c. 480-c. 540

Byzantine Middle Eastern scholar whose writings on the history of mathematics constitute valuable sources of information. Eutocius wrote commentaries on Archimedes' (c. 287-212 B.C.) Measurement of the Circle, On the Sphere and Cylinder, and On Plane Equilibria, as well as the first four books of the Conics by Apollonius of Perga (c. 262-c. 190 B.C.). It is thanks to Eutocius that modern historians know about solutions to the problem of duplicating the cube by a number of thinkers, as well as a wide variety of other material that would otherwise have been lost.