Pythagoras

By Juan Tutasi

Pythagoras of Samos was an Ionian Greek philosopher, mathematician, and founder of the religious movement called Pythagoreanism. 
Most of the information about Pythagoras was written down centuries after he lived, so very little reliable information is known about him. He was born on the island of Samos, and might have travelled in his youth, visiting Egypt and other places looking for knowledge.
Pythagoras made influential contributions to philosophy and religious teaching in the late 6th century BC. He is often named as a great mathematician, mystic and scientist, but he is best known for the Pythagorean theorem which carries his name.
Many of the accomplishments credited to Pythagoras may actually have been accomplishments of pythagorichs.
It was said that he was the first man to call himself a philosopher, or lover of mathemathics, and Pythagorean ideas exercised a marked influence on Plato, and through him, all of Western philosophy. Many mathematical and scientific discoveries were atributed to Pythagoras, including his famous theorem, as well as discoveries in the field of music, astronomy, and medicine.But it was the religious element which made the profoundest impression upon his contemporaries. 
His followers established a select brotherhood or club for doing mathematics. All that was done there, the members kept it in secret. The death and his age of death is unknow, but we know that he is buried in a cave of Samos.



Pythagorean theorem

Since the fourth century AC, Pythagoras has been given credit for discovering the Pythagorean theorem, a theorem in geometry that states that in a rectangle triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides—that is,

a^2 + b^2 = c^2

. This theorem is very important because, with it you can do many calculations.