Ancient world map 10,000 bc

Eratosthenes
Mathematician
Born	276 BC Cyrene
Died	194 BC Alexandria
Nationality	Greek

Eratosthenes was a mathematician from ancient Greece.

He was also active in the fields of astronomy, geography, music, and poetry. Eratosthenes spent most of his career at the world-renowned Library of Alexandria.

Imago mundi

Old map of the world with countries

Oldest map of the world

First map of the world was made by

Flat oldest world map

His best known mathematical accomplishment was the first accurate calculation of the Earth’s circumference. He produced an improved map of the world, as well as developed a method for discovering prime numbers, known today as the Sieve of Eratosthenes.

Early Years of Eratosthenes

---

Only fragmentary evidence has survived about the life of Eratosthenes, but it is generally accepted that he was born in the city of Cyrene, in Libya, in about 276 B.C.

His father, Aglaus, encouraged him to study in Alexandria, which at that time was the greatest center of learning in North Africa.

He was taught by the great grammar tutor, Callimachus, and began to learn phil