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also known as Aida Ammei, was a Japanese mathematician in the Edo period.〔Smith, David. (1914). 〕 He made significant contributions to the fields of number theory and geometry, and furthered methods for simplifying continued fractions. Aida created an original symbol for "equal". This was the first appearance of the notation for equal in East Asia.〔Jochi, Shigeru. (1997). 〕 ==Selected works== In a statistical overview derived from writings by and about Aida Yasuaki, OCLC/WorldCat encompasses roughly 50 works in 50+ publications in 1 language and 50+ library holdings.〔( WorldCat Identities ): ( 会田安明 1747–1817 )〕 *1784 — (OCLC 22057343766 ) *1785 — (OCLC 22049703851 ), ''Counter-arguments with seiyo sampō''〔 *1787 — (OCLC 22056510030 ), ''Counter-arguments with seiyo sampō, new edition''〔 *1788 — (OCLC 22056510044 )〔 *1797 — (OCLC 22057185824 )〔 *1801 — (OCLC 22057185770 )〔 * 1811 — 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yasuaki Aida」の詳細全文を読む スポンサード リンク
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