October 2013. (4.5 hours)
- Colloquium at Seoul National University, October 2013.

**Quantum correlations and Tsirelson's problem**(Handout.pdf)- Séminaire de géométrie et dynamique, ENS Lyon, December 2012.
- AmenAbility, EPFL, December 2012.
- Kansai Seminar, February 2013.
- C*-Algebras and Noncommutative Dynamics, Sde Boker (Israel), March 2013.
- CRM Colloquium, Montréal, April 2013.
- Operator Spaces, Harmonic Analysis and Quantum Probability, ICMAT (Madrid), June 2013.
- PRIMA congress, Shanghai, June 2013.

**Fortifications of Kazhdan's property**(4-hour minicourse)- Rigidity School, University of Tokyo, January 2013.

**Analytic approximation properties for discrete groups**(6-hour minicourse, Handwritten Notes)- School on Group C*-algebras, Sde Boker (Israel), March 2013.

**Continuous bundles of tracial von Neumann algebras**- Workshop on Operator Algebras, University of Tokyo, May 2013.
- Von Neumann Algebras and Measurable Group Theory, KU Leuven, July 2013.
- Dynamics, Geometry, and Operator Algebras, Texas A&M University, August 2013.
- C*-Algebren, Oberwolfach, August 2013.

**An amenable operator algebra which is not a C*-algebra**- Operator Algebras and Operator Theory Seminar, Seoul National University, November 2013.

**Coarse geometry of discrete groups and applications**- Geometry of Moduli Space of Low Dimensional Manifolds, RIMS, November 2013. (2 hours)

**Noncommutative real algebraic geometry of Kazhdan's property (T)**- Séminaire Géométrie Topologie Dynamique, Orsay, February 2014.
- Séminaire Dynamique Mesurable, ENS Lyon, February 2014.
- Séminaire d'Algèbres d'Opérateurs, Paris 7, March 2014.
- Operator Algebras Seminar, Fields Institute, April 2014.
- Operator Algebra Seminar, University of Tokyo, April 2014.
- Colloquium, Kyoto University, July 2014.

**Approximation Properties for Group C*-Algebras**(minicourse)- Banach and Operator Algebras over Groups, Fields Institute, April 2014. (4 hours)

**Introduction to Noncommutative Real Algebraic Geometry**(minicourse)- Summer Camp on Operator Algebras, Otaru, July 2014. (6 hours)
- Hyperbolic Geometry and Geometric Group Theory, University of Tokyo, July 2014. (3 hours)

**Elementary amenable groups are quasidiagonal**(Handout.pdf)- Operator Algebras and Applications (ICM Satellite Conference), Cheongpung, August 2014.

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