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Other Interests:

History of Japanese and Chinese mathematics, wasan, sangaku, ethnomathematics

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Recent conferences (talks and abstracts)

- On a sangaku of Mie prefecture, Scientific Session on Early Modern Mathematics (SS1), XXII International Congress of History of Science,
Beijing, China, July 24-30, 2005.
- Votive mathematical tablets in Edo Japan, Abstract, Third International Conference on Ethnomathematics, Auckland, New Zealand, February 12-16, 2006.
- Sangaku: a mathematical tradition in Edo Japan,
Colloquium, Bowdoin College, Brunswick, Maine, October 23, 2008.
- "On a sangaku problem of Hirohata shrine in Mie prefecture", Colloquium, Math. Dept., Naruto Univ., Naruto, Japan, June 30, 2009.
- "What did Yamaguchi Kazu do during his second trip to the Northeast?", Colloquium, Math. Dept., Yamaguchi Univ., Yamaguchi, Japan, July 2, 2009.
- "On a sangaku from Mie prefecture", Mathematics Department, Kyushu Univ., Fukuoka, Japan, July 3, 2009.
- "What is sangaku?", Arts and Mathematics,
MAA Contributed Paper Session, Joint Mathematics Meetings, San Francisco, California, January 13-16, 2010.
- Japanese Temple Geometry - the tradition of sangaku in Edo Japan,
Colloquium, Colby College, Waterville, Maine, November 15, 2010.
- Sangaku in Edo Japan (subtitle: What did Yamaguchi Kazu do during his second trip to the Northeast?), history of mathematics seminar, Dept. Mathematics, UNESP-Rio Claro, Rio Claro, São Paulo, Brazil, May 27, 2014.
- Sangaku - a mathematical tradition in Edo Japan, colloquium, Dept. Mathematics, Federal University of São Carlos, São Carlos, São Paulo, Brazil, June 11, 2014.