Isidore of Miletus was one of the two main Byzantine Greek mathematician, physicist and architects that Emperor Justinian I commissioned to design the cathedral Hagia Sophia in Constantinople from 532 to 537. He was born c. 475 AD. The creation of an important compilation of Archimedes' works has been attributed to him. The spurious Book XV from Euclid's Elements has been partly attributed to Isidore of Miletus.
Roof figure by Ludwig Simek at the Kunsthistorisches Museum, Vienna (Museumsstraße)
The vaults in the Hagia Sophia, originally designed by Isidore of Miletus.
Exterior of the Hagia Sophia, 2013
Interior panorama of the Hagia Sophia, the patriarchal basilica designed by Isidore. The influence of Archimedes' solid geometry works, which Isidore was the first to compile, is evident (annotated image).
Anthemius of Tralles was a Byzantine Greek from Tralles who worked as a geometer and architect in Constantinople, the capital of the Byzantine Empire. With Isidore of Miletus, he designed the Hagia Sophia for Justinian I.
Fragment of a Greek work by Anthemius on Paradoxes of mechanics (Fragment d'un ouvrage grec d'Anthèmius sur des Paradoxes de mècanique), 1777
Exterior of the Hagia Sophia, 2013