塵じん劫こう記きじんこうきじ字FuriganaMeanings1nounJinkōki (1627 Japanese mathematics text)work of art, literature, music, etc.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
