4th Laboratory,
Department of Mathematical Informatics,
Graduate School of Information Science and Technology,
The University of Tokyo, Japan.

NEWS

2020.09.16
A research paper is accepted for publication (joint work with M. Härkönen and Y. Hirose
2020.02.22
A research paper is published online (joint work with M. Ogawa and K. Nakamoto).
2019.11.05
Errata to Sei and Kume (2015) is uploaded.