A Yokohon typeset book of unknown author. It was published in 1628, the year after the publication of Jinkoki written by Yoshida Mitsuyoshi, and is one of the mathematics books from the early period of the revival of Japanese mathematics. It had not appeared in any previous literature, and was first introduced by Oya Shinichi (1943). The first part is said to be based on Mori Shigeyoshi's Warizansho, and the last part is an excerpt from Jinkoki. There is another book, Sanyoki, which is mentioned in Warizansho published in 1622. It is older than Warizansho and Shokanbunmono (22), and can be said to be the oldest Japanese mathematics book currently confirmed. The year of the creation of this book, which explains the mathematics of everyday life at that time, is unknown, but Hirayama Taira believes it was around the middle of the Keicho era (around 1610). Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
著者不詳の横本活字本。吉田光由が書いた『塵劫記』が出た翌年の寛永5 (1628) 年に刊行された,和算再興初期の数学書の一つである。従来の文献には出ていなかったもので,大矢真一によって初めて紹介された (1943) 。初めの部分は毛利重能の『割算書』により,終りの部分は『塵劫記』によって編んだ抜粋による算書とされている。これとは別の『算用記』があり,これは元和8 (1622) 年刊の『割算書』で言及された算書である。『割算書』『諸勘分物』 (22) の刊行よりも古く,現在確認されている最古の和算書といえるものである。この,当時の日常の数学を説いた算書の成立年は不詳であるが,平山諦は慶長年間の中頃 (1610年頃) とする。
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