Choi Seok-jeong

Choi Seok-jeong (Korean: 최석정; Hanja: 崔錫鼎; 1646–1715) was a Korean politician and mathematician in the Joseon period of Korea. He published the Gusuryak (Korean: 구수략; Hanja: 九數略) in 1700,[1] which is the first literature on the Latin square,[2] predating Leonhard Euler by at least 67 years.[3][4] He also invented the hexagonal tortoise problem.[5]

This is a Korean name; the family name is Choi.
Gusuryak by Choi Seok-jeong, published in 1700

References
  1. "구수략(九數略)". 규장각 문화재청. Seoul National University Kyujanggak Institute for Korean Studies. Retrieved 11 April 2017.
  2. Colbourn, Charles J.; Dinitz, Jeffrey H. Handbook of Combinatorial Designs, Second Edition. CRC Press. p. 12. ISBN 9781420010541. Retrieved 28 March 2017.
  3. Ree, Sangwook (August 15, 2014). "Confucian scholar's discovery predates the work of Euler" (PDF). Math&Presso. Vol. 3. International Congress of Mathematicians.
  4. Kim, Sung Sook (2012). Orthogonal Latin Squares of Choi Seok-Jeong (PDF). History and Pedagogy of Mathematics. Archived from the original (PDF) on 5 April 2017. Retrieved 28 March 2017.
  5. Proceedings of the Genetic and Evolutionary Computation Conference. Morgan Kaufmann Publishers. p. 689. Retrieved 28 March 2017.


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