Kilde: p.10 i Frank J. Swetz: The Sea Island Mathematical Manual: Surveyeing and Mathematics in Ancient China, Pennsylvania State University Press, 1992.
|
Kinesisk træsnitstryk, som illustrerer
situationen i opgave 1 - Øen i søen - i Hai Dao Suan Jing.
Stammer
fra encyklopædien Tu Shu Ji Cheng (1726).
Kilde: p.10 i Frank J. Swetz: The Sea Island Mathematical Manual: Surveyeing and Mathematics in Ancient China, Pennsylvania State University Press, 1992. |