Mathematician:Pythagoras of Samos

Mathematician
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. May have introduced the concept of structuring the study of geometry into a system of definitions, axioms, theorems and proofs.

Supposedly discovered the result: Sum of Angles of Triangle equals Two Right Angles, but there is a plausible case for suggesting that had discovered it previously, and passed it on via his teachings.

Legend has it that on discovering what is now known as Pythagoras's Theorem, he sacrificed an ox to give thanks to the deities, but this is unlikely given his vegetarian philosophical stance.

Investigated the mathematics of musical harmony. As a consequence, posited the idea of the "music of the spheres" from the supposition that each of the planets produced a sound proportional to its speed of movement through the sky.

Possibly the first to assert that the earth is spherical.

Nationality
Greek

History

 * Born: between 580 and 572 BCE, Samos, Ionia
 * Died: between 500 and 490 BCE

Theorems and Definitions

 * Pythagorean Equation
 * Pythagorean Triple
 * Pythagoras's Constant: $\sqrt 2$
 * Pythagoras's Theorem, documented as Proposition 47 of Book I in
 * Has also been credited with Proposition 44 of Book I in.
 * Pythagoreans

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