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Allmath.com: Magic Squares Game
Magic squares have been a fascinating topic in mathematics for centuries. They are formed by filling in all the squares with the numbers starting from one so that the sum of all rows, columns, and diagonals is the same. Instructions are...
University of St. Andrews (UK)
University of St. Andrews: Takakazu Seki Kowa
The University of St. Andrews offers this biography of Takakazu Seki Kowa. Many interesting links are provided.
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Wichita State University: Takakazu Seki Kowa (1642 1708)
This site provides a general biography of Takakazu Seki Kowa, "the arithmetical sage." Content focuses on his known accomplishments. Also includes related links.