Profile An associate professor at Department of Mathematics at Keio University, and at the same time a helper at Enomoto Lab. He considers himself as a mathematician, but is not confident. The famous senior mathematician Makoto Matsumoto, who majors Finsler geometry, is another person, but in MathReview there is a confusion. During the visit in MPI for Mathematics in Bonn, he was helped by so many researchers, and he is very thankful for their hospitality.
Weak side is analysis.
Arithmetic fundamental groups, mapping class groups, combinatorics, pseudorandom number generation, computer science, etc. are his research areas. A dream To be a mathematician. But it seems hard. An R-rated profile.