Abstract

This article concerns the exact sciences in Byzantium, namely the four traditional sciences that were usually designated in the Middle Ages by the term quadrivium : arithmetic, astonomy, geometry and music. It offers a review of the Byzantine texts and documents preserved in these domains from the sixth century to the Fall of Constantinople. The article presents the leading trends : continuation of Hellenistic Greek science, Islamic Jewish or Latin influences, in practical or scholarly directions, as well as the great historical changes that mark the stages of scientific knowledge. The ancillary sciences, geography, optics and mechanics, as well as astrology, are briefly sketched