Apr. 1996 - Mar. 2002, Graduate School of Mathematical Sciences, University of Tokyo.
Mar. 29, 2002, Ph.D. (Mathematical Science), Thesis entitled "Iwasawa theory for elliptic curves at supersingular primes", prepared under the supervision of Prof. Takeshi Saito.
Apr. 2002-Mar.2003, part-time lecturer at Tokyo Institute of Technology.
Apr. 2003 - May. 2003, a member of Research Fellowships of Japan Society for the Promotion of Science for Young Students (PD).
May. 2003-, Research Associate at Nagoya University