Pythagoras

I want to tell about Pythagoras and his contributions.

Pythagoras is a mathematician and philosopher of Yunani who the most famous with his theorem.

Known as “Father of Number”, he gave the important contribution into mathematic and philosophy in the last 6^th century BC.

His life and his teaching were not clearly because many false stories about himself.

Pythagoras was born about 572 BC in Samos Island, but then leave his hometown and go to Crotona in South Italia. In there, he established a school or Pythagoras teaching, which is an academy to study the philosophy of mathematic and science. According to a note, Pythagoras might died because had been killed in old age between 75 up to 80.

Pythagoras group considered that every mathematic finding as together fortune, although must to keep it secretly from foreign person.

The teaching of Pythagoras have an oral character, and because this group usually for return all finding to the establisher (Pythagoras), so it is difficult to know which is mathemathic finding by Pythagoras own or others in this group.

-Pythagoras arithmetica

Once upon a time, Iamblicus, the Neoplatonis philosopher that influence about 320 BC, appointed Pythagoras as founder of friendly numbers or amicable numbers.

-Theorem of Pythagoras

One of Pythagoras contribution that well-known is Pythagoras theorem, said that hipotenusa quadratic from right triangle is same with the sum quadrate of foots.

Although the fact in this theorem was knew before Pythagoras born, like people of Babilonia at Hamurabi period was knew 1000 years ago, but this theorem given to Pythagoras. This case because he is the best and the first that could prove this theorem mathematically.