Liu, Hui, active 3rd century-4th century <br/><br/>
海島算經 
 Hai Dao Suan Jing 

 - 1 online resource :  multiple file formats 
<br/><br/> Wikipedia page about this book: https://en.wikipedia.org/wiki/Haidao_Suanjing  Release date is 2008-10-20 
<br/><br/>Produced by Yvonne  Produced by Yvonne 
<br/><br/> "海島算經" by Liu Hui is a mathematical manual written during the Three Kingdoms era (220–280). Originally an extension of "The Nine Chapters on the Mathematical Art," it became a separate work during the Tang dynasty and was included in imperial mathematics examinations. The text presents practical surveying problems, demonstrating how to measure inaccessible distances and heights using poles and geometric principles. Nine problems cover scenarios like determining island heights, mountain elevations, and city dimensions through ingenious indirect measurement techniques. (This is an automatically generated summary.) 
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<br/><br/><label>Subjects--Index Terms: </label>Arithmetic -- Early works to 1900 
<br/><br/><label>LC Class. No.: </label>AC  QA