Eudoxus of Cnidus

Eudoxus of Cnidus (; , Eúdoxos ho Knídios; 408–355 BC) was a Greek astronomer, mathematician, scholar and student of Plato. All of his works are lost, though some fragments are preserved in Hipparchus' commentary on Aratus's poem on astronomy. Theodosius of Bithynia's important work, Sphaerics, may be based on a work of Eudoxus.