Anthemius of Tralles
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Anthemius of Tralles (born about 474, died about 534) was professor of geometry at Constantinople and architect with Isidore of Miletus of Hagia Sophia. Anthemius had previously written a book on conic sections, excellent preparation for designing the elaborate vaulting of Hagia Sophia.

The original article can be found at: http://en.wikipedia.org/wiki/Anthemius_of_Tralles.
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