email : my last name at ie.niigata-u.ac.jp

I am interested in operator algebras([1 - 6, 8, 10]),

discrete groups([1, 2, 9, 10]),

metric spaces([4-6, 8 - 10]),

probability measures and orthogonal polynomials([7, 11]).

[11] H. Saigo and H. Sako,
The Arcsine law and an asymptotic behavior of orthogonal polynomials,

preprint
arXiv:1407.0792

abstract

[10]
M. Mimura,
N. Ozawa,
H. Sako,
and Y. Suzuki, Group approximation in Cayley topology and coarse geometry,
Part III: Geometric property (T),

Algebreaic and Geometric Topology,
15 (2015), no.2, 1067--1091,
arxiv:1402.5105

abstract

[9] M. Mimura and
H. Sako, Group approximation in Cayley topology and coarse geometry,
Part I: Coarse embeddings of amenable groups,

preprint
arxiv:1310.4736

abstract

[8] H. Sako, Property A for coarse spaces,

preprint
arXiv:1303.7027

abstract

[7] H. Saigo and H. Sako, Indeterminacy of the moment problem for Symmetric probability measures,

preprint
arXiv:1302.0382

abstract

[6] H. Sako, Translation C^*-algebras and
property A for uniformly locally finite spaces,

preprint
arXiv:1212.5900.

abstract

[5] H. Sako, A generalization of expander graphs and local reflexivity of uniform Roe algebras,

J. Funct. Anal.,
265 (2013), no. 7, 1367--1391,
arXiv:1208.5642.

abstract

[4] H. Sako, Property A and the operator norm localization property for discrete metric spaces,

J. Reine Angew. Math.,
690 (2014), 207--216,
arXiv:1203.5496.

abstract

[3] Hiroki Sako, Concrete Classification and Centralizers of Certain (Z^2 \rtimes SL(2, Z))-actions,

J. Math. Soc. Japan,
62 (2010), no.1, 135--166,
arXiv:0704.1533.

abstract

[2] Hiroki Sako, Measure Equivalence Rigidity and Bi-exactness of Groups,

J. Funct. Anal.,
257 (2009), 3167--3202,
arXiv:0901.3376.

abstract

[1] Hiroki Sako, The class S as an ME invariant,

Internat. Math. Res. Notices,
2009, 2749--2759,
arXiv:0901.3374.

abstract

Born: October 5, 1982

Education:

April 2001 - March 2005 (Undergraduate), University of Tokyo

April 2005 - March 2007 (Master course), Graduate school of
Mathematical Sciences, University of Tokyo

April 2007 - March 2009, Department of Mathematics, University of
California Los Angeles (Adviser: Sorin Popa)

April 2007 - March 2010 (Doctoral course), Graduate school of
Mathematical Sciences, University of Tokyo (Adviser: Yasuyuki
Kawahigashi)

Degree:

March 2005, B.Sc., University of Tokyo

March 2007, Master, Graduate School of Mathematical Sciences, University of Tokyo

March 2010, Doctor, Graduate School of Mathematical Sciences, University of Tokyo

Fellowship:

April 2007--March 2010, Research Fellowship of the Japan Society for the Promotion of
Science for Young Scientists (DC1)

April 2010--March 2013, Research Fellow of the Japan Society for the Promotion of Science (PD)

Job:

April 2013-- August 2014, Lecturer, Tokai University, School of Science

September 2014 -- , Associate Professor, Niigata University

Citizenship: Japan

Slide for the conference ``Metric geometry and analysis'' in Kyoto University

December 10, 2013

The slide does not include joint works with Masato Mimura.

Back to Hiroki's page/ Research activity | Research activity (in Japanese)