拉普拉斯小妖 2020-02-12 14:20:18

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简介：Now Fukagawa Hidetoshi, a mathematics teacher, and
writer Tony Rothman present a collection of Sangaku problems in their
book, Sacred Mathematics. The puzzles range from simple algebra within
the grasp of any intermediate-school student, to challenging problems
that require graduate-school mathematics to solve. Copious illustrations
and many detailed solutions show the scope, complexity, and beauty of
what was tackled in Japan during the Tokugawa shogunate.