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A sangaku dedicated to Konnoh Hachimangu (Shibuya, Tokyo) in 1859.Sangaku or san gaku (Japanese: 算額, lit. 'calculation tablet') are Japanese geometrical problems or theorems on wooden tablets which were placed as offerings at Shinto shrines or Buddhist temples during the Edo period by members of all social classes.
Japanese mathematics (和算, wasan) denotes a distinct kind of mathematics which was developed in Japan during the Edo period (1603–1867). The term wasan , from wa ("Japanese") and san ("calculation"), was coined in the 1870s [ 1 ] and employed to distinguish native Japanese mathematical theory from Western mathematics (洋算 yōsan ).
The Chisanbop system. When a finger is touching the table, it contributes its corresponding number to a total. Chisanbop or chisenbop (from Korean chi (ji) finger + sanpŏp (sanbeop) calculation [1] 지산법/指算法), sometimes called Fingermath, [2] is a finger counting method used to perform basic mathematical operations.
Jinkōki Section from the Jinkōki Editor Yoshida Mitsuyoshi Original title 塵劫記 Language Japanese Publication date 1627 Publication place Japan Jinkōki (塵劫記, じんこうき, Permanent Mathematics) is a three-volume work on Japanese mathematics, first edited and published by Yoshida Mitsuyoshi in 1627. Over his lifetime, Mitsuyoshi revised Jinkōki several times. The edition ...
Pages in category "Japanese mathematics" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. ...
A suanpan (top) and a soroban (bottom). The two abaci seen here are of standard size and have thirteen rods each. Another variant of soroban. The soroban is composed of an odd number of columns or rods, each having beads: one separate bead having a value of five, called go-dama (五玉, ごだま, "five-bead") and four beads each having a value of one, called ichi-dama (一玉, いちだま ...
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The base unit of Japanese mass is the kan, although the momme is more common. It is a recognised unit in the international pearl industry. [22] In English-speaking countries, momme is typically abbreviated as mo. The Japanese form of the Chinese tael was the ryō (両).