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Aida Yasuaki (Aida Ammei)
1747 - Aida was born in Yamagata, Japan on February 10, 1747.
1762 - Studied at the school under the mathematician Yasuyuli Okazaki in Yamagata.
1770 - Worked as a civil engineer working on river control and irrigation systems around Tokyo.
1788 - Aida compiled Sampo tensi shinan and published it the same year.
1817 - Died in Tokyo, Japan on October 26, 1817.
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