This New York Times article reports the discovery of aperiodic tiling in medieval Islamic art. These designs were not understood by Western mathematicians until the 1970s. The article includes pictures of the tilings and a link to the original research paper.
New York Times Company. In Medieval Architecture, Signs of Advanced Math. New York: New York Times Company, November 14, 2008. http://www.nytimes.com/2007/02/27/science/27math.html (accessed 20 February 2017).
%0 Electronic Source %D November 14, 2008 %T In Medieval Architecture, Signs of Advanced Math %I New York Times Company %V 2017 %N 20 February 2017 %8 November 14, 2008 %9 text/html %U http://www.nytimes.com/2007/02/27/science/27math.html
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