Ando Yueki

A mathematician in the early Edo period. He studied mathematics under Shimada Sadatsugu and Imamura Chisho, and published "Tateiroku Kanasho" (1662), an explanation of Imamura's "Tateiroku" (1639). He also wrote "Kidokuhosu" (1697), which shows magic squares up to 30 squares, and many other works on calendars. He served Hoshina Masayuki, the lord of Aizu, and was involved in surveying Lake Inawashiro and Mount Iide. He served Hoshina not only because he was involved in surveying and accounting, but also in the calendar reform project. His salary was sometimes as low as 200 koku, and sometimes his family stipend was confiscated.

[Shimohira Kazuo]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

江戸初期の数学者。数学を島田貞継(さだつぐ)と今村知商(ちしょう)に習い、今村の『竪亥録(じゅがいろく)』（1639）を解説した『竪亥録仮名抄』（1662）を刊行する。三十方陣までの魔方陣(まほうじん)を示した『奇偶方数』（1697）や、多くの暦に関する著作がある。会津藩主の保科正之(ほしなまさゆき)に仕え、猪苗代(いなわしろ)湖や飯豊山(いいでさん)などの測量に従事した。保科に仕えたのは、測量や勘定方(かんじょうがた)に関係したためばかりでなく、改暦事業にも関係したためらしい。俸禄(ほうろく)は200石のときもあり、またときには家禄没収ということもあった。

［下平和夫］

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