Born: about 569 BC in Samos, Ionia
Died: about 475 BC
He is named the first mathematician.
Pythagoras was born near the Ionian coast of the Mediterranean, in the rich merchant family.
After living in Egypt for 22 years and in Babylon for 12 years, he gained deep knowledge in natural and mathematical sciences.
He gathered around a group of like-minded people, mostly aristocrats, and created a secret circle.
The members of the circle studied various issues of philosophy and mathematics.
Based on their ideas, the Pythagoreans conducted research work in mathematics. They combine numbers and, giving them a mystical meaning, divide them into numbers of good - odd numbers; evil numbers: perfect - each of them equal to the sum of their divisors