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Orthogonal Latin squares of Choi Seok-Jeong  

Kim, Sung-Sook (Department of Applied Mathematics, Paichai University)
Khang, Mee-Kyung (Department of Applied Mathematics, Paichai University)
Publication Information
Journal for History of Mathematics / v.23, no.3, 2010 , pp. 21-31 More about this Journal
Abstract
A latin square of order n is an $n{\times}n$ array with entries from a set of n numbers arrange in such a way that each number occurs exactly once in each row and exactly once in each column. Two latin squares of the same order are orthogonal latin square if the two latin squares are superimposed, then the $n^2$ cells contain each pair consisting of a number from the first square and a number from the second. In Europe, Orthogonal Latin squares are the mathematical concepts attributed to Euler. However, an Euler square of order nine was already in existence prior to Euler in Korea. It appeared in the monograph Koo-Soo-Ryak written by Choi Seok-Jeong(1646-1715). He construct a magic square by using two orthogonal latin squares for the first time in the world. In this paper, we explain Choi' s orthogonal latin squares and the history of the Orthogonal Latin squares.
Keywords
Choi Seok-Jeong; Kusuryac; Orthogonal Latin squares; magic square;
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Times Cited By KSCI : 1  (Citation Analysis)
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