Gou Gu Shu in the 19th century Chosun

19세기(世紀) 조선(朝鮮)의 구고술(句股術)

  • Hong, Sung-Sa (Department of Mathematics, Sogang University) ;
  • Hong, Young-Hee (Department of Mathematics, Sookmyung Women's University) ;
  • Kim, Chang-Il (Department of Mathematical Education, Dankook University)
  • Published : 2008.05.31


As a sequel to the previous paper Gou Gu Shu in the 18th century Chosun, we study the development of Chosun mathematics by investigating that of Gou Gu Shu in the 19th century. We investigate Gou Gu Shu obtained by Hong Gil Ju, Nam Byung Gil, Lee Sang Hyuk and Cho Hee Soon among others and find some characters of the 19th century Gou Gu Shu in Chosun.