Mathematician:Pythagoras of Samos

Greek philosopher whose contributions to mathematics were perhaps more limited than is generally believed.

Best known for being said to have provided the first known proof of Pythagoras's Theorem (or one of his students did) which had probably been known to the ancient Egyptians.

Nationality
Greek

History

 * Born: between 580 and 572 B.C.E.
 * Died: between 500 and 490 B.C.E.

Theorems and Definitions

 * Pythagoras's Theorem.

This can be found in "The Elements" by Euclid.

Writings
No writings of his survive, although many forgeries have circulated.