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Medieval Islamic Designs Reveal Math Breakthrough 3 (of 5)

Caption: Archway from the Darb-i Imam shrine, Isfahan, Iran (1453 C.E.), with two overlapping girih patterns. This image relates to an article titled "Decagonal and Quasi-Crystalline Tilings in Medieval Islamic Architecture" that appeared in the Feb. 23, 2007, issue of the journal Science, published by AAAS. The study was conducted by Dr. Peter Lu and colleagues of Harvard University in Cambridge, Mass.

Credit: Photo provided by K. Dudley and M. Elliff via Science-AAAS.

Usage Restrictions: Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission.