Koemon Imanishi

Japanese: 今西小右衛門 - いまにしこうえもん
Koemon Imanishi

…Many mathematical tablets were already dedicated in the early Edo period. The oldest surviving mathematical tablet is the one donated by Murayama Yoshishige to Hoshimiya Shrine in Sano City, Tochigi Prefecture in 1683 (Tenwa 3), followed by Kitano Tenmangu Shrine in Kyoto (1686 (Jokyo 3), Imanishi Koemon), Yasaka Shrine in Kyoto (1691 (Genroku 4), Hasegawa Rinkan), and Oshio Hachiman Shrine in Takefu City, Fukui Prefecture (1701, Hachiya Yoriya). Some of these tablets contained good problems, and some people began to copy and collect them to make a book. …

*Some of the terminology that refers to "Imanishi Koemon" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…江戸初期にはすでに多くの算額が奉納されていた。現存最古の算額は栃木県佐野市の星宮神社に村山吉重が奉納した1683年(天和3)の額で,続いて京都の北野天満宮(1686年(貞享3),今西小右衛門),京都の八坂神社(1691年(元禄4),長谷川鄰完),福井県武生市の大塩八幡宮(1701年,蜂屋頼哉)と続く。これらの額の中にはよい問題もあり,これを写し集めて本にしようという者も現れた。…

※「今西小右衛門」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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