Welcome to the official site of Yasuhiko Tanaka!
We have two areas concerning mathematics, a lectures area and a research area.
In the lectures area, we can obtain various resources, which cover the mathematics lectures for undergraduate students in the Engineering Department of Oita University. This area is mainly dedicated to self-studying students.
In the mathematical research area, there are some descriptions and links on the theory of finite groups, which is a main subject of interest to myself.
Sorry in advance for insufficient information and late updating.