1948 ............... born in Osaka City, Japan
1966-1970  undergraduate student majoring mathematics at Osaka City University
1970-1972  graduate student majoring mathematics at Osaka City University
1972 ............... Master of Science (Osaka City Univ.)
1972-1974  graduate student majoring mathematics at Kyoto University
since 1974  teaching at Ritsumeikan University
1989 ............... Doctor of Science (Kyoto Univ.)
since 1990  Professor of Ritsumeikan University
2013 .............. Retirement from Department of Mathematical Sciences
..........................Special Contract Professor of Ritsumeikan University

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My main subject on mathematics is
"Spectral Analysis of Differential Operators,"
especially, Dirac operators and Schroedinger operators,
which appear in Quantum Mechanics.
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