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searching for Jade Mirror of the Four Unknowns 1 found (9 total)

alternate case: jade Mirror of the Four Unknowns

Yang Hui (729 words) [view diff] exact match in snippet view article find links to article

coefficients). It appeared again in a publication of Zhu Shijie's book Jade Mirror of the Four Unknowns (四元玉鑒) of 1303 AD. Around 1275 AD, Yang finally had two published