# Pythagoras (581-497 B.C.)

Greek philosopher and mathematician; held that numbers were basic to matter; the Pythagorean Theorem is named for his geometric formulation; developed atomic theory; students of his philosophy emphasized geometrical form as a basic property of atoms; developed mathematical relationships which led to musical harmony.

**530BC**Devised Pythagoras′ theorem.

**See also: **Pythagoras Theorem, Pythagorean Triangle, Pythagorean Triple.

**Subjects: ** Famous Scientists & Engineers Mathematics Physics