塵じん劫こう記き

noun

Jinkōki (1627 Japanese mathematics text)

A famous Edo-period mathematics book by Yoshida Kōyū, widely used for practical arithmetic and often referenced in historical contexts.

• 塵じん劫こう記きは江え戸ど時じ代だいの数すう学がく書しょとして知しられている。

  Jinkōki is known as a mathematics book from the Edo period.