title: Xu Yue (mathematician)
text: # Xu Yue (mathematician)
  
  Xu Yue was a second-century mathematician, born in Donglai, in present-day Shandong province, China. Little is known of his life except that he was a student of Liu Hong, an astronomer and mathematician in second century China, and had frequent discussions with the Astronomer-Royal of the Astronomical Bureau.
  
  ## Works
  
  Xu Yue wrote a commentary on Nine Chapters on Mathematical Art and a treatise, Notes on Traditions of Arithmetic Methods. The commentary has been lost but his own work has survived with a commentary from Zhen Luan.
  
  Notes on Traditions of Arithmetic Methods mentions 14 old methods of calculation. This book was a prescribed mathematical text for the Imperial examinations in 656 and became one of The Ten Mathematical Classics (算经十书) in 1084.
  
  