Architect, engineer, and probably the most fun math teacher in the Eastern Roman Empire. Anthemius of Tralles (c. 474–before 558 CE) co-designed Hagia Sophia and wrote treatises where geometry and pyrotechnics casually shared the page. He played with parabolas, optics, and steam explosions like a Byzantine Da Vinci. Not just a builder of cathedrals — a builder of ideas. If math could launch a dome into heaven, Anthemius had the blueprint.