Mathematician:Eratosthenes of Cyrene

Ancient Greek: Ἐρατοσθένης.

Greek geometer and astronomer best known for his estimate of the size of the Earth.

Also famous for his Sieve of Eratosthenes.

Nationality
Greek

History

 * Born: c. 276 B.C.E., Cyrene, North Africa (now Shahhat, Libya)
 * Died: c. 194 B.C.E., Alexandria, Egypt

Theorems and Topics

 * Sieve of Eratosthenes

Books and Papers

 * Platonicus (on the philosophy of Plato)
 * Hermes

Other works
These works are referred to by other ancient writers, but are now believed lost:
 * On the measurement of the Earth
 * On means (now lost: recognised by Pappus as one of the great works of geometry)