Operator Theory, (Applied) Functional Analysis, Noncommutative Information Theory,
Graph Theory, Coding Theory, Cryptology, Computer Programming.
1980 assistant | Department of Mathematics, Osaka Kyoiku Univ. |
1988 lecturer | Department of Arts and Sciences, Osaka Kyoiku Univ. |
1995 assistant professor | Department of Arts and Sciences, Osaka Kyoiku Univ. |
2006 professor | Department of Arts and Sciences, Osaka Kyoiku Univ. |
| |
The editor of | Annals of Functional Analysis |
| Scientiae Mathematicae Japonicae |
| Journal of Mathematical Inequalities etc. |